Огромная разница по времени выполнения запроса / PostgreSQL

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Огромная разница по времени выполнения запроса

#38796547

sabbath66

Гость

Доброго дня всем,

Помогите, пожалуйста, разобраться. При примерно одинаковом количестве строк на выводе, при разных входящих данных один и тот-же запрос выполняется либо 1-2 секунды, либо 25 МИНУТ! Меняется только WHERE LA_ART_ID = 1359385 на 1359418. В одиночные кавычки ставить пробовал, таблицы проиндексированы. Заранее огромное спасибо. Вот сам запрос:

SELECT TYP_ID, MFA_BRAND, DES_TEXTS7.TEX_TEXT AS MOD_CDS_TEXT,
TOF_DES_TEXTS.TEX_TEXT AS TYP_CDS_TEXT, TYP_PCON_START, TYP_PCON_END,
TYP_CCM, TYP_KW_FROM, TYP_KW_UPTO, TYP_HP_FROM, TYP_HP_UPTO,
TYP_CYLINDERS, string_agg(TOF_ENGINES.ENG_CODE, ', '),
DES_TEXTS2.TEX_TEXT AS TYP_ENGINE_DES_TEXT,
DES_TEXTS3.TEX_TEXT AS TYP_FUEL_DES_TEXT,
CASE WHEN DES_TEXTS4.TEX_TEXT IS NULL THEN DES_TEXTS5.TEX_TEXT ELSE DES_TEXTS4.TEX_TEXT END AS TYP_BODY_DES_TEXT,
DES_TEXTS6.TEX_TEXT AS TYP_AXLE_DES_TEXT, TYP_MAX_WEIGHT

FROM TOF_LINK_ART

INNER JOIN TOF_LINK_LA_TYP ON LAT_LA_ID = LA_ID AND SUBSTRING(lat_ctm FROM 249 FOR 1)='1'
INNER JOIN TOF_TYPES ON TYP_ID = LAT_TYP_ID AND SUBSTRING(typ_ctm FROM 249 FOR 1)='1'
INNER JOIN TOF_COUNTRY_DESIGNATIONS ON TOF_COUNTRY_DESIGNATIONS.CDS_ID = TYP_CDS_ID
INNER JOIN TOF_DES_TEXTS ON TOF_DES_TEXTS.TEX_ID = TOF_COUNTRY_DESIGNATIONS.CDS_TEX_ID
INNER JOIN TOF_MODELS ON MOD_ID = TYP_MOD_ID
INNER JOIN TOF_MANUFACTURERS ON MFA_ID = MOD_MFA_ID
INNER JOIN TOF_COUNTRY_DESIGNATIONS AS COUNTRY_DESIGNATIONS2 ON COUNTRY_DESIGNATIONS2.CDS_ID = MOD_CDS_ID AND SUBSTRING(COUNTRY_DESIGNATIONS2.cds_ctm FROM 249 FOR 1)='1'
INNER JOIN TOF_DES_TEXTS AS DES_TEXTS7 ON DES_TEXTS7.TEX_ID = COUNTRY_DESIGNATIONS2.CDS_TEX_ID
LEFT JOIN TOF_DESIGNATIONS ON TOF_DESIGNATIONS.DES_ID = TYP_KV_ENGINE_DES_ID
LEFT JOIN TOF_DES_TEXTS AS DES_TEXTS2 ON DES_TEXTS2.TEX_ID = TOF_DESIGNATIONS.DES_TEX_ID
LEFT JOIN TOF_DESIGNATIONS AS DESIGNATIONS2 ON DESIGNATIONS2.DES_ID = TYP_KV_FUEL_DES_ID
LEFT JOIN TOF_DES_TEXTS AS DES_TEXTS3 ON DES_TEXTS3.TEX_ID = DESIGNATIONS2.DES_TEX_ID
LEFT JOIN TOF_LINK_TYP_ENG ON LTE_TYP_ID = TYP_ID
LEFT JOIN TOF_ENGINES ON ENG_ID = LTE_ENG_ID
LEFT JOIN TOF_DESIGNATIONS AS DESIGNATIONS3 ON DESIGNATIONS3.DES_ID = TYP_KV_BODY_DES_ID
LEFT JOIN TOF_DES_TEXTS AS DES_TEXTS4 ON DES_TEXTS4.TEX_ID = DESIGNATIONS3.DES_TEX_ID
LEFT JOIN TOF_DESIGNATIONS AS DESIGNATIONS4 ON DESIGNATIONS4.DES_ID = TYP_KV_MODEL_DES_ID
LEFT JOIN TOF_DES_TEXTS AS DES_TEXTS5 ON DES_TEXTS5.TEX_ID = DESIGNATIONS4.DES_TEX_ID
LEFT JOIN TOF_DESIGNATIONS AS DESIGNATIONS5 ON DESIGNATIONS5.DES_ID = TYP_KV_AXLE_DES_ID
LEFT JOIN TOF_DES_TEXTS AS DES_TEXTS6 ON DES_TEXTS6.TEX_ID = DESIGNATIONS5.DES_TEX_ID

WHERE LA_ART_ID = 1359385

AND TOF_COUNTRY_DESIGNATIONS.CDS_LNG_ID = 37
AND COUNTRY_DESIGNATIONS2.CDS_LNG_ID = 37
AND (TOF_DESIGNATIONS.DES_LNG_ID IS NULL OR TOF_DESIGNATIONS.DES_LNG_ID = 37)
AND (DESIGNATIONS2.DES_LNG_ID IS NULL OR DESIGNATIONS2.DES_LNG_ID = 37)
AND (DESIGNATIONS3.DES_LNG_ID IS NULL OR DESIGNATIONS3.DES_LNG_ID = 37)
AND (DESIGNATIONS4.DES_LNG_ID IS NULL OR DESIGNATIONS4.DES_LNG_ID = 37)
AND (DESIGNATIONS5.DES_LNG_ID IS NULL OR DESIGNATIONS5.DES_LNG_ID = 37)
AND SUBSTRING(la_ctm FROM 249 FOR 1)='1'

GROUP BY tof_types.typ_id, tof_manufacturers.mfa_brand, des_texts7.tex_text, tof_des_texts.tex_text, TYP_PCON_START, TYP_PCON_END, TYP_CCM, TYP_KW_FROM, TYP_KW_UPTO, TYP_HP_FROM, TYP_HP_UPTO, TYP_CYLINDERS , des_texts2.tex_text, des_texts3.tex_text, des_texts4.tex_text, des_texts5.tex_text, des_texts6.tex_text ORDER BY MFA_BRAND, MOD_CDS_TEXT, TYP_CDS_TEXT, TYP_PCON_START, TYP_CCM

...

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05.11.2014, 16:53:15

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Огромная разница по времени выполнения запроса

#38796562

планы где

Гость

sabbath66Доброго дня всем,

Помогите, пожалуйста, разобраться. При примерно одинаковом количестве строк на выводе, при разных входящих данных один и тот-же запрос выполняется либо 1-2 секунды, либо 25 МИНУТ! Меняется только WHERE LA_ART_ID = 1359385 на 1359418. В одиночные кавычки ставить пробовал, таблицы проиндексированы. Заранее огромное спасибо. Вот сам запрос:

поправил

Код: sql

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SELECT	TYP_ID,	MFA_BRAND,	DES_TEXTS7.TEX_TEXT AS MOD_CDS_TEXT,	
			TOF_DES_TEXTS.TEX_TEXT AS TYP_CDS_TEXT,	TYP_PCON_START,	TYP_PCON_END,	 
			TYP_CCM,	TYP_KW_FROM,	TYP_KW_UPTO,	TYP_HP_FROM,	TYP_HP_UPTO,	
			TYP_CYLINDERS,	string_agg(TOF_ENGINES.ENG_CODE, ', '),	
			DES_TEXTS2.TEX_TEXT AS  TYP_ENGINE_DES_TEXT, 	
			DES_TEXTS3.TEX_TEXT AS TYP_FUEL_DES_TEXT, 	
			CASE WHEN DES_TEXTS4.TEX_TEXT IS NULL THEN DES_TEXTS5.TEX_TEXT ELSE DES_TEXTS4.TEX_TEXT END AS TYP_BODY_DES_TEXT, 	 
			DES_TEXTS6.TEX_TEXT AS TYP_AXLE_DES_TEXT, 	TYP_MAX_WEIGHT 

			FROM   TOF_LINK_ART 

			INNER JOIN TOF_LINK_LA_TYP ON LAT_LA_ID = LA_ID AND SUBSTRING(lat_ctm FROM 249 FOR 1)='1'
			INNER JOIN TOF_TYPES ON TYP_ID = LAT_TYP_ID AND SUBSTRING(typ_ctm FROM 249 FOR 1)='1' 
			INNER JOIN TOF_COUNTRY_DESIGNATIONS ON TOF_COUNTRY_DESIGNATIONS.CDS_ID = TYP_CDS_ID 
			INNER JOIN TOF_DES_TEXTS ON TOF_DES_TEXTS.TEX_ID = TOF_COUNTRY_DESIGNATIONS.CDS_TEX_ID 
			INNER JOIN TOF_MODELS ON MOD_ID = TYP_MOD_ID 
			INNER JOIN TOF_MANUFACTURERS ON MFA_ID = MOD_MFA_ID 
			INNER JOIN TOF_COUNTRY_DESIGNATIONS AS COUNTRY_DESIGNATIONS2 ON COUNTRY_DESIGNATIONS2.CDS_ID = MOD_CDS_ID AND SUBSTRING(COUNTRY_DESIGNATIONS2.cds_ctm FROM 249 FOR 1)='1' 
			INNER JOIN TOF_DES_TEXTS AS DES_TEXTS7 ON DES_TEXTS7.TEX_ID = COUNTRY_DESIGNATIONS2.CDS_TEX_ID 
			LEFT JOIN TOF_DESIGNATIONS ON TOF_DESIGNATIONS.DES_ID = TYP_KV_ENGINE_DES_ID 
			LEFT JOIN TOF_DES_TEXTS AS DES_TEXTS2 ON DES_TEXTS2.TEX_ID = TOF_DESIGNATIONS.DES_TEX_ID 
			LEFT JOIN TOF_DESIGNATIONS AS DESIGNATIONS2 ON DESIGNATIONS2.DES_ID = TYP_KV_FUEL_DES_ID 
			LEFT JOIN TOF_DES_TEXTS AS DES_TEXTS3 ON DES_TEXTS3.TEX_ID = DESIGNATIONS2.DES_TEX_ID 
			LEFT JOIN TOF_LINK_TYP_ENG ON LTE_TYP_ID = TYP_ID 
			LEFT JOIN TOF_ENGINES ON ENG_ID = LTE_ENG_ID 
			LEFT JOIN TOF_DESIGNATIONS AS DESIGNATIONS3 ON DESIGNATIONS3.DES_ID = TYP_KV_BODY_DES_ID 
			LEFT JOIN TOF_DES_TEXTS AS DES_TEXTS4 ON DES_TEXTS4.TEX_ID = DESIGNATIONS3.DES_TEX_ID 
			LEFT JOIN TOF_DESIGNATIONS AS DESIGNATIONS4 ON DESIGNATIONS4.DES_ID = TYP_KV_MODEL_DES_ID 
			LEFT JOIN TOF_DES_TEXTS AS DES_TEXTS5 ON DES_TEXTS5.TEX_ID = DESIGNATIONS4.DES_TEX_ID 
			LEFT JOIN TOF_DESIGNATIONS AS DESIGNATIONS5 ON DESIGNATIONS5.DES_ID = TYP_KV_AXLE_DES_ID 
			LEFT JOIN TOF_DES_TEXTS AS DES_TEXTS6 ON DES_TEXTS6.TEX_ID = DESIGNATIONS5.DES_TEX_ID 
			
			WHERE	LA_ART_ID = 1359385 
			
			AND	TOF_COUNTRY_DESIGNATIONS.CDS_LNG_ID = 37 
			AND	COUNTRY_DESIGNATIONS2.CDS_LNG_ID = 37 
			AND (TOF_DESIGNATIONS.DES_LNG_ID IS NULL OR TOF_DESIGNATIONS.DES_LNG_ID = 37) 
			AND (DESIGNATIONS2.DES_LNG_ID IS NULL OR DESIGNATIONS2.DES_LNG_ID = 37) 
			AND (DESIGNATIONS3.DES_LNG_ID IS NULL OR DESIGNATIONS3.DES_LNG_ID = 37) 
			AND (DESIGNATIONS4.DES_LNG_ID IS NULL OR DESIGNATIONS4.DES_LNG_ID = 37) 
			AND (DESIGNATIONS5.DES_LNG_ID IS NULL OR DESIGNATIONS5.DES_LNG_ID = 37)  
			AND SUBSTRING(la_ctm FROM 249 FOR 1)='1' 
			
			GROUP BY tof_types.typ_id, tof_manufacturers.mfa_brand, des_texts7.tex_text, tof_des_texts.tex_text, TYP_PCON_START, TYP_PCON_END, TYP_CCM,	TYP_KW_FROM,	TYP_KW_UPTO,	TYP_HP_FROM,	TYP_HP_UPTO,	TYP_CYLINDERS , des_texts2.tex_text, des_texts3.tex_text, des_texts4.tex_text, des_texts5.tex_text, des_texts6.tex_text ORDER BY	MFA_BRAND,	MOD_CDS_TEXT,	TYP_CDS_TEXT,	TYP_PCON_START,	TYP_CCM

планы где

...

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05.11.2014, 17:03:53

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Огромная разница по времени выполнения запроса

#38796590

sabbath66

Гость

>> планы где

В смысле?... Я не слишком большой знаток :)

...

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05.11.2014, 17:35:39

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Огромная разница по времени выполнения запроса

#38796595

RTFM FM FM

Гость

sabbath66,

http://www.postgresql.org/docs/current/static/sql-explain.html

...

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05.11.2014, 17:38:12

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Огромная разница по времени выполнения запроса

#38796619

sabbath66

Гость

Планы

для быстрого запроса

"Sort (cost=2139.20..2139.20 rows=1 width=315)"
" Sort Key: tof_manufacturers.mfa_brand, des_texts7.tex_text, tof_des_texts.tex_text, tof_types.typ_pcon_start, tof_types.typ_ccm"
" -> HashAggregate (cost=2139.17..2139.19 rows=1 width=315)"
" -> Nested Loop Left Join (cost=19.06..2139.13 rows=1 width=315)"
" -> Nested Loop Left Join (cost=18.63..2130.75 rows=1 width=282)"
" Filter: ((designations5.des_lng_id IS NULL) OR (designations5.des_lng_id = 37))"
" -> Nested Loop Left Join (cost=18.21..2121.62 rows=1 width=282)"
" -> Nested Loop Left Join (cost=17.78..2113.24 rows=1 width=249)"
" Filter: ((designations4.des_lng_id IS NULL) OR (designations4.des_lng_id = 37))"
" -> Nested Loop Left Join (cost=17.36..2104.10 rows=1 width=249)"
" -> Nested Loop Left Join (cost=16.93..2095.73 rows=1 width=216)"
" Filter: ((designations3.des_lng_id IS NULL) OR (designations3.des_lng_id = 37))"
" -> Nested Loop Left Join (cost=16.50..2086.59 rows=1 width=216)"
" -> Nested Loop Left Join (cost=16.22..2078.39 rows=1 width=212)"
" -> Nested Loop Left Join (cost=15.93..2070.15 rows=1 width=208)"
" -> Nested Loop Left Join (cost=15.50..2061.77 rows=1 width=175)"
" Filter: ((designations2.des_lng_id IS NULL) OR (designations2.des_lng_id = 37))"
" -> Nested Loop Left Join (cost=15.07..2052.63 rows=1 width=175)"
" -> Nested Loop Left Join (cost=14.65..2044.26 rows=1 width=142)"
" Filter: ((tof_designations.des_lng_id IS NULL) OR (tof_designations.des_lng_id = 37))"
" -> Nested Loop (cost=14.22..2035.12 rows=1 width=142)"
" -> Nested Loop (cost=13.79..2026.73 rows=1 width=109)"
" Join Filter: (tof_models.mod_mfa_id = tof_manufacturers.mfa_id)"
" -> Nested Loop (cost=13.79..2004.00 rows=1 width=102)"
" -> Nested Loop (cost=13.37..1995.62 rows=1 width=69)"
" -> Nested Loop (cost=12.93..1985.83 rows=1 width=69)"
" -> Nested Loop (cost=12.50..1975.78 rows=1 width=69)"
" -> Nested Loop (cost=12.22..1967.62 rows=1 width=67)"
" -> Nested Loop (cost=11.92..1959.38 rows=1 width=4)"
" -> Index Scan using tof_link_art_la_art_id_idx on tof_link_art (cost=0.44..405.35 rows=1 width=4)"
" Index Cond: (la_art_id = 1359385)"
" Filter: ("substring"((la_ctm)::"bit", 249, 1) = B'1'::"bit")"
" -> Bitmap Heap Scan on tof_link_la_typ (cost=11.49..1554.01 rows=2 width=8)"
" Recheck Cond: (lat_la_id = tof_link_art.la_id)"
" Filter: ("substring"((lat_ctm)::"bit", 249, 1) = B'1'::"bit")"
" -> Bitmap Index Scan on tof_link_la_typ_lat_la_id_idx (cost=0.00..11.49 rows=389 width=0)"
" Index Cond: (lat_la_id = tof_link_art.la_id)"
" -> Index Scan using tof_types_typ_id_idx on tof_types (cost=0.29..8.24 rows=1 width=67)"
" Index Cond: (typ_id = tof_link_la_typ.lat_typ_id)"
" Filter: ("substring"((typ_ctm)::"bit", 249, 1) = B'1'::"bit")"
" -> Index Scan using tof_models_mod_id_idx on tof_models (cost=0.29..8.15 rows=1 width=10)"
" Index Cond: (mod_id = tof_types.typ_mod_id)"
" -> Index Scan using tof_country_designations_cds_id_idx on tof_country_designations country_designations2 (cost=0.43..10.03 rows=1 width=8)"
" Index Cond: (cds_id = tof_models.mod_cds_id)"
" Filter: ((cds_lng_id = 37) AND ("substring"((cds_ctm)::"bit", 249, 1) = B'1'::"bit"))"
" -> Index Scan using tof_country_designations_cds_id_idx on tof_country_designations (cost=0.43..9.77 rows=2 width=8)"
" Index Cond: (cds_id = tof_types.typ_cds_id)"
" Filter: (cds_lng_id = 37)"
" -> Index Scan using tof_des_texts_tex_id_idx on tof_des_texts (cost=0.43..8.37 rows=1 width=41)"
" Index Cond: (tex_id = tof_country_designations.cds_tex_id)"
" -> Seq Scan on tof_manufacturers (cost=0.00..15.66 rows=566 width=11)"
" -> Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts7 (cost=0.43..8.38 rows=1 width=41)"
" Index Cond: (tex_id = country_designations2.cds_tex_id)"
" -> Index Scan using tof_designations_des_id_idx on tof_designations (cost=0.42..8.81 rows=26 width=10)"
" Index Cond: (des_id = tof_types.typ_kv_engine_des_id)"
" -> Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts2 (cost=0.43..8.37 rows=1 width=41)"
" Index Cond: (tex_id = tof_designations.des_tex_id)"
" -> Index Scan using tof_designations_des_id_idx on tof_designations designations2 (cost=0.42..8.81 rows=26 width=10)"
" Index Cond: (des_id = tof_types.typ_kv_fuel_des_id)"
" -> Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts3 (cost=0.43..8.37 rows=1 width=41)"
" Index Cond: (tex_id = designations2.des_tex_id)"
" -> Index Scan using tof_link_typ_eng_lte_typ_id_idx on tof_link_typ_eng (cost=0.29..8.23 rows=1 width=8)"
" Index Cond: (lte_typ_id = tof_types.typ_id)"
" -> Index Scan using tof_engines_eng_id_idx on tof_engines (cost=0.29..8.19 rows=1 width=12)"
" Index Cond: (eng_id = tof_link_typ_eng.lte_eng_id)"
" -> Index Scan using tof_designations_des_id_idx on tof_designations designations3 (cost=0.42..8.81 rows=26 width=10)"
" Index Cond: (des_id = tof_types.typ_kv_body_des_id)"
" -> Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts4 (cost=0.43..8.37 rows=1 width=41)"
" Index Cond: (tex_id = designations3.des_tex_id)"
" -> Index Scan using tof_designations_des_id_idx on tof_designations designations4 (cost=0.42..8.81 rows=26 width=10)"
" Index Cond: (des_id = tof_types.typ_kv_model_des_id)"
" -> Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts5 (cost=0.43..8.37 rows=1 width=41)"
" Index Cond: (tex_id = designations4.des_tex_id)"
" -> Index Scan using tof_designations_des_id_idx on tof_designations designations5 (cost=0.42..8.81 rows=26 width=10)"
" Index Cond: (des_id = tof_types.typ_kv_axle_des_id)"
" -> Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts6 (cost=0.43..8.37 rows=1 width=41)"
" Index Cond: (tex_id = designations5.des_tex_id)"

для медленного запроса

"Sort (cost=9526.92..9526.93 rows=1 width=315)"
" Sort Key: tof_manufacturers.mfa_brand, des_texts7.tex_text, tof_des_texts.tex_text, tof_types.typ_pcon_start, tof_types.typ_ccm"
" -> HashAggregate (cost=9526.90..9526.91 rows=1 width=315)"
" -> Nested Loop Left Join (cost=433.74..9526.85 rows=1 width=315)"
" -> Nested Loop Left Join (cost=433.32..9518.48 rows=1 width=282)"
" Filter: ((designations5.des_lng_id IS NULL) OR (designations5.des_lng_id = 37))"
" -> Nested Loop Left Join (cost=432.89..9509.34 rows=1 width=282)"
" -> Nested Loop Left Join (cost=432.46..9500.96 rows=1 width=249)"
" Filter: ((designations4.des_lng_id IS NULL) OR (designations4.des_lng_id = 37))"
" -> Nested Loop Left Join (cost=432.04..9491.83 rows=1 width=249)"
" -> Nested Loop Left Join (cost=431.61..9483.45 rows=1 width=216)"
" Filter: ((designations3.des_lng_id IS NULL) OR (designations3.des_lng_id = 37))"
" -> Nested Loop Left Join (cost=431.19..9474.31 rows=1 width=216)"
" -> Nested Loop Left Join (cost=430.90..9466.11 rows=1 width=212)"
" -> Nested Loop Left Join (cost=430.61..9457.87 rows=1 width=208)"
" -> Nested Loop Left Join (cost=430.18..9449.50 rows=1 width=175)"
" Filter: ((designations2.des_lng_id IS NULL) OR (designations2.des_lng_id = 37))"
" -> Nested Loop Left Join (cost=429.76..9440.36 rows=1 width=175)"
" -> Nested Loop Left Join (cost=429.33..9431.98 rows=1 width=142)"
" Filter: ((tof_designations.des_lng_id IS NULL) OR (tof_designations.des_lng_id = 37))"
" -> Nested Loop (cost=428.90..9422.84 rows=1 width=142)"
" -> Nested Loop (cost=428.48..9414.46 rows=1 width=109)"
" -> Nested Loop (cost=428.20..9407.55 rows=1 width=102)"
" -> Nested Loop (cost=427.77..9399.17 rows=1 width=69)"
" -> Nested Loop (cost=427.34..9389.38 rows=1 width=69)"
" -> Nested Loop (cost=426.90..9120.60 rows=32 width=73)"
" -> Nested Loop (cost=426.34..6765.70 rows=4 width=69)"
" -> Hash Join (cost=425.90..3180.04 rows=357 width=69)"
" Hash Cond: (tof_types.typ_mod_id = tof_models.mod_id)"
" -> Seq Scan on tof_types (cost=0.00..2747.44 rows=357 width=67)"
" Filter: ("substring"((typ_ctm)::"bit", 249, 1) = B'1'::"bit")"
" -> Hash (cost=289.29..289.29 rows=10929 width=10)"
" -> Seq Scan on tof_models (cost=0.00..289.29 rows=10929 width=10)"
" -> Index Scan using tof_country_designations_cds_id_idx on tof_country_designations country_designations2 (cost=0.43..10.03 rows=1 w (...)"
" Index Cond: (cds_id = tof_models.mod_cds_id)"
" Filter: ((cds_lng_id = 37) AND ("substring"((cds_ctm)::"bit", 249, 1) = B'1'::"bit"))"
" -> Index Scan using tof_link_la_typ_lat_typ_id_idx on tof_link_la_typ (cost=0.57..588.35 rows=38 width=8)"
" Index Cond: (lat_typ_id = tof_types.typ_id)"
" Filter: ("substring"((lat_ctm)::"bit", 249, 1) = B'1'::"bit")"
" -> Index Scan using tof_link_art_la_id_idx on tof_link_art (cost=0.44..8.39 rows=1 width=4)"
" Index Cond: (la_id = tof_link_la_typ.lat_la_id)"
" Filter: ((la_art_id = 1359418) AND ("substring"((la_ctm)::"bit", 249, 1) = B'1'::"bit"))"
" -> Index Scan using tof_country_designations_cds_id_idx on tof_country_designations (cost=0.43..9.77 rows=2 width=8)"
" Index Cond: (cds_id = tof_types.typ_cds_id)"
" Filter: (cds_lng_id = 37)"
" -> Index Scan using tof_des_texts_tex_id_idx on tof_des_texts (cost=0.43..8.37 rows=1 width=41)"
" Index Cond: (tex_id = tof_country_designations.cds_tex_id)"
" -> Index Scan using tof_manufacturers_mfa_id_idx on tof_manufacturers (cost=0.28..6.90 rows=1 width=11)"
" Index Cond: (mfa_id = tof_models.mod_mfa_id)"
" -> Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts7 (cost=0.43..8.38 rows=1 width=41)"
" Index Cond: (tex_id = country_designations2.cds_tex_id)"
" -> Index Scan using tof_designations_des_id_idx on tof_designations (cost=0.42..8.81 rows=26 width=10)"
" Index Cond: (des_id = tof_types.typ_kv_engine_des_id)"
" -> Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts2 (cost=0.43..8.37 rows=1 width=41)"
" Index Cond: (tex_id = tof_designations.des_tex_id)"
" -> Index Scan using tof_designations_des_id_idx on tof_designations designations2 (cost=0.42..8.81 rows=26 width=10)"
" Index Cond: (des_id = tof_types.typ_kv_fuel_des_id)"
" -> Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts3 (cost=0.43..8.37 rows=1 width=41)"
" Index Cond: (tex_id = designations2.des_tex_id)"
" -> Index Scan using tof_link_typ_eng_lte_typ_id_idx on tof_link_typ_eng (cost=0.29..8.23 rows=1 width=8)"
" Index Cond: (lte_typ_id = tof_types.typ_id)"
" -> Index Scan using tof_engines_eng_id_idx on tof_engines (cost=0.29..8.19 rows=1 width=12)"
" Index Cond: (eng_id = tof_link_typ_eng.lte_eng_id)"
" -> Index Scan using tof_designations_des_id_idx on tof_designations designations3 (cost=0.42..8.81 rows=26 width=10)"
" Index Cond: (des_id = tof_types.typ_kv_body_des_id)"
" -> Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts4 (cost=0.43..8.37 rows=1 width=41)"
" Index Cond: (tex_id = designations3.des_tex_id)"
" -> Index Scan using tof_designations_des_id_idx on tof_designations designations4 (cost=0.42..8.81 rows=26 width=10)"
" Index Cond: (des_id = tof_types.typ_kv_model_des_id)"
" -> Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts5 (cost=0.43..8.37 rows=1 width=41)"
" Index Cond: (tex_id = designations4.des_tex_id)"
" -> Index Scan using tof_designations_des_id_idx on tof_designations designations5 (cost=0.42..8.81 rows=26 width=10)"
" Index Cond: (des_id = tof_types.typ_kv_axle_des_id)"
" -> Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts6 (cost=0.43..8.37 rows=1 width=41)"
" Index Cond: (tex_id = designations5.des_tex_id)"

...

Рейтинг:

0 / 0

05.11.2014, 17:55:15

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Огромная разница по времени выполнения запроса

#38796640

ещё чуток

Гость

sabbath66Планы

для быстрого запроса

поправил

Код: sql

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Sort  (cost=2139.20..2139.20 rows=1 width=315)
  Sort Key: tof_manufacturers.mfa_brand, des_texts7.tex_text, tof_des_texts.tex_text, tof_types.typ_pcon_start, tof_types.typ_ccm
  ->  HashAggregate  (cost=2139.17..2139.19 rows=1 width=315)
        ->  Nested Loop Left Join  (cost=19.06..2139.13 rows=1 width=315)
              ->  Nested Loop Left Join  (cost=18.63..2130.75 rows=1 width=282)
                    Filter: ((designations5.des_lng_id IS NULL) OR (designations5.des_lng_id = 37))
                    ->  Nested Loop Left Join  (cost=18.21..2121.62 rows=1 width=282)
                          ->  Nested Loop Left Join  (cost=17.78..2113.24 rows=1 width=249)
                                Filter: ((designations4.des_lng_id IS NULL) OR (designations4.des_lng_id = 37))
                                ->  Nested Loop Left Join  (cost=17.36..2104.10 rows=1 width=249)
                                      ->  Nested Loop Left Join  (cost=16.93..2095.73 rows=1 width=216)
                                            Filter: ((designations3.des_lng_id IS NULL) OR (designations3.des_lng_id = 37))
                                            ->  Nested Loop Left Join  (cost=16.50..2086.59 rows=1 width=216)
                                                  ->  Nested Loop Left Join  (cost=16.22..2078.39 rows=1 width=212)
                                                        ->  Nested Loop Left Join  (cost=15.93..2070.15 rows=1 width=208)
                                                              ->  Nested Loop Left Join  (cost=15.50..2061.77 rows=1 width=175)
                                                                    Filter: ((designations2.des_lng_id IS NULL) OR (designations2.des_lng_id = 37))
                                                                    ->  Nested Loop Left Join  (cost=15.07..2052.63 rows=1 width=175)
                                                                          ->  Nested Loop Left Join  (cost=14.65..2044.26 rows=1 width=142)
                                                                                Filter: ((tof_designations.des_lng_id IS NULL) OR (tof_designations.des_lng_id = 37))
                                                                                ->  Nested Loop  (cost=14.22..2035.12 rows=1 width=142)
                                                                                      ->  Nested Loop  (cost=13.79..2026.73 rows=1 width=109)
                                                                                            Join Filter: (tof_models.mod_mfa_id = tof_manufacturers.mfa_id)
                                                                                            ->  Nested Loop  (cost=13.79..2004.00 rows=1 width=102)
                                                                                                  ->  Nested Loop  (cost=13.37..1995.62 rows=1 width=69)
                                                                                                        ->  Nested Loop  (cost=12.93..1985.83 rows=1 width=69)
                                                                                                              ->  Nested Loop  (cost=12.50..1975.78 rows=1 width=69)
                                                                                                                    ->  Nested Loop  (cost=12.22..1967.62 rows=1 width=67)
                                                                                                                          ->  Nested Loop  (cost=11.92..1959.38 rows=1 width=4)
                                                                                                                                ->  Index Scan using tof_link_art_la_art_id_idx on tof_link_art  (cost=0.44..405.35 rows=1 width=4)
                                                                                                                                      Index Cond: (la_art_id = 1359385)
                                                                                                                                      Filter: (substring((la_ctm)::bit, 249, 1) = B'1'::bit)
                                                                                                                                ->  Bitmap Heap Scan on tof_link_la_typ  (cost=11.49..1554.01 rows=2 width=8)
                                                                                                                                      Recheck Cond: (lat_la_id = tof_link_art.la_id)
                                                                                                                                      Filter: (substring((lat_ctm)::bit, 249, 1) = B'1'::bit)
                                                                                                                                      ->  Bitmap Index Scan on tof_link_la_typ_lat_la_id_idx  (cost=0.00..11.49 rows=389 width=0)
                                                                                                                                            Index Cond: (lat_la_id = tof_link_art.la_id)
                                                                                                                          ->  Index Scan using tof_types_typ_id_idx on tof_types  (cost=0.29..8.24 rows=1 width=67)
                                                                                                                                Index Cond: (typ_id = tof_link_la_typ.lat_typ_id)
                                                                                                                                Filter: (substring((typ_ctm)::bit, 249, 1) = B'1'::bit)
                                                                                                                    ->  Index Scan using tof_models_mod_id_idx on tof_models  (cost=0.29..8.15 rows=1 width=10)
                                                                                                                          Index Cond: (mod_id = tof_types.typ_mod_id)
                                                                                                              ->  Index Scan using tof_country_designations_cds_id_idx on tof_country_designations country_designations2  (cost=0.43..10.03 rows=1 width=8)
                                                                                                                    Index Cond: (cds_id = tof_models.mod_cds_id)
                                                                                                                    Filter: ((cds_lng_id = 37) AND (substring((cds_ctm)::bit, 249, 1) = B'1'::bit))
                                                                                                        ->  Index Scan using tof_country_designations_cds_id_idx on tof_country_designations  (cost=0.43..9.77 rows=2 width=8)
                                                                                                              Index Cond: (cds_id = tof_types.typ_cds_id)
                                                                                                              Filter: (cds_lng_id = 37)
                                                                                                  ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts  (cost=0.43..8.37 rows=1 width=41)
                                                                                                        Index Cond: (tex_id = tof_country_designations.cds_tex_id)
                                                                                            ->  Seq Scan on tof_manufacturers  (cost=0.00..15.66 rows=566 width=11)
                                                                                      ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts7  (cost=0.43..8.38 rows=1 width=41)
                                                                                            Index Cond: (tex_id = country_designations2.cds_tex_id)
                                                                                ->  Index Scan using tof_designations_des_id_idx on tof_designations  (cost=0.42..8.81 rows=26 width=10)
                                                                                      Index Cond: (des_id = tof_types.typ_kv_engine_des_id)
                                                                          ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts2  (cost=0.43..8.37 rows=1 width=41)
                                                                                Index Cond: (tex_id = tof_designations.des_tex_id)
                                                                    ->  Index Scan using tof_designations_des_id_idx on tof_designations designations2  (cost=0.42..8.81 rows=26 width=10)
                                                                          Index Cond: (des_id = tof_types.typ_kv_fuel_des_id)
                                                              ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts3  (cost=0.43..8.37 rows=1 width=41)
                                                                    Index Cond: (tex_id = designations2.des_tex_id)
                                                        ->  Index Scan using tof_link_typ_eng_lte_typ_id_idx on tof_link_typ_eng  (cost=0.29..8.23 rows=1 width=8)
                                                              Index Cond: (lte_typ_id = tof_types.typ_id)
                                                  ->  Index Scan using tof_engines_eng_id_idx on tof_engines  (cost=0.29..8.19 rows=1 width=12)
                                                        Index Cond: (eng_id = tof_link_typ_eng.lte_eng_id)
                                            ->  Index Scan using tof_designations_des_id_idx on tof_designations designations3  (cost=0.42..8.81 rows=26 width=10)
                                                  Index Cond: (des_id = tof_types.typ_kv_body_des_id)
                                      ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts4  (cost=0.43..8.37 rows=1 width=41)
                                            Index Cond: (tex_id = designations3.des_tex_id)
                                ->  Index Scan using tof_designations_des_id_idx on tof_designations designations4  (cost=0.42..8.81 rows=26 width=10)
                                      Index Cond: (des_id = tof_types.typ_kv_model_des_id)
                          ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts5  (cost=0.43..8.37 rows=1 width=41)
                                Index Cond: (tex_id = designations4.des_tex_id)
                    ->  Index Scan using tof_designations_des_id_idx on tof_designations designations5  (cost=0.42..8.81 rows=26 width=10)
                          Index Cond: (des_id = tof_types.typ_kv_axle_des_id)
              ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts6  (cost=0.43..8.37 rows=1 width=41)
                    Index Cond: (tex_id = designations5.des_tex_id)

для медленного запроса

поправил

Код: sql

Sort  (cost=9526.92..9526.93 rows=1 width=315)
  Sort Key: tof_manufacturers.mfa_brand, des_texts7.tex_text, tof_des_texts.tex_text, tof_types.typ_pcon_start, tof_types.typ_ccm
  ->  HashAggregate  (cost=9526.90..9526.91 rows=1 width=315)
        ->  Nested Loop Left Join  (cost=433.74..9526.85 rows=1 width=315)
              ->  Nested Loop Left Join  (cost=433.32..9518.48 rows=1 width=282)
                    Filter: ((designations5.des_lng_id IS NULL) OR (designations5.des_lng_id = 37))
                    ->  Nested Loop Left Join  (cost=432.89..9509.34 rows=1 width=282)
                          ->  Nested Loop Left Join  (cost=432.46..9500.96 rows=1 width=249)
                                Filter: ((designations4.des_lng_id IS NULL) OR (designations4.des_lng_id = 37))
                                ->  Nested Loop Left Join  (cost=432.04..9491.83 rows=1 width=249)
                                      ->  Nested Loop Left Join  (cost=431.61..9483.45 rows=1 width=216)
                                            Filter: ((designations3.des_lng_id IS NULL) OR (designations3.des_lng_id = 37))
                                            ->  Nested Loop Left Join  (cost=431.19..9474.31 rows=1 width=216)
                                                  ->  Nested Loop Left Join  (cost=430.90..9466.11 rows=1 width=212)
                                                        ->  Nested Loop Left Join  (cost=430.61..9457.87 rows=1 width=208)
                                                              ->  Nested Loop Left Join  (cost=430.18..9449.50 rows=1 width=175)
                                                                    Filter: ((designations2.des_lng_id IS NULL) OR (designations2.des_lng_id = 37))
                                                                    ->  Nested Loop Left Join  (cost=429.76..9440.36 rows=1 width=175)
                                                                          ->  Nested Loop Left Join  (cost=429.33..9431.98 rows=1 width=142)
                                                                                Filter: ((tof_designations.des_lng_id IS NULL) OR (tof_designations.des_lng_id = 37))
                                                                                ->  Nested Loop  (cost=428.90..9422.84 rows=1 width=142)
                                                                                      ->  Nested Loop  (cost=428.48..9414.46 rows=1 width=109)
                                                                                            ->  Nested Loop  (cost=428.20..9407.55 rows=1 width=102)
                                                                                                  ->  Nested Loop  (cost=427.77..9399.17 rows=1 width=69)
                                                                                                        ->  Nested Loop  (cost=427.34..9389.38 rows=1 width=69)
                                                                                                              ->  Nested Loop  (cost=426.90..9120.60 rows=32 width=73)
                                                                                                                    ->  Nested Loop  (cost=426.34..6765.70 rows=4 width=69)
                                                                                                                          ->  Hash Join  (cost=425.90..3180.04 rows=357 width=69)
                                                                                                                                Hash Cond: (tof_types.typ_mod_id = tof_models.mod_id)
                                                                                                                                ->  Seq Scan on tof_types  (cost=0.00..2747.44 rows=357 width=67)
                                                                                                                                      Filter: (substring((typ_ctm)::bit, 249, 1) = B'1'::bit)
                                                                                                                                ->  Hash  (cost=289.29..289.29 rows=10929 width=10)
                                                                                                                                      ->  Seq Scan on tof_models  (cost=0.00..289.29 rows=10929 width=10)
                                                                                                                          ->  Index Scan using tof_country_designations_cds_id_idx on tof_country_designations country_designations2  (cost=0.43..10.03 rows=1 w (...)
                                                                                                                                Index Cond: (cds_id = tof_models.mod_cds_id)
                                                                                                                                Filter: ((cds_lng_id = 37) AND (substring((cds_ctm)::bit, 249, 1) = B'1'::bit))
                                                                                                                    ->  Index Scan using tof_link_la_typ_lat_typ_id_idx on tof_link_la_typ  (cost=0.57..588.35 rows=38 width=8)
                                                                                                                          Index Cond: (lat_typ_id = tof_types.typ_id)
                                                                                                                          Filter: (substring((lat_ctm)::bit, 249, 1) = B'1'::bit)
                                                                                                              ->  Index Scan using tof_link_art_la_id_idx on tof_link_art  (cost=0.44..8.39 rows=1 width=4)
                                                                                                                    Index Cond: (la_id = tof_link_la_typ.lat_la_id)
                                                                                                                    Filter: ((la_art_id = 1359418) AND (substring((la_ctm)::bit, 249, 1) = B'1'::bit))
                                                                                                        ->  Index Scan using tof_country_designations_cds_id_idx on tof_country_designations  (cost=0.43..9.77 rows=2 width=8)
                                                                                                              Index Cond: (cds_id = tof_types.typ_cds_id)
                                                                                                              Filter: (cds_lng_id = 37)
                                                                                                  ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts  (cost=0.43..8.37 rows=1 width=41)
                                                                                                        Index Cond: (tex_id = tof_country_designations.cds_tex_id)
                                                                                            ->  Index Scan using tof_manufacturers_mfa_id_idx on tof_manufacturers  (cost=0.28..6.90 rows=1 width=11)
                                                                                                  Index Cond: (mfa_id = tof_models.mod_mfa_id)
                                                                                      ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts7  (cost=0.43..8.38 rows=1 width=41)
                                                                                            Index Cond: (tex_id = country_designations2.cds_tex_id)
                                                                                ->  Index Scan using tof_designations_des_id_idx on tof_designations  (cost=0.42..8.81 rows=26 width=10)
                                                                                      Index Cond: (des_id = tof_types.typ_kv_engine_des_id)
                                                                          ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts2  (cost=0.43..8.37 rows=1 width=41)
                                                                                Index Cond: (tex_id = tof_designations.des_tex_id)
                                                                    ->  Index Scan using tof_designations_des_id_idx on tof_designations designations2  (cost=0.42..8.81 rows=26 width=10)
                                                                          Index Cond: (des_id = tof_types.typ_kv_fuel_des_id)
                                                              ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts3  (cost=0.43..8.37 rows=1 width=41)
                                                                    Index Cond: (tex_id = designations2.des_tex_id)
                                                        ->  Index Scan using tof_link_typ_eng_lte_typ_id_idx on tof_link_typ_eng  (cost=0.29..8.23 rows=1 width=8)
                                                              Index Cond: (lte_typ_id = tof_types.typ_id)
                                                  ->  Index Scan using tof_engines_eng_id_idx on tof_engines  (cost=0.29..8.19 rows=1 width=12)
                                                        Index Cond: (eng_id = tof_link_typ_eng.lte_eng_id)
                                            ->  Index Scan using tof_designations_des_id_idx on tof_designations designations3  (cost=0.42..8.81 rows=26 width=10)
                                                  Index Cond: (des_id = tof_types.typ_kv_body_des_id)
                                      ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts4  (cost=0.43..8.37 rows=1 width=41)
                                            Index Cond: (tex_id = designations3.des_tex_id)
                                ->  Index Scan using tof_designations_des_id_idx on tof_designations designations4  (cost=0.42..8.81 rows=26 width=10)
                                      Index Cond: (des_id = tof_types.typ_kv_model_des_id)
                          ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts5  (cost=0.43..8.37 rows=1 width=41)
                                Index Cond: (tex_id = designations4.des_tex_id)
                    ->  Index Scan using tof_designations_des_id_idx on tof_designations designations5  (cost=0.42..8.81 rows=26 width=10)
                          Index Cond: (des_id = tof_types.typ_kv_axle_des_id)
              ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts6  (cost=0.43..8.37 rows=1 width=41)
                    Index Cond: (tex_id = designations5.des_tex_id)

приведите explain analyze

для медленного -- попробуйте запретить перед выполнением

Код: sql

SET "enable_hashjoin" TO OFF;

...

Рейтинг:

0 / 0

05.11.2014, 18:09:12

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Огромная разница по времени выполнения запроса

#38796719

sabbath66

Гость

explain analyze

для быстрого запроса (Total runtime: 3211.937 ms)

Код: sql

"Sort  (cost=2139.20..2139.20 rows=1 width=315) (actual time=3202.135..3208.528 rows=4954 loops=1)"
"  Sort Key: tof_manufacturers.mfa_brand, des_texts7.tex_text, tof_des_texts.tex_text, tof_types.typ_pcon_start, tof_types.typ_ccm"
"  Sort Method: external merge  Disk: 672kB"
"  ->  HashAggregate  (cost=2139.17..2139.19 rows=1 width=315) (actual time=3122.165..3125.814 rows=4954 loops=1)"
"        ->  Nested Loop Left Join  (cost=19.06..2139.13 rows=1 width=315) (actual time=3.698..3096.331 rows=7746 loops=1)"
"              ->  Nested Loop Left Join  (cost=18.63..2130.75 rows=1 width=282) (actual time=3.690..3087.626 rows=7746 loops=1)"
"                    Filter: ((designations5.des_lng_id IS NULL) OR (designations5.des_lng_id = 37))"
"                    Rows Removed by Filter: 4488"
"                    ->  Nested Loop Left Join  (cost=18.21..2121.62 rows=1 width=282) (actual time=3.684..3077.233 rows=7746 loops=1)"
"                          ->  Nested Loop Left Join  (cost=17.78..2113.24 rows=1 width=249) (actual time=3.679..3069.414 rows=7746 loops=1)"
"                                Filter: ((designations4.des_lng_id IS NULL) OR (designations4.des_lng_id = 37))"
"                                Rows Removed by Filter: 4488"
"                                ->  Nested Loop Left Join  (cost=17.36..2104.10 rows=1 width=249) (actual time=3.672..3058.891 rows=7746 loops=1)"
"                                      ->  Nested Loop Left Join  (cost=16.93..2095.73 rows=1 width=216) (actual time=3.608..3029.255 rows=7746 loops=1)"
"                                            Filter: ((designations3.des_lng_id IS NULL) OR (designations3.des_lng_id = 37))"
"                                            Rows Removed by Filter: 251130"
"                                            ->  Nested Loop Left Join  (cost=16.50..2086.59 rows=1 width=216) (actual time=3.497..2904.597 rows=7746 loops=1)"
"                                                  ->  Nested Loop Left Join  (cost=16.22..2078.39 rows=1 width=212) (actual time=3.489..2871.977 rows=7746 loops=1)"
"                                                        ->  Nested Loop Left Join  (cost=15.93..2070.15 rows=1 width=208) (actual time=3.458..2843.024 rows=6154 loops=1)"
"                                                              ->  Nested Loop Left Join  (cost=15.50..2061.77 rows=1 width=175) (actual time=3.446..2821.880 rows=6154 loops=1)"
"                                                                    Filter: ((designations2.des_lng_id IS NULL) OR (designations2.des_lng_id = 37))"
"                                                                    Rows Removed by Filter: 203016"
"                                                                    ->  Nested Loop Left Join  (cost=15.07..2052.63 rows=1 width=175) (actual time=3.392..2722.860 rows=6154 loops=1)"
"                                                                          ->  Nested Loop Left Join  (cost=14.65..2044.26 rows=1 width=142) (actual time=3.349..2700.522 rows=6154 loops=1)"
"                                                                                Filter: ((tof_designations.des_lng_id IS NULL) OR (tof_designations.des_lng_id = 37))"
"                                                                                Rows Removed by Filter: 203082"
"                                                                                ->  Nested Loop  (cost=14.22..2035.12 rows=1 width=142) (actual time=3.222..2599.490 rows=6154 loops=1)"
"                                                                                      ->  Nested Loop  (cost=13.79..2026.73 rows=1 width=109) (actual time=2.897..2568.207 rows=6154 loops=1)"
"                                                                                            Join Filter: (tof_models.mod_mfa_id = tof_manufacturers.mfa_id)"
"                                                                                            Rows Removed by Join Filter: 3477010"
"                                                                                            ->  Nested Loop  (cost=13.79..2004.00 rows=1 width=102) (actual time=2.752..1676.075 rows=6154 loops=1)"
"                                                                                                  ->  Nested Loop  (cost=13.37..1995.62 rows=1 width=69) (actual time=2.694..1638.228 rows=6154 loops=1)"
"                                                                                                        ->  Nested Loop  (cost=12.93..1985.83 rows=1 width=69) (actual time=2.592..271.413 rows=6080 loops=1)"
"                                                                                                              ->  Nested Loop  (cost=12.50..1975.78 rows=1 width=69) (actual time=2.435..179.324 rows=4492 loops=1)"
"                                                                                                                    ->  Nested Loop  (cost=12.22..1967.62 rows=1 width=67) (actual time=2.390..160.265 rows=4492 loops=1)"
"                                                                                                                          ->  Nested Loop  (cost=11.92..1959.38 rows=1 width=4) (actual time=0.121..119.546 rows=4686 loops=1)"
"                                                                                                                                ->  Index Scan using tof_link_art_la_art_id_idx on tof_link_art  (cost=0.44..405.35 rows=1 width=4) (actual time=0.069..2.118 ro (...)"
"                                                                                                                                      Index Cond: (la_art_id = 1359385)"
"                                                                                                                                      Filter: ("substring"((la_ctm)::"bit", 249, 1) = B'1'::"bit")"
"                                                                                                                                ->  Bitmap Heap Scan on tof_link_la_typ  (cost=11.49..1554.01 rows=2 width=8) (actual time=0.046..0.101 rows=4 loops=1120)"
"                                                                                                                                      Recheck Cond: (lat_la_id = tof_link_art.la_id)"
"                                                                                                                                      Filter: ("substring"((lat_ctm)::"bit", 249, 1) = B'1'::"bit")"
"                                                                                                                                      ->  Bitmap Index Scan on tof_link_la_typ_lat_la_id_idx  (cost=0.00..11.49 rows=389 width=0) (actual time=0.006..0.006 rows (...)"
"                                                                                                                                            Index Cond: (lat_la_id = tof_link_art.la_id)"
"                                                                                                                          ->  Index Scan using tof_types_typ_id_idx on tof_types  (cost=0.29..8.24 rows=1 width=67) (actual time=0.007..0.007 rows=1 loops=4686)"
"                                                                                                                                Index Cond: (typ_id = tof_link_la_typ.lat_typ_id)"
"                                                                                                                                Filter: ("substring"((typ_ctm)::"bit", 249, 1) = B'1'::"bit")"
"                                                                                                                                Rows Removed by Filter: 0"
"                                                                                                                    ->  Index Scan using tof_models_mod_id_idx on tof_models  (cost=0.29..8.15 rows=1 width=10) (actual time=0.003..0.003 rows=1 loops=4492)"
"                                                                                                                          Index Cond: (mod_id = tof_types.typ_mod_id)"
"                                                                                                              ->  Index Scan using tof_country_designations_cds_id_idx on tof_country_designations country_designations2  (cost=0.43..10.03 rows=1 width=8) (act (...)"
"                                                                                                                    Index Cond: (cds_id = tof_models.mod_cds_id)"
"                                                                                                                    Filter: ((cds_lng_id = 37) AND ("substring"((cds_ctm)::"bit", 249, 1) = B'1'::"bit"))"
"                                                                                                                    Rows Removed by Filter: 45"
"                                                                                                        ->  Index Scan using tof_country_designations_cds_id_idx on tof_country_designations  (cost=0.43..9.77 rows=2 width=8) (actual time=0.223..0.224 rows=1  (...)"
"                                                                                                              Index Cond: (cds_id = tof_types.typ_cds_id)"
"                                                                                                              Filter: (cds_lng_id = 37)"
"                                                                                                              Rows Removed by Filter: 28"
"                                                                                                  ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts  (cost=0.43..8.37 rows=1 width=41) (actual time=0.005..0.005 rows=1 loops=6154)"
"                                                                                                        Index Cond: (tex_id = tof_country_designations.cds_tex_id)"
"                                                                                            ->  Seq Scan on tof_manufacturers  (cost=0.00..15.66 rows=566 width=11) (actual time=0.002..0.068 rows=566 loops=6154)"
"                                                                                      ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts7  (cost=0.43..8.38 rows=1 width=41) (actual time=0.004..0.004 rows=1 loops=6154)"
"                                                                                            Index Cond: (tex_id = country_designations2.cds_tex_id)"
"                                                                                ->  Index Scan using tof_designations_des_id_idx on tof_designations  (cost=0.42..8.81 rows=26 width=10) (actual time=0.003..0.010 rows=34 loops=6154)"
"                                                                                      Index Cond: (des_id = tof_types.typ_kv_engine_des_id)"
"                                                                          ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts2  (cost=0.43..8.37 rows=1 width=41) (actual time=0.002..0.003 rows=1 loops=6154)"
"                                                                                Index Cond: (tex_id = tof_designations.des_tex_id)"
"                                                                    ->  Index Scan using tof_designations_des_id_idx on tof_designations designations2  (cost=0.42..8.81 rows=26 width=10) (actual time=0.003..0.010 rows=34 loops=6154)"
"                                                                          Index Cond: (des_id = tof_types.typ_kv_fuel_des_id)"
"                                                              ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts3  (cost=0.43..8.37 rows=1 width=41) (actual time=0.002..0.003 rows=1 loops=6154)"
"                                                                    Index Cond: (tex_id = designations2.des_tex_id)"
"                                                        ->  Index Scan using tof_link_typ_eng_lte_typ_id_idx on tof_link_typ_eng  (cost=0.29..8.23 rows=1 width=8) (actual time=0.003..0.004 rows=1 loops=6154)"
"                                                              Index Cond: (lte_typ_id = tof_types.typ_id)"
"                                                  ->  Index Scan using tof_engines_eng_id_idx on tof_engines  (cost=0.29..8.19 rows=1 width=12) (actual time=0.003..0.003 rows=1 loops=7746)"
"                                                        Index Cond: (eng_id = tof_link_typ_eng.lte_eng_id)"
"                                            ->  Index Scan using tof_designations_des_id_idx on tof_designations designations3  (cost=0.42..8.81 rows=26 width=10) (actual time=0.003..0.010 rows=33 loops=7746)"
"                                                  Index Cond: (des_id = tof_types.typ_kv_body_des_id)"
"                                      ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts4  (cost=0.43..8.37 rows=1 width=41) (actual time=0.003..0.003 rows=1 loops=7746)"
"                                            Index Cond: (tex_id = designations3.des_tex_id)"
"                                ->  Index Scan using tof_designations_des_id_idx on tof_designations designations4  (cost=0.42..8.81 rows=26 width=10) (actual time=0.000..0.000 rows=1 loops=7746)"
"                                      Index Cond: (des_id = tof_types.typ_kv_model_des_id)"
"                          ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts5  (cost=0.43..8.37 rows=1 width=41) (actual time=0.000..0.000 rows=0 loops=7746)"
"                                Index Cond: (tex_id = designations4.des_tex_id)"
"                    ->  Index Scan using tof_designations_des_id_idx on tof_designations designations5  (cost=0.42..8.81 rows=26 width=10) (actual time=0.000..0.000 rows=1 loops=7746)"
"                          Index Cond: (des_id = tof_types.typ_kv_axle_des_id)"
"              ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts6  (cost=0.43..8.37 rows=1 width=41) (actual time=0.000..0.000 rows=0 loops=7746)"
"                    Index Cond: (tex_id = designations5.des_tex_id)"
"Total runtime: 3211.937 ms"

для медленного запроса (Total runtime: 2515331.458 ms)

Код: sql

"Sort  (cost=9617.36..9617.36 rows=1 width=315) (actual time=2515319.947..2515327.117 rows=5143 loops=1)"
"  Sort Key: tof_manufacturers.mfa_brand, des_texts7.tex_text, tof_des_texts.tex_text, tof_types.typ_pcon_start, tof_types.typ_ccm"
"  Sort Method: external merge  Disk: 704kB"
"  ->  HashAggregate  (cost=9617.34..9617.35 rows=1 width=315) (actual time=2515232.253..2515235.955 rows=5143 loops=1)"
"        ->  Nested Loop Left Join  (cost=2770.70..9617.29 rows=1 width=315) (actual time=56400.776..2515161.491 rows=7217 loops=1)"
"              ->  Nested Loop Left Join  (cost=2770.27..9608.91 rows=1 width=282) (actual time=56400.772..2515140.997 rows=7217 loops=1)"
"                    Filter: ((designations5.des_lng_id IS NULL) OR (designations5.des_lng_id = 37))"
"                    Rows Removed by Filter: 4653"
"                    ->  Nested Loop Left Join  (cost=2769.85..9599.78 rows=1 width=282) (actual time=56400.768..2515115.229 rows=7217 loops=1)"
"                          ->  Nested Loop Left Join  (cost=2769.42..9591.40 rows=1 width=249) (actual time=56400.765..2515095.557 rows=7217 loops=1)"
"                                Filter: ((designations4.des_lng_id IS NULL) OR (designations4.des_lng_id = 37))"
"                                Rows Removed by Filter: 4653"
"                                ->  Nested Loop Left Join  (cost=2769.00..9582.26 rows=1 width=249) (actual time=56400.754..2515066.013 rows=7217 loops=1)"
"                                      ->  Nested Loop Left Join  (cost=2768.57..9573.89 rows=1 width=216) (actual time=56400.222..2514990.633 rows=7217 loops=1)"
"                                            Filter: ((designations3.des_lng_id IS NULL) OR (designations3.des_lng_id = 37))"
"                                            Rows Removed by Filter: 233508"
"                                            ->  Nested Loop Left Join  (cost=2768.14..9564.75 rows=1 width=216) (actual time=56400.167..2514811.970 rows=7217 loops=1)"
"                                                  ->  Nested Loop Left Join  (cost=2767.86..9556.55 rows=1 width=212) (actual time=56400.138..2512323.507 rows=7217 loops=1)"
"                                                        ->  Nested Loop Left Join  (cost=2767.57..9548.31 rows=1 width=208) (actual time=56400.110..2510200.349 rows=5682 loops=1)"
"                                                              ->  Nested Loop Left Join  (cost=2767.14..9539.93 rows=1 width=175) (actual time=56400.091..2510154.587 rows=5682 loops=1)"
"                                                                    Filter: ((designations2.des_lng_id IS NULL) OR (designations2.des_lng_id = 37))"
"                                                                    Rows Removed by Filter: 187440"
"                                                                    ->  Nested Loop Left Join  (cost=2766.71..9530.79 rows=1 width=175) (actual time=56400.037..2510010.039 rows=5682 loops=1)"
"                                                                          ->  Nested Loop Left Join  (cost=2766.29..9522.42 rows=1 width=142) (actual time=56400.011..2509951.582 rows=5682 loops=1)"
"                                                                                Filter: ((tof_designations.des_lng_id IS NULL) OR (tof_designations.des_lng_id = 37))"
"                                                                                Rows Removed by Filter: 187506"
"                                                                                ->  Nested Loop  (cost=2765.86..9513.28 rows=1 width=142) (actual time=56399.955..2509792.104 rows=5682 loops=1)"
"                                                                                      ->  Nested Loop  (cost=2765.43..9504.89 rows=1 width=109) (actual time=56399.924..2509111.755 rows=5682 loops=1)"
"                                                                                            ->  Nested Loop  (cost=2765.16..9497.99 rows=1 width=102) (actual time=56399.876..2509047.978 rows=5682 loops=1)"
"                                                                                                  ->  Nested Loop  (cost=2764.73..9489.61 rows=1 width=69) (actual time=56399.837..2507992.854 rows=5682 loops=1)"
"                                                                                                        ->  Nested Loop  (cost=2764.30..9479.82 rows=1 width=69) (actual time=56399.785..2502911.294 rows=5607 loops=1)"
"                                                                                                              ->  Nested Loop  (cost=2763.86..9211.04 rows=32 width=73) (actual time=123.243..200571.128 rows=148270092 loops=1)"
"                                                                                                                    ->  Nested Loop  (cost=2763.29..6856.14 rows=4 width=69) (actual time=122.372..2548.661 rows=53228 loops=1)"
"                                                                                                                          ->  Merge Join  (cost=2762.86..3270.47 rows=357 width=69) (actual time=122.297..950.369 rows=47531 loops=1)"
"                                                                                                                                Merge Cond: (tof_models.mod_id = tof_types.typ_mod_id)"
"                                                                                                                                ->  Index Scan using tof_models_mod_id_idx on tof_models  (cost=0.29..475.22 rows=10929 width=10) (actual time=0.016..19.778 row (...)"
"                                                                                                                                ->  Sort  (cost=2762.58..2763.47 rows=357 width=67) (actual time=122.271..768.263 rows=47531 loops=1)"
"                                                                                                                                      Sort Key: tof_types.typ_mod_id"
"                                                                                                                                      Sort Method: external sort  Disk: 3304kB"
"                                                                                                                                      ->  Seq Scan on tof_types  (cost=0.00..2747.44 rows=357 width=67) (actual time=0.010..51.546 rows=47531 loops=1)"
"                                                                                                                                            Filter: ("substring"((typ_ctm)::"bit", 249, 1) = B'1'::"bit")"
"                                                                                                                                            Rows Removed by Filter: 23965"
"                                                                                                                          ->  Index Scan using tof_country_designations_cds_id_idx on tof_country_designations country_designations2  (cost=0.43..10.03 rows=1 w (...)"
"                                                                                                                                Index Cond: (cds_id = tof_models.mod_cds_id)"
"                                                                                                                                Filter: ((cds_lng_id = 37) AND ("substring"((cds_ctm)::"bit", 249, 1) = B'1'::"bit"))"
"                                                                                                                                Rows Removed by Filter: 36"
"                                                                                                                    ->  Index Scan using tof_link_la_typ_lat_typ_id_idx on tof_link_la_typ  (cost=0.57..588.35 rows=38 width=8) (actual time=0.791..2.937 rows=2 (...)"
"                                                                                                                          Index Cond: (lat_typ_id = tof_types.typ_id)"
"                                                                                                                          Filter: ("substring"((lat_ctm)::"bit", 249, 1) = B'1'::"bit")"
"                                                                                                                          Rows Removed by Filter: 45"
"                                                                                                              ->  Index Scan using tof_link_art_la_id_idx on tof_link_art  (cost=0.44..8.39 rows=1 width=4) (actual time=0.015..0.015 rows=0 loops=148270092)"
"                                                                                                                    Index Cond: (la_id = tof_link_la_typ.lat_la_id)"
"                                                                                                                    Filter: ((la_art_id = 1359418) AND ("substring"((la_ctm)::"bit", 249, 1) = B'1'::"bit"))"
"                                                                                                                    Rows Removed by Filter: 1"
"                                                                                                        ->  Index Scan using tof_country_designations_cds_id_idx on tof_country_designations  (cost=0.43..9.77 rows=2 width=8) (actual time=0.899..0.903 rows=1  (...)"
"                                                                                                              Index Cond: (cds_id = tof_types.typ_cds_id)"
"                                                                                                              Filter: (cds_lng_id = 37)"
"                                                                                                              Rows Removed by Filter: 28"
"                                                                                                  ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts  (cost=0.43..8.37 rows=1 width=41) (actual time=0.181..0.182 rows=1 loops=5682)"
"                                                                                                        Index Cond: (tex_id = tof_country_designations.cds_tex_id)"
"                                                                                            ->  Index Scan using tof_manufacturers_mfa_id_idx on tof_manufacturers  (cost=0.28..6.90 rows=1 width=11) (actual time=0.007..0.008 rows=1 loops=5682)"
"                                                                                                  Index Cond: (mfa_id = tof_models.mod_mfa_id)"
"                                                                                      ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts7  (cost=0.43..8.38 rows=1 width=41) (actual time=0.116..0.117 rows=1 loops=5682)"
"                                                                                            Index Cond: (tex_id = country_designations2.cds_tex_id)"
"                                                                                ->  Index Scan using tof_designations_des_id_idx on tof_designations  (cost=0.42..8.81 rows=26 width=10) (actual time=0.010..0.018 rows=34 loops=5682)"
"                                                                                      Index Cond: (des_id = tof_types.typ_kv_engine_des_id)"
"                                                                          ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts2  (cost=0.43..8.37 rows=1 width=41) (actual time=0.007..0.008 rows=1 loops=5682)"
"                                                                                Index Cond: (tex_id = tof_designations.des_tex_id)"
"                                                                    ->  Index Scan using tof_designations_des_id_idx on tof_designations designations2  (cost=0.42..8.81 rows=26 width=10) (actual time=0.008..0.016 rows=34 loops=5682)"
"                                                                          Index Cond: (des_id = tof_types.typ_kv_fuel_des_id)"
"                                                              ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts3  (cost=0.43..8.37 rows=1 width=41) (actual time=0.005..0.006 rows=1 loops=5682)"
"                                                                    Index Cond: (tex_id = designations2.des_tex_id)"
"                                                        ->  Index Scan using tof_link_typ_eng_lte_typ_id_idx on tof_link_typ_eng  (cost=0.29..8.23 rows=1 width=8) (actual time=0.370..0.371 rows=1 loops=5682)"
"                                                              Index Cond: (lte_typ_id = tof_types.typ_id)"
"                                                  ->  Index Scan using tof_engines_eng_id_idx on tof_engines  (cost=0.29..8.19 rows=1 width=12) (actual time=0.342..0.342 rows=1 loops=7217)"
"                                                        Index Cond: (eng_id = tof_link_typ_eng.lte_eng_id)"
"                                            ->  Index Scan using tof_designations_des_id_idx on tof_designations designations3  (cost=0.42..8.81 rows=26 width=10) (actual time=0.008..0.016 rows=33 loops=7217)"
"                                                  Index Cond: (des_id = tof_types.typ_kv_body_des_id)"
"                                      ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts4  (cost=0.43..8.37 rows=1 width=41) (actual time=0.008..0.008 rows=1 loops=7217)"
"                                            Index Cond: (tex_id = designations3.des_tex_id)"
"                                ->  Index Scan using tof_designations_des_id_idx on tof_designations designations4  (cost=0.42..8.81 rows=26 width=10) (actual time=0.001..0.001 rows=1 loops=7217)"
"                                      Index Cond: (des_id = tof_types.typ_kv_model_des_id)"
"                          ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts5  (cost=0.43..8.37 rows=1 width=41) (actual time=0.001..0.001 rows=0 loops=7217)"
"                                Index Cond: (tex_id = designations4.des_tex_id)"
"                    ->  Index Scan using tof_designations_des_id_idx on tof_designations designations5  (cost=0.42..8.81 rows=26 width=10) (actual time=0.001..0.001 rows=1 loops=7217)"
"                          Index Cond: (des_id = tof_types.typ_kv_axle_des_id)"
"              ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts6  (cost=0.43..8.37 rows=1 width=41) (actual time=0.001..0.001 rows=0 loops=7217)"
"                    Index Cond: (tex_id = designations5.des_tex_id)"
"Total runtime: 2515331.458 ms"

...

Рейтинг:

0 / 0

05.11.2014, 20:00:27

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Огромная разница по времени выполнения запроса

#38796730

Alexius

Участник

Сообщения: 749

Рейтинг: 0 / 0

sabbath66,

Код: sql

create index on tof_types using btree(typ_id) where SUBSTRING(typ_ctm FROM 249 FOR 1)='1';

такой индекс должен помочь планнеру выбрать более оптимальный план, а не бегать в цикле 150М раз.

...

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05.11.2014, 20:31:36

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Огромная разница по времени выполнения запроса

#38797002

sabbath66

Гость

Спасибо, но увы, не помогло :( ...

...

Рейтинг:

0 / 0

06.11.2014, 10:08:49

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Огромная разница по времени выполнения запроса

#38797016

планы где

Гость

sabbath66Спасибо, но увы, не помогло :( ...а план где ?

да, приведите план analyze и без SET enable-xxx TO OFF; (т.е. после RESET ALL;)

И как -то расставьте везде в связках и т.п. табличные префиксы (алиасы), -- лениво, знаете ли, за вас высчитывать "кто на ком стоял".

(есть идея, что там у вас агрегируется всего одно поле, и можно все прочее прикрутить после агрегирования, а не напрягать планер попусту вариантами.
но читать вашу кашу бесконечно лениво).

если условие 47 (или 73) -- константное -- ещё и условные индесы по нему могут сгодиццо, а где-то еше и по смеси 37 и декомпозиций типа AND SUBSTRING(la_ctm FROM 249 FOR 1)='1' .

...

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06.11.2014, 10:19:23

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Огромная разница по времени выполнения запроса

#38797072

Alexius

Участник

Сообщения: 749

Рейтинг: 0 / 0

sabbath66,

странно. если сильно не вникать в запрос, можно еще посоветовать выкрутить для запроса:

Код: sql

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set join_collapse_limit = 16;
set work_mem = '32MB';

а по-хорошему - нужно, конечно, переписать запрос в более понятном человеку и планировщику виде (используя CTE, подзапросы).

...

Рейтинг:

0 / 0

06.11.2014, 11:15:44

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Огромная разница по времени выполнения запроса

#38797450

sabbath66

Гость

Вот, вроде все расставил...

Запрос:

Код: sql

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SELECT	TYP_ID,	MFA_BRAND,	DES_TEXTS7.TEX_TEXT AS MOD_CDS_TEXT,	
TOF_DES_TEXTS.TEX_TEXT AS TYP_CDS_TEXT,	TYP_PCON_START,	TYP_PCON_END,	
TYP_CCM,	TYP_KW_FROM,	TYP_KW_UPTO,	TYP_HP_FROM,	TYP_HP_UPTO,	
TYP_CYLINDERS,	string_agg(TOF_ENGINES.ENG_CODE, ', '),	
DES_TEXTS2.TEX_TEXT AS TYP_ENGINE_DES_TEXT, 
DES_TEXTS3.TEX_TEXT AS TYP_FUEL_DES_TEXT, 
CASE WHEN DES_TEXTS4.TEX_TEXT IS NULL THEN DES_TEXTS5.TEX_TEXT ELSE DES_TEXTS4.TEX_TEXT END AS TYP_BODY_DES_TEXT, 
DES_TEXTS6.TEX_TEXT AS TYP_AXLE_DES_TEXT, TYP_MAX_WEIGHT 

FROM TOF_LINK_ART 

INNER JOIN TOF_LINK_LA_TYP ON TOF_LINK_LA_TYP.LAT_LA_ID = TOF_LINK_ART.LA_ID AND SUBSTRING(TOF_LINK_LA_TYP.lat_ctm FROM 249 FOR 1)='1'
INNER JOIN TOF_TYPES ON TOF_TYPES.TYP_ID = TOF_LINK_LA_TYP.LAT_TYP_ID AND SUBSTRING(TOF_TYPES.typ_ctm FROM 249 FOR 1)='1' 
INNER JOIN TOF_COUNTRY_DESIGNATIONS ON TOF_COUNTRY_DESIGNATIONS.CDS_ID = TOF_TYPES.TYP_CDS_ID 
INNER JOIN TOF_DES_TEXTS ON TOF_DES_TEXTS.TEX_ID = TOF_COUNTRY_DESIGNATIONS.CDS_TEX_ID 
INNER JOIN TOF_MODELS ON TOF_MODELS.MOD_ID = TOF_TYPES.TYP_MOD_ID 
INNER JOIN TOF_MANUFACTURERS ON TOF_MANUFACTURERS.MFA_ID = TOF_MODELS.MOD_MFA_ID 
INNER JOIN TOF_COUNTRY_DESIGNATIONS AS COUNTRY_DESIGNATIONS2 ON COUNTRY_DESIGNATIONS2.CDS_ID = TOF_MODELS.MOD_CDS_ID AND SUBSTRING(COUNTRY_DESIGNATIONS2.cds_ctm FROM 249 FOR 1)='1' 
INNER JOIN TOF_DES_TEXTS AS DES_TEXTS7 ON DES_TEXTS7.TEX_ID = COUNTRY_DESIGNATIONS2.CDS_TEX_ID 
LEFT JOIN TOF_DESIGNATIONS ON TOF_DESIGNATIONS.DES_ID = TOF_TYPES.TYP_KV_ENGINE_DES_ID 
LEFT JOIN TOF_DES_TEXTS AS DES_TEXTS2 ON DES_TEXTS2.TEX_ID = TOF_DESIGNATIONS.DES_TEX_ID 
LEFT JOIN TOF_DESIGNATIONS AS DESIGNATIONS2 ON DESIGNATIONS2.DES_ID = TOF_TYPES.TYP_KV_FUEL_DES_ID 
LEFT JOIN TOF_DES_TEXTS AS DES_TEXTS3 ON DES_TEXTS3.TEX_ID = DESIGNATIONS2.DES_TEX_ID 
LEFT JOIN TOF_LINK_TYP_ENG ON TOF_LINK_TYP_ENG.LTE_TYP_ID = TOF_TYPES.TYP_ID 
LEFT JOIN TOF_ENGINES ON TOF_ENGINES.ENG_ID = TOF_LINK_TYP_ENG.LTE_ENG_ID 
LEFT JOIN TOF_DESIGNATIONS AS DESIGNATIONS3 ON DESIGNATIONS3.DES_ID = TOF_TYPES.TYP_KV_BODY_DES_ID 
LEFT JOIN TOF_DES_TEXTS AS DES_TEXTS4 ON DES_TEXTS4.TEX_ID = DESIGNATIONS3.DES_TEX_ID 
LEFT JOIN TOF_DESIGNATIONS AS DESIGNATIONS4 ON DESIGNATIONS4.DES_ID = TOF_TYPES.TYP_KV_MODEL_DES_ID 
LEFT JOIN TOF_DES_TEXTS AS DES_TEXTS5 ON DES_TEXTS5.TEX_ID = DESIGNATIONS4.DES_TEX_ID 
LEFT JOIN TOF_DESIGNATIONS AS DESIGNATIONS5 ON DESIGNATIONS5.DES_ID = TOF_TYPES.TYP_KV_AXLE_DES_ID 
LEFT JOIN TOF_DES_TEXTS AS DES_TEXTS6 ON DES_TEXTS6.TEX_ID = DESIGNATIONS5.DES_TEX_ID 

WHERE	LA_ART_ID = 1359385 

AND	TOF_COUNTRY_DESIGNATIONS.CDS_LNG_ID = 37 
AND	COUNTRY_DESIGNATIONS2.CDS_LNG_ID = 37 
AND (TOF_DESIGNATIONS.DES_LNG_ID IS NULL OR TOF_DESIGNATIONS.DES_LNG_ID = 37) 
AND (DESIGNATIONS2.DES_LNG_ID IS NULL OR DESIGNATIONS2.DES_LNG_ID = 37) 
AND (DESIGNATIONS3.DES_LNG_ID IS NULL OR DESIGNATIONS3.DES_LNG_ID = 37) 
AND (DESIGNATIONS4.DES_LNG_ID IS NULL OR DESIGNATIONS4.DES_LNG_ID = 37) 
AND (DESIGNATIONS5.DES_LNG_ID IS NULL OR DESIGNATIONS5.DES_LNG_ID = 37) 
AND SUBSTRING(TOF_LINK_ART.la_ctm FROM 249 FOR 1)='1' 

GROUP BY tof_types.typ_id, tof_manufacturers.mfa_brand, des_texts7.tex_text, tof_des_texts.tex_text, TYP_PCON_START, TYP_PCON_END, TYP_CCM,	TYP_KW_FROM,	TYP_KW_UPTO, TYP_HP_FROM,	TYP_HP_UPTO,	TYP_CYLINDERS , des_texts2.tex_text, des_texts3.tex_text, des_texts4.tex_text, des_texts5.tex_text, des_texts6.tex_text ORDER BY	MFA_BRAND, MOD_CDS_TEXT,	TYP_CDS_TEXT,	TYP_PCON_START,	TYP_CCM

план - быстрый - reset all

Код: sql

"Sort  (cost=2139.17..2139.18 rows=1 width=315) (actual time=5527.235..5533.606 rows=4954 loops=1)"
"  Sort Key: tof_manufacturers.mfa_brand, des_texts7.tex_text, tof_des_texts.tex_text, tof_types.typ_pcon_start, tof_types.typ_ccm"
"  Sort Method: external merge  Disk: 672kB"
"  ->  HashAggregate  (cost=2139.15..2139.16 rows=1 width=315) (actual time=5447.917..5451.501 rows=4954 loops=1)"
"        ->  Nested Loop Left Join  (cost=19.06..2139.11 rows=1 width=315) (actual time=3.523..5405.388 rows=7746 loops=1)"
"              ->  Nested Loop Left Join  (cost=18.63..2130.73 rows=1 width=282) (actual time=3.519..5394.243 rows=7746 loops=1)"
"                    Filter: ((designations5.des_lng_id IS NULL) OR (designations5.des_lng_id = 37))"
"                    Rows Removed by Filter: 4488"
"                    ->  Nested Loop Left Join  (cost=18.21..2121.59 rows=1 width=282) (actual time=3.516..5380.331 rows=7746 loops=1)"
"                          ->  Nested Loop Left Join  (cost=17.78..2113.22 rows=1 width=249) (actual time=3.514..5369.179 rows=7746 loops=1)"
"                                Filter: ((designations4.des_lng_id IS NULL) OR (designations4.des_lng_id = 37))"
"                                Rows Removed by Filter: 4488"
"                                ->  Nested Loop Left Join  (cost=17.35..2104.08 rows=1 width=249) (actual time=3.511..5355.105 rows=7746 loops=1)"
"                                      ->  Nested Loop Left Join  (cost=16.93..2095.70 rows=1 width=216) (actual time=3.495..5315.943 rows=7746 loops=1)"
"                                            Filter: ((designations3.des_lng_id IS NULL) OR (designations3.des_lng_id = 37))"
"                                            Rows Removed by Filter: 251130"
"                                            ->  Nested Loop Left Join  (cost=16.50..2086.56 rows=1 width=216) (actual time=3.475..5171.779 rows=7746 loops=1)"
"                                                  ->  Nested Loop Left Join  (cost=16.21..2078.36 rows=1 width=212) (actual time=3.473..5119.469 rows=7746 loops=1)"
"                                                        ->  Nested Loop Left Join  (cost=15.79..2069.99 rows=1 width=179) (actual time=3.468..5085.841 rows=7746 loops=1)"
"                                                              Filter: ((designations2.des_lng_id IS NULL) OR (designations2.des_lng_id = 37))"
"                                                              Rows Removed by Filter: 255552"
"                                                              ->  Nested Loop Left Join  (cost=15.36..2060.85 rows=1 width=179) (actual time=3.452..4942.330 rows=7746 loops=1)"
"                                                                    ->  Nested Loop Left Join  (cost=15.07..2052.61 rows=1 width=175) (actual time=3.444..4896.245 rows=6154 loops=1)"
"                                                                          ->  Nested Loop Left Join  (cost=14.64..2044.23 rows=1 width=142) (actual time=3.436..4863.874 rows=6154 loops=1)"
"                                                                                Filter: ((tof_designations.des_lng_id IS NULL) OR (tof_designations.des_lng_id = 37))"
"                                                                                Rows Removed by Filter: 203082"
"                                                                                ->  Nested Loop  (cost=14.22..2035.10 rows=1 width=142) (actual time=3.412..4740.554 rows=6154 loops=1)"
"                                                                                      ->  Nested Loop  (cost=13.79..2026.71 rows=1 width=109) (actual time=3.391..4671.321 rows=6154 loops=1)"
"                                                                                            Join Filter: (tof_models.mod_mfa_id = tof_manufacturers.mfa_id)"
"                                                                                            Rows Removed by Join Filter: 3477010"
"                                                                                            ->  Nested Loop  (cost=13.79..2003.97 rows=1 width=102) (actual time=3.348..3653.082 rows=6154 loops=1)"
"                                                                                                  ->  Nested Loop  (cost=13.36..1995.60 rows=1 width=69) (actual time=3.328..3595.294 rows=6154 loops=1)"
"                                                                                                        ->  Nested Loop  (cost=12.93..1985.80 rows=1 width=69) (actual time=2.862..2231.235 rows=6080 loops=1)"
"                                                                                                              ->  Nested Loop  (cost=12.50..1975.76 rows=1 width=69) (actual time=2.518..2004.939 rows=4492 loops=1)"
"                                                                                                                    ->  Nested Loop  (cost=12.21..1967.60 rows=1 width=67) (actual time=2.488..1970.196 rows=4492 loops=1)"
"                                                                                                                          ->  Nested Loop  (cost=11.92..1959.38 rows=1 width=4) (actual time=1.287..400.332 rows=4686 loops=1)"
"                                                                                                                                ->  Index Scan using tof_link_art_la_art_id_idx on tof_link_art  (cost=0.44..405.35 rows=1 width=4) (actual time=0.517..4.395 ro (...)"
"                                                                                                                                      Index Cond: (la_art_id = 1359385)"
"                                                                                                                                      Filter: ("substring"((la_ctm)::"bit", 249, 1) = B'1'::"bit")"
"                                                                                                                                ->  Bitmap Heap Scan on tof_link_la_typ  (cost=11.49..1554.01 rows=2 width=8) (actual time=0.181..0.346 rows=4 loops=1120)"
"                                                                                                                                      Recheck Cond: (lat_la_id = tof_link_art.la_id)"
"                                                                                                                                      Filter: ("substring"((lat_ctm)::"bit", 249, 1) = B'1'::"bit")"
"                                                                                                                                      ->  Bitmap Index Scan on tof_link_la_typ_lat_la_id_idx  (cost=0.00..11.49 rows=389 width=0) (actual time=0.011..0.011 rows (...)"
"                                                                                                                                            Index Cond: (lat_la_id = tof_link_art.la_id)"
"                                                                                                                          ->  Index Scan using tof_types_typ_id249_idx on tof_types  (cost=0.29..8.21 rows=1 width=67) (actual time=0.331..0.332 rows=1 loops=46 (...)"
"                                                                                                                                Index Cond: (typ_id = tof_link_la_typ.lat_typ_id)"
"                                                                                                                    ->  Index Scan using tof_models_mod_id_idx on tof_models  (cost=0.29..8.15 rows=1 width=10) (actual time=0.005..0.006 rows=1 loops=4492)"
"                                                                                                                          Index Cond: (mod_id = tof_types.typ_mod_id)"
"                                                                                                              ->  Index Scan using tof_country_designations_cds_id_idx on tof_country_designations country_designations2  (cost=0.43..10.03 rows=1 width=8) (act (...)"
"                                                                                                                    Index Cond: (cds_id = tof_models.mod_cds_id)"
"                                                                                                                    Filter: ((cds_lng_id = 37) AND ("substring"((cds_ctm)::"bit", 249, 1) = B'1'::"bit"))"
"                                                                                                                    Rows Removed by Filter: 45"
"                                                                                                        ->  Index Scan using tof_country_designations_cds_id_idx on tof_country_designations  (cost=0.43..9.77 rows=2 width=8) (actual time=0.220..0.223 rows=1  (...)"
"                                                                                                              Index Cond: (cds_id = tof_types.typ_cds_id)"
"                                                                                                              Filter: (cds_lng_id = 37)"
"                                                                                                              Rows Removed by Filter: 28"
"                                                                                                  ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts  (cost=0.43..8.37 rows=1 width=41) (actual time=0.007..0.007 rows=1 loops=6154)"
"                                                                                                        Index Cond: (tex_id = tof_country_designations.cds_tex_id)"
"                                                                                            ->  Seq Scan on tof_manufacturers  (cost=0.00..15.66 rows=566 width=11) (actual time=0.003..0.082 rows=566 loops=6154)"
"                                                                                      ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts7  (cost=0.43..8.38 rows=1 width=41) (actual time=0.009..0.010 rows=1 loops=6154)"
"                                                                                            Index Cond: (tex_id = country_designations2.cds_tex_id)"
"                                                                                ->  Index Scan using tof_designations_des_id_idx on tof_designations  (cost=0.42..8.81 rows=26 width=10) (actual time=0.005..0.012 rows=34 loops=6154)"
"                                                                                      Index Cond: (des_id = tof_types.typ_kv_engine_des_id)"
"                                                                          ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts2  (cost=0.43..8.37 rows=1 width=41) (actual time=0.003..0.004 rows=1 loops=6154)"
"                                                                                Index Cond: (tex_id = tof_designations.des_tex_id)"
"                                                                    ->  Index Scan using tof_link_typ_eng_lte_typ_id_idx on tof_link_typ_eng  (cost=0.29..8.23 rows=1 width=8) (actual time=0.005..0.006 rows=1 loops=6154)"
"                                                                          Index Cond: (lte_typ_id = tof_types.typ_id)"
"                                                              ->  Index Scan using tof_designations_des_id_idx on tof_designations designations2  (cost=0.42..8.81 rows=26 width=10) (actual time=0.004..0.011 rows=34 loops=7746)"
"                                                                    Index Cond: (des_id = tof_types.typ_kv_fuel_des_id)"
"                                                        ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts3  (cost=0.43..8.37 rows=1 width=41) (actual time=0.003..0.003 rows=1 loops=7746)"
"                                                              Index Cond: (tex_id = designations2.des_tex_id)"
"                                                  ->  Index Scan using tof_engines_eng_id_idx on tof_engines  (cost=0.29..8.19 rows=1 width=12) (actual time=0.005..0.005 rows=1 loops=7746)"
"                                                        Index Cond: (eng_id = tof_link_typ_eng.lte_eng_id)"
"                                            ->  Index Scan using tof_designations_des_id_idx on tof_designations designations3  (cost=0.42..8.81 rows=26 width=10) (actual time=0.004..0.011 rows=33 loops=7746)"
"                                                  Index Cond: (des_id = tof_types.typ_kv_body_des_id)"
"                                      ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts4  (cost=0.43..8.37 rows=1 width=41) (actual time=0.003..0.004 rows=1 loops=7746)"
"                                            Index Cond: (tex_id = designations3.des_tex_id)"
"                                ->  Index Scan using tof_designations_des_id_idx on tof_designations designations4  (cost=0.42..8.81 rows=26 width=10) (actual time=0.000..0.000 rows=1 loops=7746)"
"                                      Index Cond: (des_id = tof_types.typ_kv_model_des_id)"
"                          ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts5  (cost=0.43..8.37 rows=1 width=41) (actual time=0.000..0.000 rows=0 loops=7746)"
"                                Index Cond: (tex_id = designations4.des_tex_id)"
"                    ->  Index Scan using tof_designations_des_id_idx on tof_designations designations5  (cost=0.42..8.81 rows=26 width=10) (actual time=0.000..0.000 rows=1 loops=7746)"
"                          Index Cond: (des_id = tof_types.typ_kv_axle_des_id)"
"              ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts6  (cost=0.43..8.37 rows=1 width=41) (actual time=0.000..0.000 rows=0 loops=7746)"
"                    Index Cond: (tex_id = designations5.des_tex_id)"
"Total runtime: 5535.936 ms"

план - быстрый - hashjoin off

Код: sql

"Sort  (cost=2139.17..2139.18 rows=1 width=315) (actual time=1749.217..1755.486 rows=4954 loops=1)"
"  Sort Key: tof_manufacturers.mfa_brand, des_texts7.tex_text, tof_des_texts.tex_text, tof_types.typ_pcon_start, tof_types.typ_ccm"
"  Sort Method: external merge  Disk: 672kB"
"  ->  HashAggregate  (cost=2139.15..2139.16 rows=1 width=315) (actual time=1667.610..1671.258 rows=4954 loops=1)"
"        ->  Nested Loop Left Join  (cost=19.06..2139.11 rows=1 width=315) (actual time=0.350..1647.043 rows=7746 loops=1)"
"              ->  Nested Loop Left Join  (cost=18.63..2130.73 rows=1 width=282) (actual time=0.349..1640.651 rows=7746 loops=1)"
"                    Filter: ((designations5.des_lng_id IS NULL) OR (designations5.des_lng_id = 37))"
"                    Rows Removed by Filter: 4488"
"                    ->  Nested Loop Left Join  (cost=18.21..2121.59 rows=1 width=282) (actual time=0.347..1631.989 rows=7746 loops=1)"
"                          ->  Nested Loop Left Join  (cost=17.78..2113.22 rows=1 width=249) (actual time=0.346..1625.592 rows=7746 loops=1)"
"                                Filter: ((designations4.des_lng_id IS NULL) OR (designations4.des_lng_id = 37))"
"                                Rows Removed by Filter: 4488"
"                                ->  Nested Loop Left Join  (cost=17.35..2104.08 rows=1 width=249) (actual time=0.344..1616.541 rows=7746 loops=1)"
"                                      ->  Nested Loop Left Join  (cost=16.93..2095.70 rows=1 width=216) (actual time=0.338..1590.598 rows=7746 loops=1)"
"                                            Filter: ((designations3.des_lng_id IS NULL) OR (designations3.des_lng_id = 37))"
"                                            Rows Removed by Filter: 251130"
"                                            ->  Nested Loop Left Join  (cost=16.50..2086.56 rows=1 width=216) (actual time=0.319..1472.249 rows=7746 loops=1)"
"                                                  ->  Nested Loop Left Join  (cost=16.21..2078.36 rows=1 width=212) (actual time=0.318..1445.136 rows=7746 loops=1)"
"                                                        ->  Nested Loop Left Join  (cost=15.79..2069.99 rows=1 width=179) (actual time=0.314..1421.418 rows=7746 loops=1)"
"                                                              Filter: ((designations2.des_lng_id IS NULL) OR (designations2.des_lng_id = 37))"
"                                                              Rows Removed by Filter: 255552"
"                                                              ->  Nested Loop Left Join  (cost=15.36..2060.85 rows=1 width=179) (actual time=0.301..1301.918 rows=7746 loops=1)"
"                                                                    ->  Nested Loop Left Join  (cost=15.07..2052.61 rows=1 width=175) (actual time=0.294..1279.493 rows=6154 loops=1)"
"                                                                          ->  Nested Loop Left Join  (cost=14.64..2044.23 rows=1 width=142) (actual time=0.288..1260.228 rows=6154 loops=1)"
"                                                                                Filter: ((tof_designations.des_lng_id IS NULL) OR (tof_designations.des_lng_id = 37))"
"                                                                                Rows Removed by Filter: 203082"
"                                                                                ->  Nested Loop  (cost=14.22..2035.10 rows=1 width=142) (actual time=0.266..1165.231 rows=6154 loops=1)"
"                                                                                      ->  Nested Loop  (cost=13.79..2026.71 rows=1 width=109) (actual time=0.260..1141.968 rows=6154 loops=1)"
"                                                                                            Join Filter: (tof_models.mod_mfa_id = tof_manufacturers.mfa_id)"
"                                                                                            Rows Removed by Join Filter: 3477010"
"                                                                                            ->  Nested Loop  (cost=13.79..2003.97 rows=1 width=102) (actual time=0.222..257.127 rows=6154 loops=1)"
"                                                                                                  ->  Nested Loop  (cost=13.36..1995.60 rows=1 width=69) (actual time=0.213..232.934 rows=6154 loops=1)"
"                                                                                                        ->  Nested Loop  (cost=12.93..1985.80 rows=1 width=69) (actual time=0.186..154.096 rows=6080 loops=1)"
"                                                                                                              ->  Nested Loop  (cost=12.50..1975.76 rows=1 width=69) (actual time=0.155..82.574 rows=4492 loops=1)"
"                                                                                                                    ->  Nested Loop  (cost=12.21..1967.60 rows=1 width=67) (actual time=0.148..67.469 rows=4492 loops=1)"
"                                                                                                                          ->  Nested Loop  (cost=11.92..1959.38 rows=1 width=4) (actual time=0.110..44.185 rows=4686 loops=1)"
"                                                                                                                                ->  Index Scan using tof_link_art_la_art_id_idx on tof_link_art  (cost=0.44..405.35 rows=1 width=4) (actual time=0.079..1.375 ro (...)"
"                                                                                                                                      Index Cond: (la_art_id = 1359385)"
"                                                                                                                                      Filter: ("substring"((la_ctm)::"bit", 249, 1) = B'1'::"bit")"
"                                                                                                                                ->  Bitmap Heap Scan on tof_link_la_typ  (cost=11.49..1554.01 rows=2 width=8) (actual time=0.013..0.035 rows=4 loops=1120)"
"                                                                                                                                      Recheck Cond: (lat_la_id = tof_link_art.la_id)"
"                                                                                                                                      Filter: ("substring"((lat_ctm)::"bit", 249, 1) = B'1'::"bit")"
"                                                                                                                                      ->  Bitmap Index Scan on tof_link_la_typ_lat_la_id_idx  (cost=0.00..11.49 rows=389 width=0) (actual time=0.004..0.004 rows (...)"
"                                                                                                                                            Index Cond: (lat_la_id = tof_link_art.la_id)"
"                                                                                                                          ->  Index Scan using tof_types_typ_id249_idx on tof_types  (cost=0.29..8.21 rows=1 width=67) (actual time=0.003..0.004 rows=1 loops=46 (...)"
"                                                                                                                                Index Cond: (typ_id = tof_link_la_typ.lat_typ_id)"
"                                                                                                                    ->  Index Scan using tof_models_mod_id_idx on tof_models  (cost=0.29..8.15 rows=1 width=10) (actual time=0.002..0.002 rows=1 loops=4492)"
"                                                                                                                          Index Cond: (mod_id = tof_types.typ_mod_id)"
"                                                                                                              ->  Index Scan using tof_country_designations_cds_id_idx on tof_country_designations country_designations2  (cost=0.43..10.03 rows=1 width=8) (act (...)"
"                                                                                                                    Index Cond: (cds_id = tof_models.mod_cds_id)"
"                                                                                                                    Filter: ((cds_lng_id = 37) AND ("substring"((cds_ctm)::"bit", 249, 1) = B'1'::"bit"))"
"                                                                                                                    Rows Removed by Filter: 45"
"                                                                                                        ->  Index Scan using tof_country_designations_cds_id_idx on tof_country_designations  (cost=0.43..9.77 rows=2 width=8) (actual time=0.011..0.012 rows=1  (...)"
"                                                                                                              Index Cond: (cds_id = tof_types.typ_cds_id)"
"                                                                                                              Filter: (cds_lng_id = 37)"
"                                                                                                              Rows Removed by Filter: 28"
"                                                                                                  ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts  (cost=0.43..8.37 rows=1 width=41) (actual time=0.003..0.003 rows=1 loops=6154)"
"                                                                                                        Index Cond: (tex_id = tof_country_designations.cds_tex_id)"
"                                                                                            ->  Seq Scan on tof_manufacturers  (cost=0.00..15.66 rows=566 width=11) (actual time=0.001..0.068 rows=566 loops=6154)"
"                                                                                      ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts7  (cost=0.43..8.38 rows=1 width=41) (actual time=0.003..0.003 rows=1 loops=6154)"
"                                                                                            Index Cond: (tex_id = country_designations2.cds_tex_id)"
"                                                                                ->  Index Scan using tof_designations_des_id_idx on tof_designations  (cost=0.42..8.81 rows=26 width=10) (actual time=0.003..0.009 rows=34 loops=6154)"
"                                                                                      Index Cond: (des_id = tof_types.typ_kv_engine_des_id)"
"                                                                          ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts2  (cost=0.43..8.37 rows=1 width=41) (actual time=0.002..0.002 rows=1 loops=6154)"
"                                                                                Index Cond: (tex_id = tof_designations.des_tex_id)"
"                                                                    ->  Index Scan using tof_link_typ_eng_lte_typ_id_idx on tof_link_typ_eng  (cost=0.29..8.23 rows=1 width=8) (actual time=0.002..0.003 rows=1 loops=6154)"
"                                                                          Index Cond: (lte_typ_id = tof_types.typ_id)"
"                                                              ->  Index Scan using tof_designations_des_id_idx on tof_designations designations2  (cost=0.42..8.81 rows=26 width=10) (actual time=0.003..0.009 rows=34 loops=7746)"
"                                                                    Index Cond: (des_id = tof_types.typ_kv_fuel_des_id)"
"                                                        ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts3  (cost=0.43..8.37 rows=1 width=41) (actual time=0.002..0.002 rows=1 loops=7746)"
"                                                              Index Cond: (tex_id = designations2.des_tex_id)"
"                                                  ->  Index Scan using tof_engines_eng_id_idx on tof_engines  (cost=0.29..8.19 rows=1 width=12) (actual time=0.002..0.003 rows=1 loops=7746)"
"                                                        Index Cond: (eng_id = tof_link_typ_eng.lte_eng_id)"
"                                            ->  Index Scan using tof_designations_des_id_idx on tof_designations designations3  (cost=0.42..8.81 rows=26 width=10) (actual time=0.003..0.009 rows=33 loops=7746)"
"                                                  Index Cond: (des_id = tof_types.typ_kv_body_des_id)"
"                                      ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts4  (cost=0.43..8.37 rows=1 width=41) (actual time=0.002..0.003 rows=1 loops=7746)"
"                                            Index Cond: (tex_id = designations3.des_tex_id)"
"                                ->  Index Scan using tof_designations_des_id_idx on tof_designations designations4  (cost=0.42..8.81 rows=26 width=10) (actual time=0.000..0.000 rows=1 loops=7746)"
"                                      Index Cond: (des_id = tof_types.typ_kv_model_des_id)"
"                          ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts5  (cost=0.43..8.37 rows=1 width=41) (actual time=0.000..0.000 rows=0 loops=7746)"
"                                Index Cond: (tex_id = designations4.des_tex_id)"
"                    ->  Index Scan using tof_designations_des_id_idx on tof_designations designations5  (cost=0.42..8.81 rows=26 width=10) (actual time=0.000..0.000 rows=1 loops=7746)"
"                          Index Cond: (des_id = tof_types.typ_kv_axle_des_id)"
"              ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts6  (cost=0.43..8.37 rows=1 width=41) (actual time=0.000..0.000 rows=0 loops=7746)"
"                    Index Cond: (tex_id = designations5.des_tex_id)"
"Total runtime: 1757.845 ms"

план - медленный - reset all

Код: sql

"Sort  (cost=6802.91..6802.92 rows=1 width=315) (actual time=1515801.861..1515808.933 rows=5143 loops=1)"
"  Sort Key: tof_manufacturers.mfa_brand, des_texts7.tex_text, tof_des_texts.tex_text, tof_types.typ_pcon_start, tof_types.typ_ccm"
"  Sort Method: external merge  Disk: 704kB"
"  ->  HashAggregate  (cost=6802.89..6802.90 rows=1 width=315) (actual time=1515714.127..1515717.974 rows=5143 loops=1)"
"        ->  Nested Loop Left Join  (cost=434.03..6802.84 rows=1 width=315) (actual time=8875.764..1515641.176 rows=7217 loops=1)"
"              ->  Nested Loop Left Join  (cost=433.61..6794.47 rows=1 width=282) (actual time=8875.761..1515620.567 rows=7217 loops=1)"
"                    Filter: ((designations5.des_lng_id IS NULL) OR (designations5.des_lng_id = 37))"
"                    Rows Removed by Filter: 4653"
"                    ->  Nested Loop Left Join  (cost=433.18..6785.33 rows=1 width=282) (actual time=8875.756..1515595.210 rows=7217 loops=1)"
"                          ->  Nested Loop Left Join  (cost=432.75..6776.95 rows=1 width=249) (actual time=8875.753..1515576.693 rows=7217 loops=1)"
"                                Filter: ((designations4.des_lng_id IS NULL) OR (designations4.des_lng_id = 37))"
"                                Rows Removed by Filter: 4653"
"                                ->  Nested Loop Left Join  (cost=432.33..6767.82 rows=1 width=249) (actual time=8875.749..1515551.473 rows=7217 loops=1)"
"                                      ->  Nested Loop Left Join  (cost=431.90..6759.44 rows=1 width=216) (actual time=8875.724..1515475.270 rows=7217 loops=1)"
"                                            Filter: ((designations3.des_lng_id IS NULL) OR (designations3.des_lng_id = 37))"
"                                            Rows Removed by Filter: 233508"
"                                            ->  Nested Loop Left Join  (cost=431.48..6750.30 rows=1 width=216) (actual time=8875.677..1515289.474 rows=7217 loops=1)"
"                                                  ->  Nested Loop Left Join  (cost=431.19..6742.10 rows=1 width=212) (actual time=8875.653..1513162.508 rows=7217 loops=1)"
"                                                        ->  Nested Loop Left Join  (cost=430.90..6733.86 rows=1 width=208) (actual time=8875.642..1513084.259 rows=5682 loops=1)"
"                                                              ->  Nested Loop Left Join  (cost=430.47..6725.49 rows=1 width=175) (actual time=8875.623..1513034.014 rows=5682 loops=1)"
"                                                                    Filter: ((designations2.des_lng_id IS NULL) OR (designations2.des_lng_id = 37))"
"                                                                    Rows Removed by Filter: 187440"
"                                                                    ->  Nested Loop Left Join  (cost=430.05..6716.35 rows=1 width=175) (actual time=8875.586..1512888.727 rows=5682 loops=1)"
"                                                                          ->  Nested Loop Left Join  (cost=429.62..6707.97 rows=1 width=142) (actual time=8875.554..1512826.204 rows=5682 loops=1)"
"                                                                                Filter: ((tof_designations.des_lng_id IS NULL) OR (tof_designations.des_lng_id = 37))"
"                                                                                Rows Removed by Filter: 187506"
"                                                                                ->  Nested Loop  (cost=429.19..6698.83 rows=1 width=142) (actual time=8875.484..1512661.694 rows=5682 loops=1)"
"                                                                                      ->  Nested Loop  (cost=428.77..6690.45 rows=1 width=109) (actual time=8874.993..1510657.172 rows=5682 loops=1)"
"                                                                                            ->  Nested Loop  (cost=428.49..6683.54 rows=1 width=102) (actual time=8874.975..1510586.098 rows=5682 loops=1)"
"                                                                                                  ->  Nested Loop  (cost=428.06..6675.16 rows=1 width=69) (actual time=8874.921..1508573.962 rows=5682 loops=1)"
"                                                                                                        ->  Nested Loop  (cost=427.63..6665.37 rows=1 width=69) (actual time=8874.357..1507231.694 rows=5607 loops=1)"
"                                                                                                              ->  Nested Loop  (cost=427.19..6396.59 rows=32 width=73) (actual time=7.791..153103.451 rows=148270092 loops=1)"
"                                                                                                                    ->  Nested Loop  (cost=426.63..4041.69 rows=4 width=69) (actual time=7.756..9224.102 rows=53228 loops=1)"
"                                                                                                                          ->  Hash Join  (cost=426.19..456.03 rows=357 width=69) (actual time=7.301..351.346 rows=47531 loops=1)"
"                                                                                                                                Hash Cond: (tof_types.typ_mod_id = tof_models.mod_id)"
"                                                                                                                                ->  Index Scan using tof_types_typ_id249_idx on tof_types  (cost=0.29..23.43 rows=357 width=67) (actual time=0.018..99.348 rows= (...)"
"                                                                                                                                ->  Hash  (cost=289.29..289.29 rows=10929 width=10) (actual time=7.266..7.266 rows=10929 loops=1)"
"                                                                                                                                      Buckets: 2048  Batches: 1  Memory Usage: 470kB"
"                                                                                                                                      ->  Seq Scan on tof_models  (cost=0.00..289.29 rows=10929 width=10) (actual time=0.006..4.448 rows=10929 loops=1)"
"                                                                                                                          ->  Index Scan using tof_country_designations_cds_id_idx on tof_country_designations country_designations2  (cost=0.43..10.03 rows=1 w (...)"
"                                                                                                                                Index Cond: (cds_id = tof_models.mod_cds_id)"
"                                                                                                                                Filter: ((cds_lng_id = 37) AND ("substring"((cds_ctm)::"bit", 249, 1) = B'1'::"bit"))"
"                                                                                                                                Rows Removed by Filter: 36"
"                                                                                                                    ->  Index Scan using tof_link_la_typ_lat_typ_id_idx on tof_link_la_typ  (cost=0.57..588.35 rows=38 width=8) (actual time=0.076..1.944 rows=2 (...)"
"                                                                                                                          Index Cond: (lat_typ_id = tof_types.typ_id)"
"                                                                                                                          Filter: ("substring"((lat_ctm)::"bit", 249, 1) = B'1'::"bit")"
"                                                                                                                          Rows Removed by Filter: 45"
"                                                                                                              ->  Index Scan using tof_link_art_la_id_idx on tof_link_art  (cost=0.44..8.39 rows=1 width=4) (actual time=0.009..0.009 rows=0 loops=148270092)"
"                                                                                                                    Index Cond: (la_id = tof_link_la_typ.lat_la_id)"
"                                                                                                                    Filter: ((la_art_id = 1359418) AND ("substring"((la_ctm)::"bit", 249, 1) = B'1'::"bit"))"
"                                                                                                                    Rows Removed by Filter: 1"
"                                                                                                        ->  Index Scan using tof_country_designations_cds_id_idx on tof_country_designations  (cost=0.43..9.77 rows=2 width=8) (actual time=0.233..0.236 rows=1  (...)"
"                                                                                                              Index Cond: (cds_id = tof_types.typ_cds_id)"
"                                                                                                              Filter: (cds_lng_id = 37)"
"                                                                                                              Rows Removed by Filter: 28"
"                                                                                                  ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts  (cost=0.43..8.37 rows=1 width=41) (actual time=0.350..0.351 rows=1 loops=5682)"
"                                                                                                        Index Cond: (tex_id = tof_country_designations.cds_tex_id)"
"                                                                                            ->  Index Scan using tof_manufacturers_mfa_id_idx on tof_manufacturers  (cost=0.28..6.90 rows=1 width=11) (actual time=0.009..0.009 rows=1 loops=5682)"
"                                                                                                  Index Cond: (mfa_id = tof_models.mod_mfa_id)"
"                                                                                      ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts7  (cost=0.43..8.38 rows=1 width=41) (actual time=0.350..0.350 rows=1 loops=5682)"
"                                                                                            Index Cond: (tex_id = country_designations2.cds_tex_id)"
"                                                                                ->  Index Scan using tof_designations_des_id_idx on tof_designations  (cost=0.42..8.81 rows=26 width=10) (actual time=0.011..0.019 rows=34 loops=5682)"
"                                                                                      Index Cond: (des_id = tof_types.typ_kv_engine_des_id)"
"                                                                          ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts2  (cost=0.43..8.37 rows=1 width=41) (actual time=0.008..0.009 rows=1 loops=5682)"
"                                                                                Index Cond: (tex_id = tof_designations.des_tex_id)"
"                                                                    ->  Index Scan using tof_designations_des_id_idx on tof_designations designations2  (cost=0.42..8.81 rows=26 width=10) (actual time=0.008..0.017 rows=34 loops=5682)"
"                                                                          Index Cond: (des_id = tof_types.typ_kv_fuel_des_id)"
"                                                              ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts3  (cost=0.43..8.37 rows=1 width=41) (actual time=0.006..0.006 rows=1 loops=5682)"
"                                                                    Index Cond: (tex_id = designations2.des_tex_id)"
"                                                        ->  Index Scan using tof_link_typ_eng_lte_typ_id_idx on tof_link_typ_eng  (cost=0.29..8.23 rows=1 width=8) (actual time=0.010..0.011 rows=1 loops=5682)"
"                                                              Index Cond: (lte_typ_id = tof_types.typ_id)"
"                                                  ->  Index Scan using tof_engines_eng_id_idx on tof_engines  (cost=0.29..8.19 rows=1 width=12) (actual time=0.292..0.292 rows=1 loops=7217)"
"                                                        Index Cond: (eng_id = tof_link_typ_eng.lte_eng_id)"
"                                            ->  Index Scan using tof_designations_des_id_idx on tof_designations designations3  (cost=0.42..8.81 rows=26 width=10) (actual time=0.010..0.017 rows=33 loops=7217)"
"                                                  Index Cond: (des_id = tof_types.typ_kv_body_des_id)"
"                                      ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts4  (cost=0.43..8.37 rows=1 width=41) (actual time=0.008..0.008 rows=1 loops=7217)"
"                                            Index Cond: (tex_id = designations3.des_tex_id)"
"                                ->  Index Scan using tof_designations_des_id_idx on tof_designations designations4  (cost=0.42..8.81 rows=26 width=10) (actual time=0.001..0.001 rows=1 loops=7217)"
"                                      Index Cond: (des_id = tof_types.typ_kv_model_des_id)"
"                          ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts5  (cost=0.43..8.37 rows=1 width=41) (actual time=0.001..0.001 rows=0 loops=7217)"
"                                Index Cond: (tex_id = designations4.des_tex_id)"
"                    ->  Index Scan using tof_designations_des_id_idx on tof_designations designations5  (cost=0.42..8.81 rows=26 width=10) (actual time=0.001..0.001 rows=1 loops=7217)"
"                          Index Cond: (des_id = tof_types.typ_kv_axle_des_id)"
"              ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts6  (cost=0.43..8.37 rows=1 width=41) (actual time=0.001..0.001 rows=0 loops=7217)"
"                    Index Cond: (tex_id = designations5.des_tex_id)"
"Total runtime: 1515812.246 ms"

план - медленный - hashjoin off

Код: sql

"Sort  (cost=6893.35..6893.35 rows=1 width=315) (actual time=1984001.322..1984008.582 rows=5143 loops=1)"
"  Sort Key: tof_manufacturers.mfa_brand, des_texts7.tex_text, tof_des_texts.tex_text, tof_types.typ_pcon_start, tof_types.typ_ccm"
"  Sort Method: external merge  Disk: 704kB"
"  ->  HashAggregate  (cost=6893.33..6893.34 rows=1 width=315) (actual time=1983915.546..1983919.349 rows=5143 loops=1)"
"        ->  Nested Loop Left Join  (cost=46.69..6893.28 rows=1 width=315) (actual time=30677.904..1983842.659 rows=7217 loops=1)"
"              ->  Nested Loop Left Join  (cost=46.26..6884.90 rows=1 width=282) (actual time=30677.899..1983818.462 rows=7217 loops=1)"
"                    Filter: ((designations5.des_lng_id IS NULL) OR (designations5.des_lng_id = 37))"
"                    Rows Removed by Filter: 4653"
"                    ->  Nested Loop Left Join  (cost=45.84..6875.77 rows=1 width=282) (actual time=30677.894..1983794.018 rows=7217 loops=1)"
"                          ->  Nested Loop Left Join  (cost=45.41..6867.39 rows=1 width=249) (actual time=30677.889..1983773.815 rows=7217 loops=1)"
"                                Filter: ((designations4.des_lng_id IS NULL) OR (designations4.des_lng_id = 37))"
"                                Rows Removed by Filter: 4653"
"                                ->  Nested Loop Left Join  (cost=44.99..6858.25 rows=1 width=249) (actual time=30677.882..1983746.966 rows=7217 loops=1)"
"                                      ->  Nested Loop Left Join  (cost=44.56..6849.88 rows=1 width=216) (actual time=30677.843..1983681.855 rows=7217 loops=1)"
"                                            Filter: ((designations3.des_lng_id IS NULL) OR (designations3.des_lng_id = 37))"
"                                            Rows Removed by Filter: 233508"
"                                            ->  Nested Loop Left Join  (cost=44.13..6840.74 rows=1 width=216) (actual time=30677.743..1983511.102 rows=7217 loops=1)"
"                                                  ->  Nested Loop Left Join  (cost=43.85..6832.54 rows=1 width=212) (actual time=30677.691..1981988.618 rows=7217 loops=1)"
"                                                        ->  Nested Loop Left Join  (cost=43.56..6824.30 rows=1 width=208) (actual time=30677.641..1980786.668 rows=5682 loops=1)"
"                                                              ->  Nested Loop Left Join  (cost=43.13..6815.92 rows=1 width=175) (actual time=30677.603..1980743.118 rows=5682 loops=1)"
"                                                                    Filter: ((designations2.des_lng_id IS NULL) OR (designations2.des_lng_id = 37))"
"                                                                    Rows Removed by Filter: 187440"
"                                                                    ->  Nested Loop Left Join  (cost=42.70..6806.78 rows=1 width=175) (actual time=30677.502..1980605.362 rows=5682 loops=1)"
"                                                                          ->  Nested Loop Left Join  (cost=42.28..6798.41 rows=1 width=142) (actual time=30677.450..1980549.274 rows=5682 loops=1)"
"                                                                                Filter: ((tof_designations.des_lng_id IS NULL) OR (tof_designations.des_lng_id = 37))"
"                                                                                Rows Removed by Filter: 187506"
"                                                                                ->  Nested Loop  (cost=41.85..6789.27 rows=1 width=142) (actual time=30677.319..1980390.236 rows=5682 loops=1)"
"                                                                                      ->  Nested Loop  (cost=41.42..6780.88 rows=1 width=109) (actual time=30677.268..1978805.586 rows=5682 loops=1)"
"                                                                                            ->  Nested Loop  (cost=41.15..6773.98 rows=1 width=102) (actual time=30677.215..1978746.608 rows=5682 loops=1)"
"                                                                                                  ->  Nested Loop  (cost=40.72..6765.60 rows=1 width=69) (actual time=30677.145..1978147.760 rows=5682 loops=1)"
"                                                                                                        ->  Nested Loop  (cost=40.29..6755.81 rows=1 width=69) (actual time=30677.061..1976006.452 rows=5607 loops=1)"
"                                                                                                              ->  Nested Loop  (cost=39.85..6487.03 rows=32 width=73) (actual time=132.966..191097.416 rows=148270092 loops=1)"
"                                                                                                                    ->  Nested Loop  (cost=39.28..4132.13 rows=4 width=69) (actual time=132.302..2067.061 rows=53228 loops=1)"
"                                                                                                                          ->  Merge Join  (cost=38.85..546.46 rows=357 width=69) (actual time=132.225..479.362 rows=47531 loops=1)"
"                                                                                                                                Merge Cond: (tof_models.mod_id = tof_types.typ_mod_id)"
"                                                                                                                                ->  Index Scan using tof_models_mod_id_idx on tof_models  (cost=0.29..475.22 rows=10929 width=10) (actual time=0.015..21.466 row (...)"
"                                                                                                                                ->  Sort  (cost=38.57..39.46 rows=357 width=67) (actual time=132.199..295.242 rows=47531 loops=1)"
"                                                                                                                                      Sort Key: tof_types.typ_mod_id"
"                                                                                                                                      Sort Method: external sort  Disk: 3304kB"
"                                                                                                                                      ->  Index Scan using tof_types_typ_id249_idx on tof_types  (cost=0.29..23.43 rows=357 width=67) (actual time=0.012..51.666 (...)"
"                                                                                                                          ->  Index Scan using tof_country_designations_cds_id_idx on tof_country_designations country_designations2  (cost=0.43..10.03 rows=1 w (...)"
"                                                                                                                                Index Cond: (cds_id = tof_models.mod_cds_id)"
"                                                                                                                                Filter: ((cds_lng_id = 37) AND ("substring"((cds_ctm)::"bit", 249, 1) = B'1'::"bit"))"
"                                                                                                                                Rows Removed by Filter: 36"
"                                                                                                                    ->  Index Scan using tof_link_la_typ_lat_typ_id_idx on tof_link_la_typ  (cost=0.57..588.35 rows=38 width=8) (actual time=0.648..2.796 rows=2 (...)"
"                                                                                                                          Index Cond: (lat_typ_id = tof_types.typ_id)"
"                                                                                                                          Filter: ("substring"((lat_ctm)::"bit", 249, 1) = B'1'::"bit")"
"                                                                                                                          Rows Removed by Filter: 45"
"                                                                                                              ->  Index Scan using tof_link_art_la_id_idx on tof_link_art  (cost=0.44..8.39 rows=1 width=4) (actual time=0.012..0.012 rows=0 loops=148270092)"
"                                                                                                                    Index Cond: (la_id = tof_link_la_typ.lat_la_id)"
"                                                                                                                    Filter: ((la_art_id = 1359418) AND ("substring"((la_ctm)::"bit", 249, 1) = B'1'::"bit"))"
"                                                                                                                    Rows Removed by Filter: 1"
"                                                                                                        ->  Index Scan using tof_country_designations_cds_id_idx on tof_country_designations  (cost=0.43..9.77 rows=2 width=8) (actual time=0.375..0.379 rows=1  (...)"
"                                                                                                              Index Cond: (cds_id = tof_types.typ_cds_id)"
"                                                                                                              Filter: (cds_lng_id = 37)"
"                                                                                                              Rows Removed by Filter: 28"
"                                                                                                  ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts  (cost=0.43..8.37 rows=1 width=41) (actual time=0.101..0.101 rows=1 loops=5682)"
"                                                                                                        Index Cond: (tex_id = tof_country_designations.cds_tex_id)"
"                                                                                            ->  Index Scan using tof_manufacturers_mfa_id_idx on tof_manufacturers  (cost=0.28..6.90 rows=1 width=11) (actual time=0.007..0.007 rows=1 loops=5682)"
"                                                                                                  Index Cond: (mfa_id = tof_models.mod_mfa_id)"
"                                                                                      ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts7  (cost=0.43..8.38 rows=1 width=41) (actual time=0.276..0.276 rows=1 loops=5682)"
"                                                                                            Index Cond: (tex_id = country_designations2.cds_tex_id)"
"                                                                                ->  Index Scan using tof_designations_des_id_idx on tof_designations  (cost=0.42..8.81 rows=26 width=10) (actual time=0.010..0.018 rows=34 loops=5682)"
"                                                                                      Index Cond: (des_id = tof_types.typ_kv_engine_des_id)"
"                                                                          ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts2  (cost=0.43..8.37 rows=1 width=41) (actual time=0.007..0.007 rows=1 loops=5682)"
"                                                                                Index Cond: (tex_id = tof_designations.des_tex_id)"
"                                                                    ->  Index Scan using tof_designations_des_id_idx on tof_designations designations2  (cost=0.42..8.81 rows=26 width=10) (actual time=0.007..0.015 rows=34 loops=5682)"
"                                                                          Index Cond: (des_id = tof_types.typ_kv_fuel_des_id)"
"                                                              ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts3  (cost=0.43..8.37 rows=1 width=41) (actual time=0.005..0.005 rows=1 loops=5682)"
"                                                                    Index Cond: (tex_id = designations2.des_tex_id)"
"                                                        ->  Index Scan using tof_link_typ_eng_lte_typ_id_idx on tof_link_typ_eng  (cost=0.29..8.23 rows=1 width=8) (actual time=0.207..0.208 rows=1 loops=5682)"
"                                                              Index Cond: (lte_typ_id = tof_types.typ_id)"
"                                                  ->  Index Scan using tof_engines_eng_id_idx on tof_engines  (cost=0.29..8.19 rows=1 width=12) (actual time=0.208..0.208 rows=1 loops=7217)"
"                                                        Index Cond: (eng_id = tof_link_typ_eng.lte_eng_id)"
"                                            ->  Index Scan using tof_designations_des_id_idx on tof_designations designations3  (cost=0.42..8.81 rows=26 width=10) (actual time=0.008..0.015 rows=33 loops=7217)"
"                                                  Index Cond: (des_id = tof_types.typ_kv_body_des_id)"
"                                      ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts4  (cost=0.43..8.37 rows=1 width=41) (actual time=0.006..0.007 rows=1 loops=7217)"
"                                            Index Cond: (tex_id = designations3.des_tex_id)"
"                                ->  Index Scan using tof_designations_des_id_idx on tof_designations designations4  (cost=0.42..8.81 rows=26 width=10) (actual time=0.001..0.001 rows=1 loops=7217)"
"                                      Index Cond: (des_id = tof_types.typ_kv_model_des_id)"
"                          ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts5  (cost=0.43..8.37 rows=1 width=41) (actual time=0.001..0.001 rows=0 loops=7217)"
"                                Index Cond: (tex_id = designations4.des_tex_id)"
"                    ->  Index Scan using tof_designations_des_id_idx on tof_designations designations5  (cost=0.42..8.81 rows=26 width=10) (actual time=0.001..0.001 rows=1 loops=7217)"
"                          Index Cond: (des_id = tof_types.typ_kv_axle_des_id)"
"              ->  Index Scan using tof_des_texts_tex_id_idx on tof_des_texts des_texts6  (cost=0.43..8.37 rows=1 width=41) (actual time=0.001..0.001 rows=0 loops=7217)"
"                    Index Cond: (tex_id = designations5.des_tex_id)"
"Total runtime: 1984014.096 ms"

Alexius
>>а по-хорошему - нужно, конечно, переписать запрос в более понятном человеку и планировщику виде (используя CTE, подзапросы).

Да в принципе запрос нормально работает в 99.99% случаев уже больше года, исполняясь сотни раз в день, такие тормоза - единичны, но все-таки иногда напрягают. А насчет переписать - тут еще подучиться надо ;)

З.Ы.

Код: sql

1.
2.

set join_collapse_limit = 16;
set work_mem = '32MB';

Тоже не помогло...

...

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06.11.2014, 16:09:18

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Огромная разница по времени выполнения запроса

#38797522

vyegorov

Участник

Откуда: Баньоло-ин-Пьяно

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sabbath66,

Что-то со статистиками.

Для быстро запроса ошибка по записям где-то в районе 4-8 тысяч, что в вашем случае не критично:

Код: sql

Nested Loop (cost=12.21..1,967.60 rows=1 width=67) (actual time=2.488..1,970.196 rows=4,492 loops=1)

Для медленного ошибка очень большая:

Код: sql

Nested Loop (cost=426.63..4,041.69 rows=4 width=69) (actual time=7.756..9,224.102 rows=53,228 loops=1)

1. Какая версия Postgres?
2. Включен ли autovacuum? `SELECT name,setting FROM pg_settings WHERE name ~ 'autovacuum';`
3. Как настроена база? `SELECT name,setting FROM pg_settings WHERE source NOT IN ('default','override');`
4. Как давно анализировались/vacuum-ировались таблицы из запроса? `SELECT * FROM pg_stat_user_tables WHERE relname ~ '^tof';`

...

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06.11.2014, 17:00:42

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Огромная разница по времени выполнения запроса

#38797553

планы где

Гость

vyegorov,

там у него по 150 000 000 loops-ов кое-где (кстати выводит планы скорее всего в пгадмине, а длина текстового поля ограничена примерно 255 -- самого интересного кое-где и не видно).

ну и читать исходный запрос -- не подарок.

...

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06.11.2014, 17:19:19

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Форумы / PostgreSQL [игнор отключен] [закрыт для гостей] / Огромная разница по времени выполнения запроса

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