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Как создать partition по полю date, который автоматически создаст партиции по неделе?
#39560240
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Откуда: Middlebury, CT USA
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andrey_anonymous*если мера поступления ориентирована в хронологическом порядке :)
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SQL> create table
2 pos_data (
3 start_date DATE,
4 store_id NUMBER,
5 inventory_id NUMBER(6),
6 qty_sold NUMBER(3)
7 )
8 PARTITION BY RANGE (start_date)
9 INTERVAL(NUMTOYMINTERVAL(1, 'MONTH'))
10 (
11 PARTITION pos_data_p2 VALUES LESS THAN (TO_DATE('1-7-2007', 'DD-MM-YYYY')),
12 PARTITION pos_data_p3 VALUES LESS THAN (TO_DATE('1-8-2007', 'DD-MM-YYYY'))
13 );
Table created.
SQL> select partition_name,high_value from user_tab_partitions where table_name = 'POS_DATA';
PARTITION_NAME HIGH_VALUE
-------------------- --------------------------------------------------------------------------------
POS_DATA_P2 TO_DATE(' 2007-07-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
POS_DATA_P3 TO_DATE(' 2007-08-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
SQL> insert into pos_data values(date '2020-01-01',1,1,1);
1 row created.
SQL> select partition_name,high_value from user_tab_partitions where table_name = 'POS_DATA';
PARTITION_NAME HIGH_VALUE
-------------------- --------------------------------------------------------------------------------
POS_DATA_P2 TO_DATE(' 2007-07-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
POS_DATA_P3 TO_DATE(' 2007-08-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
SYS_P3165 TO_DATE(' 2020-02-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
SQL> insert into pos_data values(date '2019-01-01',1,1,1);
1 row created.
SQL> select partition_name,high_value from user_tab_partitions where table_name = 'POS_DATA';
PARTITION_NAME HIGH_VALUE
-------------------- --------------------------------------------------------------------------------
POS_DATA_P2 TO_DATE(' 2007-07-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
POS_DATA_P3 TO_DATE(' 2007-08-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
SYS_P3165 TO_DATE(' 2020-02-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
SYS_P3166 TO_DATE(' 2019-02-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
SQL> insert into pos_data values(date '2018-01-01',1,1,1);
1 row created.
SQL> select partition_name,high_value from user_tab_partitions where table_name = 'POS_DATA';
PARTITION_NAME HIGH_VALUE
-------------------- --------------------------------------------------------------------------------
POS_DATA_P2 TO_DATE(' 2007-07-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
POS_DATA_P3 TO_DATE(' 2007-08-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
SYS_P3165 TO_DATE(' 2020-02-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
SYS_P3166 TO_DATE(' 2019-02-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
SYS_P3167 TO_DATE(' 2018-02-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
SQL> insert into pos_data values(date '2025-01-01',1,1,1);
1 row created.
SQL> select partition_name,high_value from user_tab_partitions where table_name = 'POS_DATA';
PARTITION_NAME HIGH_VALUE
-------------------- --------------------------------------------------------------------------------
POS_DATA_P2 TO_DATE(' 2007-07-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
POS_DATA_P3 TO_DATE(' 2007-08-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
SYS_P3165 TO_DATE(' 2020-02-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
SYS_P3166 TO_DATE(' 2019-02-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
SYS_P3167 TO_DATE(' 2018-02-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
SYS_P3168 TO_DATE(' 2025-02-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIA
6 rows selected.
SQL>
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