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помогите решить задания, есть таблица нужно выполнить sql запросы (задания внизу)
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noname_2222
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# создание таблиц
CREATE DATABASE IF NOT EXISTS study_database;
USE study_database;
# создание таблиц
CREATE TABLE brands (
id int(11) NOT NULL AUTO_INCREMENT,
brand varchar(45) NOT NULL,
PRIMARY KEY (id)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

CREATE TABLE categories (
id int(11) NOT NULL AUTO_INCREMENT,
category varchar(45) NOT NULL DEFAULT 'name category',
description varchar(100) DEFAULT NULL,
PRIMARY KEY (id),
UNIQUE KEY category_UNIQUE (category)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

CREATE TABLE suppliers (
id INT NOT NULL AUTO_INCREMENT,
supplier VARCHAR(50) NOT NULL,
address VARCHAR(50),
contacts VARCHAR(50),
PRIMARY KEY (id)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

CREATE TABLE products (
id int(11) NOT NULL AUTO_INCREMENT,
category_id int(11) NOT NULL,
brand_id int(11) DEFAULT NULL,
product varchar(45) NOT NULL,
price decimal(10,2) DEFAULT '0.00',
description varchar(100) DEFAULT NULL,
PRIMARY KEY (id),
KEY FK_category_idx (category_id),
KEY FK_brand_idx (brand_id),
CONSTRAINT FK_brand FOREIGN KEY (brand_id) REFERENCES brands (id) ON UPDATE CASCADE,
CONSTRAINT FK_category FOREIGN KEY (category_id) REFERENCES categories (id) ON UPDATE CASCADE
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

CREATE TABLE actions (
id int(11) NOT NULL AUTO_INCREMENT,
action_date datetime NOT NULL,
product_id int(11) NOT NULL,
supplier_id int(11) NOT NULL,
qty decimal(10,3) NOT NULL DEFAULT '0.000',
price decimal(10,2) NOT NULL DEFAULT '0.00',
PRIMARY KEY (id),
INDEX FK_product_idx (product_id),
CONSTRAINT FK_product FOREIGN KEY (product_id) REFERENCES products (id),
CONSTRAINT FK_supplier FOREIGN KEY (supplier_id) REFERENCES suppliers (id)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

# Вставка категорий товаров
INSERT INTO categories (category, description) VALUES ('HDD', 'Жесткие диски');
INSERT INTO categories (category, description) VALUES ('Monitors', 'Мониторы');
INSERT INTO categories (category, description) VALUES ('Motherboards', 'Материнские платы');
INSERT INTO categories (category, description) VALUES ('DDR', 'Оперативная память');
#INSERT INTO categories (category, description) VALUES ('Smartphones', 'Смартфоны');

# Вставка брендов
INSERT INTO brands (brand) VALUES ('Samsung');
INSERT INTO brands (brand) VALUES ('ASUS');
INSERT INTO brands (brand) VALUES ('Acer');

# Вставка поставщиков
INSERT INTO suppliers (supplier, address, contacts) VALUES ('Silk Road','Shanghai 6-7/115','mr.Lee p:234-177-123-456-6');
INSERT INTO suppliers (supplier, address, contacts) VALUES ('Cargo Transfer','Shanghai, Mao av. 899-1201', Null);
INSERT INTO suppliers (supplier, address, contacts) VALUES ('4U','Urumchi','');
INSERT INTO suppliers (supplier, address, contacts) VALUES ('IDT','Beijing','');

# Вставка товара 1
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='HDD'),
(SELECT id FROM brands where brand='Samsung'),
'S1 HDD 1T, 7200 rpm', 125, '');
# Вставка товара 2
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='HDD'),
(SELECT id FROM brands where brand='Samsung'),
'S2 HDD 500Gb, 7200 rpm', 85, '');
# Вставка товара 3
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='HDD'),
(SELECT id FROM brands where brand='Samsung'),
'S3 HDD 250Gb, 10000 rpm', 150, '');
# Вставка товара 4
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='HDD'),
(SELECT id FROM brands where brand='Samsung'),
'S4 HDD 1T, 7200rpm', 127, '');
# Вставка товара 5
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='HDD'),
(SELECT id FROM brands where brand='Samsung'),
'S5 HDD 500Gb, 7200rpm', 92, '');
# Вставка товара 6
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='HDD'),
(SELECT id FROM brands where brand='Acer'),
'Z1 HDD 750Gb, 72000rpm', 100, '');
# Вставка товара 7
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='HDD'),
(SELECT id FROM brands where brand='Acer'),
'Z2 HDD 750Gb, 72000rpm', 110, '');
# Вставка товара 8
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='HDD'),
NULL, 'UN1 HDD 750Gb, 72000rpm', 105, '');
# Вставка товара 9
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='Monitors'),
(SELECT id FROM brands where brand='Samsung'),
'Monitor B19', 135, '');
# Вставка товара 10
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='Monitors'),
(SELECT id FROM brands where brand='Samsung'),
'Monitor B22', 170, '');
# Вставка товара 11
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='Monitors'),
(SELECT id FROM brands where brand='Samsung'),
'Monitor B25', 320, '');
# Вставка товара 12
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='Monitors'),
(SELECT id FROM brands where brand='Acer'),
'Monitor A20', 150, '');
# Вставка товара 13
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='Monitors'),
(SELECT id FROM brands where brand='Acer'),
'Monitor A21', 170, '');
# Вставка товара 14
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='Monitors'),
(SELECT id FROM brands where brand='ASUS'),
'Monitor DD27', 370, '');
# Вставка товара 15
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='DDR'),
(SELECT id FROM brands where brand='Samsung'),
'DDR3 SST 2Gb', 25, '');
# Вставка товара 16
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='DDR'),
(SELECT id FROM brands where brand='Samsung'),
'DDR3 SST 4Gb', 42, '');
# Вставка товара 17
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='DDR'),
(SELECT id FROM brands where brand='ASUS'),
'DDR3 BTT 4Gb', 48, '');
# Вставка товара 18
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='DDR'),
(SELECT id FROM brands where brand='ASUS'),
'DDR3 BTT 8Gb', 90, '');
# Вставка товара 19
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='DDR'),
(SELECT id FROM brands where brand='ASUS'),
'DDR3 ZPP 4Gb', 45, '');
# Вставка товара 20
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='DDR'),
NULL,'DDR3 UNK 2Gb', 24, '');
# Вставка товара 21
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='DDR'),
NULL,'DDR2 UNK 1Gb', 17, '');
# Вставка товара 22
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='Motherboards'),
(SELECT id FROM brands where brand='Samsung'),
'MB-1', 75, '');
# Вставка товара 23
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='Motherboards'),
(SELECT id FROM brands where brand='Samsung'),
'MB-2', 76, '');
# Вставка товара 24
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='Motherboards'),
(SELECT id FROM brands where brand='ASUS'),
'MB-3', 80, '');
# Вставка товара 25
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='Motherboards'),
(SELECT id FROM brands where brand='ASUS'),
'MB-4', 95, '');
# Вставка товара 26
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='Motherboards'),
(SELECT id FROM brands where brand='ASUS'),
'MB-5', 160, '');
# Вставка товара 27
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='Motherboards'),
(SELECT id FROM brands where brand='Acer'),
'MB-6', 180, '');
# Вставка товара 28
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='Motherboards'),
(SELECT id FROM brands where brand='Acer'),
'MB-7', 200, '');
# Вставка товара 29
INSERT INTO products (category_id, brand_id, product, price, description)
VALUES ((SELECT id FROM categories where category='Motherboards'),
NULL, 'MB-8', 250, '');

# Silk Road
#Вставка поступлений товара actions 1
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-25 12:30:33',
(select id from products where product='S3 HDD 250Gb, 10000 rpm'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
100, # qty
110);
#Вставка поступлений товара actions 2
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-25 12:30:33',
(select id from products where product='S5 HDD 500Gb, 7200rpm'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
80, # qty
95);
#Вставка поступлений товара actions 3
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-25 12:30:33',
(select id from products where product='UN1 HDD 750Gb, 72000rpm'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
48, # qty
84);
#Вставка поступлений товара actions 4
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-25 12:30:33',
(select id from products where product='Monitor B25'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
16, # qty
340);
#Вставка поступлений товара actions 5
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-30 09:30:00',
(select id from products where product='Monitor B25'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
10, # qty
345);
#Вставка поступлений товара actions 6
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-30 09:30:00',
(select id from products where product='DDR3 SST 2Gb'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
50, # qty
40);
#Вставка поступлений товара actions 7
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-30 09:30:00',
(select id from products where product='DDR3 SST 4Gb'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
40, # qty
55);
#Вставка поступлений товара actions 8
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-14 15:30:00',
(select id from products where product='DDR3 BTT 4Gb'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
50, # qty
60);
#Вставка поступлений товара actions 9
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-14 15:30:00',
(select id from products where product='S5 HDD 500Gb, 7200rpm'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
50, # qty
98);
#Вставка поступлений товара actions 10
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-20 10:05:00',
(select id from products where product='Monitor DD27'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
10, # qty
330);
#13.02.2017
#Вставка поступлений товара actions 11
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-25 12:15:00',
(select id from products where product='S3 HDD 250Gb, 10000 rpm'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
50, # qty
115);
#Вставка поступлений товара actions 12
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-25 12:15:00',
(select id from products where product='DDR3 BTT 4Gb'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
15, # qty
86);
#Вставка поступлений товара actions 13
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-25 12:15:00',
(select id from products where product='S4 HDD 1T, 7200rpm'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
25, # qty
117);
#Вставка поступлений товара actions 14
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-25 14:33:00',
(select id from products where product='S4 HDD 1T, 7200rpm'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
25, # qty
117);
#Вставка поступлений товара actions 15
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-10-04 12:50:00',
(select id from products where product='S1 HDD 1T, 7200 rpm'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
30, # qty
121);
#Вставка поступлений товара actions 16
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-10-27 09:18:00',
(select id from products where product='S4 HDD 1T, 7200rpm'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
5, # qty
125);
#Вставка поступлений товара actions 17
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-12-11 09:20:00',
(select id from products where product='S3 HDD 250Gb, 10000 rpm'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
10, # qty
143);
#Вставка поступлений товара actions 18
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-02-07 09:43:00',
(select id from products where product='DDR3 BTT 4Gb'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
51, # qty
43);
#Вставка поступлений товара actions 19
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-03-12 09:21:00',
(select id from products where product='DDR3 SST 2Gb'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
70, # qty
18);
#Вставка поступлений товара actions 20
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-06-28 08:55:00',
(select id from products where product='DDR3 SST 4Gb'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
35, # qty
36);
#Вставка поступлений товара actions 21
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-07-15 10:02:00',
(select id from products where product='Monitor A20'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
20, # qty
135);
#Вставка поступлений товара actions 22
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-07-16 09:57:00',
(select id from products where product='S1 HDD 1T, 7200 rpm'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
45, # qty
116);
#Вставка поступлений товара actions 23
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-09-15 09:15:00',
(select id from products where product='Monitor A20'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
5, # qty
142);
#Вставка поступлений товара actions 24
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-09-20 10:03:00',
(select id from products where product='S2 HDD 500Gb, 7200 rpm'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
13, # qty
74);
#Вставка поступлений товара actions 25
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-10-02 11:10:00',
(select id from products where product='Monitor B19'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
24, # qty
121);
#Вставка поступлений товара actions 26
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-10-23 10:02:00',
(select id from products where product='DDR3 BTT 8Gb'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
55, # qty
79);
#Вставка поступлений товара actions 27
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-10-23 10:03:00',
(select id from products where product='Monitor B25'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
6, # qty
295);
#Вставка поступлений товара actions 28
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-10-23 10:04:00',
(select id from products where product='S4 HDD 1T, 7200rpm'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
100, # qty
108);
#Вставка поступлений товара actions 29
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-11-11 09:44:00',
(select id from products where product='DDR3 ZPP 4Gb'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
75, # qty
31);
#Вставка поступлений товара actions 30
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-12-17 11:00:00',
(select id from products where product='DDR3 BTT 8Gb'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
20, # qty
77);
#Вставка поступлений товара actions 31
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-12-20 08:50:00',
(select id from products where product='DDR3 BTT 4Gb'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
12, # qty
40);
#Вставка поступлений товара actions 32
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-01-12 11:01:00',
(select id from products where product='Monitor DD27'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
10, # qty
340);
#Вставка поступлений товара actions 33
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-01-12 11:02:00',
(select id from products where product='DDR3 BTT 8Gb'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
25, # qty
76);
#Вставка поступлений товара actions 34
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-01-12 11:03:00 ',
(select id from products where product='S1 HDD 1T, 7200 rpm'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
37, # qty
115);
#Вставка поступлений товара actions 35
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-02-25 13:50:00',
(select id from products where product='S3 HDD 250Gb, 10000 rpm'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
50, # qty
128);
#Вставка поступлений товара actions 36
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-02-26 09:30:00',
(select id from products where product='Monitor B25'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
19, # qty
302);
#Вставка поступлений товара actions 37
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-02-27 09:36:00',
(select id from products where product='S4 HDD 1T, 7200rpm'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
11, # qty
119);
#Вставка поступлений товара actions 38
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-03-02 09:44:00',
(select id from products where product='S5 HDD 500Gb, 7200rpm'), # product
(select id from suppliers where supplier='Silk Road'), # supplier
40, # qty
80);

#Cargo Transfer
#Вставка поступлений товара actions 39
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-26 08:30:00',
(select id from products where product='MB-1'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
25, # qty
76);
#Вставка поступлений товара actions 40
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-26 08:30:00',
(select id from products where product='MB-2'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
15, # qty
79);
#Вставка поступлений товара actions 41
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-26 08:30:00',
(select id from products where product='MB-3'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
20, # qty
85);
#Вставка поступлений товара actions 42
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-26 08:30:00',
(select id from products where product='MB-4'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
23, # qty
88);
#Вставка поступлений товара actions 43
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-26 08:30:00',
(select id from products where product='MB-5'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
10, # qty
94);
#Вставка поступлений товара actions 44
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-28 08:45:00',
(select id from products where product='MB-2'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
10, # qty
79);
#Вставка поступлений товара actions 45
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-28 08:45:00',
(select id from products where product='MB-4'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
7, # qty
89);
#Вставка поступлений товара actions 46
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-07 08:45:00',
(select id from products where product='MB-1'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
30, # qty
76);
#Вставка поступлений товара actions 47
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-07 08:45:00',
(select id from products where product='S3 HDD 250Gb, 10000 rpm'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
24, # qty
105);
#Вставка поступлений товара actions 48
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-13 11:12:00',
(select id from products where product='MB-1'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
10, # qty
75);
#Вставка поступлений товара actions 49
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-13 11:12:00',
(select id from products where product='MB-4'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
25, # qty
77);
#13.02.2017
#Вставка поступлений товара actions 50
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-11-20 12:30:00',
(select id from products where product='MB-7'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
17, # qty
181);
#Вставка поступлений товара actions 51
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-11-20 12:31:00',
(select id from products where product='MB-6'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
6, # qty
168);
#Вставка поступлений товара actions 52
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-04-03 11:25:00',
(select id from products where product='MB-2'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
50, # qty
57);
#Вставка поступлений товара actions 53
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-04-24 10:35:00',
(select id from products where product='MB-3'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
60, # qty
63);
#Вставка поступлений товара actions 54
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-07-03 10:45:00',
(select id from products where product='MB-6'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
11, # qty
169);
#Вставка поступлений товара actions 55
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-07-07 13:07:00',
(select id from products where product='MB-2'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
20, # qty
70);
#Вставка поступлений товара actions 56
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-07-07 13:08:00',
(select id from products where product='MB-5'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
25, # qty
144);
#Вставка поступлений товара actions 57
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-07-07 13:09:00',
(select id from products where product='MB-4'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
40, # qty
81);
#Вставка поступлений товара actions 58
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-07-16 14:02:00',
(select id from products where product='MB-8'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
10, # qty
236);
#Вставка поступлений товара actions 59
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-08-12 11:37:00',
(select id from products where product='MB-7'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
12, # qty
180);
#Вставка поступлений товара actions 60
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-08-20 10:04:00',
(select id from products where product='MB-2'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
30, # qty
68);
#Вставка поступлений товара actions 61
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-09-11 11:14:00',
(select id from products where product='MB-3'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
100, # qty
62);
#Вставка поступлений товара actions 62
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-10-06 09:57:00',
(select id from products where product='S2 HDD 500Gb, 7200 rpm'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
10, # qty
74);
#Вставка поступлений товара actions 63
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-10-06 09:59:00',
(select id from products where product='MB-6'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
19, # qty
159);
#Вставка поступлений товара actions 64
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-10-7 13:20:00',
(select id from products where product='MB-2'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
11, # qty
77);
#Вставка поступлений товара actions 65
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-10-16 09:48:00',
(select id from products where product='MB-4'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
3, # qty
91);
#Вставка поступлений товара actions 66
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-10-19 10:06:00',
(select id from products where product='MB-7'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
8, # qty
188);
#Вставка поступлений товара actions 67
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-10-27 10:45:00',
(select id from products where product='MB-3'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
20, # qty
72);
#Вставка поступлений товара actions 68
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-02-25 11:12:00',
(select id from products where product='MB-1'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
25, # qty
63);
#Вставка поступлений товара actions 69
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-03-03 14:25:00',
(select id from products where product='MB-8'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
15, # qty
234);
#Вставка поступлений товара actions 70
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-03-06 09:52:00',
(select id from products where product='S2 HDD 500Gb, 7200 rpm'), # product
(select id from suppliers where supplier='Cargo Transfer'), # supplier
25, # qty
76);

#4U
#Вставка поступлений товара actions 71
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-25 09:05:00',
(select id from products where product='S1 HDD 1T, 7200 rpm'), # product
(select id from suppliers where supplier='4U'), # supplier
33, # qty
115);
#Вставка поступлений товара actions 72
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-25 09:05:00',
(select id from products where product='Z1 HDD 750Gb, 72000rpm'), # product
(select id from suppliers where supplier='4U'), # supplier
40, # qty
90);
#Вставка поступлений товара actions 73
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-26 16:45:00',
(select id from products where product='UN1 HDD 750Gb, 72000rpm'), # product
(select id from suppliers where supplier='4U'), # supplier
100, # qty
94);
#Вставка поступлений товара actions 74
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-28 09:10:00',
(select id from products where product='S5 HDD 500Gb, 7200rpm'), # product
(select id from suppliers where supplier='4U'), # supplier
80, # qty
86);
#Вставка поступлений товара actions 75
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-03 14:15:00',
(select id from products where product='DDR3 SST 4Gb'), # product
(select id from suppliers where supplier='4U'), # supplier
100, # qty
34);
#Вставка поступлений товара actions 76
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-03 14:15:00',
(select id from products where product='Monitor DD27'), # product
(select id from suppliers where supplier='4U'), # supplier
10, # qty
345);
#Вставка поступлений товара actions 77
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-13 10:00:00',
(select id from products where product='Monitor DD27'), # product
(select id from suppliers where supplier='4U'), # supplier
5, # qty
345);
#Вставка поступлений товара actions 78
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-13 10:00:00',
(select id from products where product='MB-8'), # product
(select id from suppliers where supplier='4U'), # supplier
30, # qty
235);
#Вставка поступлений товара actions 79
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-15 17:15:00',
(select id from products where product='DDR3 BTT 4Gb'), # product
(select id from suppliers where supplier='4U'), # supplier
100, # qty
39);
#Вставка поступлений товара actions 80
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-16 09:45:00',
(select id from products where product='MB-7'), # product
(select id from suppliers where supplier='4U'), # supplier
50, # qty
180);
#Вставка поступлений товара actions 81
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-16 09:45:00',
(select id from products where product='Monitor DD27'), # product
(select id from suppliers where supplier='4U'), # supplier
12, # qty
350);
#13.02.2017
#Вставка поступлений товара actions 82
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-12-19 09:23:00',
(select id from products where product='Z1 HDD 750Gb, 72000rpm'), # product
(select id from suppliers where supplier='4U'), # supplier
50, # qty
79);
#Вставка поступлений товара actions 83
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-01-07 10:10:00',
(select id from products where product='Z2 HDD 750Gb, 72000rpm'), # product
(select id from suppliers where supplier='4U'), # supplier
30, # qty
94);
#Вставка поступлений товара actions 84
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-01-09 10:23:00',
(select id from products where product='DDR3 UNK 2Gb'), # product
(select id from suppliers where supplier='4U'), # supplier
25, # qty
18);
#Вставка поступлений товара actions 85
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-01-23 15:45:00',
(select id from products where product='DDR3 BTT 4Gb'), # product
(select id from suppliers where supplier='4U'), # supplier
60, # qty
39);
#Вставка поступлений товара actions 86
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-01-25 13:17:00',
(select id from products where product='Z1 HDD 750Gb, 72000rpm'), # product
(select id from suppliers where supplier='4U'), # supplier
5, # qty
101);
#Вставка поступлений товара actions 87
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-02-01 09:45:00',
(select id from products where product='Monitor DD27'), # product
(select id from suppliers where supplier='4U'), # supplier
5, # qty
351);
#Вставка поступлений товара actions 88
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-02-25 09:15:00',
(select id from products where product='MB-8'), # product
(select id from suppliers where supplier='4U'), # supplier
20, # qty
225);
#Вставка поступлений товара actions 89
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-02-25 10:03:00',
(select id from products where product='UN1 HDD 750Gb, 72000rpm'), # product
(select id from suppliers where supplier='4U'), # supplier
16, # qty
93);
#Вставка поступлений товара actions 90
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-03-09 17:43:00',
(select id from products where product='DDR3 BTT 8Gb'), # product
(select id from suppliers where supplier='4U'), # supplier
24, # qty
75);
#Вставка поступлений товара actions 91
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-03-18 13:06:00',
(select id from products where product='MB-7'), # product
(select id from suppliers where supplier='4U'), # supplier
10, # qty
183);
#Вставка поступлений товара actions 92
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-03-24 11:18:00',
(select id from products where product='Z1 HDD 750Gb, 72000rpm'), # product
(select id from suppliers where supplier='4U'), # supplier
40, # qty
92);
#Вставка поступлений товара actions 93
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-03-24 11:19:00',
(select id from products where product='Z2 HDD 750Gb, 72000rpm'), # product
(select id from suppliers where supplier='4U'), # supplier
35, # qty
99);
#Вставка поступлений товара actions 94
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-03-24 11:20:00',
(select id from products where product='DDR3 ZPP 4Gb'), # product
(select id from suppliers where supplier='4U'), # supplier
20, # qty
37);
#Вставка поступлений товара actions 95
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-04-12 15:55:00',
(select id from products where product='UN1 HDD 750Gb, 72000rpm'), # product
(select id from suppliers where supplier='4U'), # supplier
50, # qty
95);
#Вставка поступлений товара actions 96
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-05-18 13:15:00',
(select id from products where product='MB-8'), # product
(select id from suppliers where supplier='4U'), # supplier
1, # qty
255);
#Вставка поступлений товара actions 97
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-05-18 13:15:00',
(select id from products where product='MB-7'), # product
(select id from suppliers where supplier='4U'), # supplier
3, # qty
196);
#Вставка поступлений товара actions 98
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-06-01 10:05:00',
(select id from products where product='DDR3 ZPP 4Gb'), # product
(select id from suppliers where supplier='4U'), # supplier
60, # qty
34);
#Вставка поступлений товара actions 99
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-07-01 12:21:00',
(select id from products where product='Monitor DD27'), # product
(select id from suppliers where supplier='4U'), # supplier
7, # qty
348);
#Вставка поступлений товара actions 100
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-12-13 09:52:00',
(select id from products where product='DDR3 ZPP 4Gb'), # product
(select id from suppliers where supplier='4U'), # supplier
10, # qty
42);
#Вставка поступлений товара actions 101
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-01-20 15:35:00',
(select id from products where product='S1 HDD 1T, 7200 rpm'), # product
(select id from suppliers where supplier='4U'), # supplier
20, # qty
115);
#Вставка поступлений товара actions 102
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-02-25 16:05:00',
(select id from products where product='DDR3 SST 4Gb'), # product
(select id from suppliers where supplier='4U'), # supplier
80, # qty
36);
#Вставка поступлений товара actions 103
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-03-12 12:45:00',
(select id from products where product='DDR3 BTT 4Gb'), # product
(select id from suppliers where supplier='4U'), # supplier
50, # qty
39);

#IDT
#Вставка поступлений товара actions 104
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-29 13:00:00',
(select id from products where product='S5 HDD 500Gb, 7200rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
120, # qty
78);
#Вставка поступлений товара actions 105
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-07-29 13:00:00',
(select id from products where product='S3 HDD 250Gb, 10000 rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
80, # qty
130);
#Вставка поступлений товара actions 106
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-10 09:50:00',
(select id from products where product='S5 HDD 500Gb, 7200rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
60, # qty
78);
#Вставка поступлений товара actions 107
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2015-08-12 10:10:00',
(select id from products where product='S3 HDD 250Gb, 10000 rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
85, # qty
129);
#13.02.2017
#Вставка поступлений товара actions 108
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-02-12 09:15:00',
(select id from products where product='S3 HDD 250Gb, 10000 rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
100, # qty
127);
#Вставка поступлений товара actions 109
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-02-25 17:02:00',
(select id from products where product='S2 HDD 500Gb, 7200 rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
50, # qty
73);
#Вставка поступлений товара actions 110
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-02-25 17:03:00',
(select id from products where product='S1 HDD 1T, 7200 rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
63, # qty
99);
#Вставка поступлений товара actions 111
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-02-25 17:03:00',
(select id from products where product='S5 HDD 500Gb, 7200rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
20, # qty
82);
#Вставка поступлений товара actions 112
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-06-14 16:03:00',
(select id from products where product='S3 HDD 250Gb, 10000 rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
25, # qty
127);
#Вставка поступлений товара actions 113
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-07-19 10:25:00',
(select id from products where product='S3 HDD 250Gb, 10000 rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
20, # qty
127);
#Вставка поступлений товара actions 114
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-09-01 09:25:00',
(select id from products where product='S1 HDD 1T, 7200 rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
30, # qty
116);
#Вставка поступлений товара actions 115
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-11-01 10:10:00',
(select id from products where product='S2 HDD 500Gb, 7200 rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
30, # qty
73);
#Вставка поступлений товара actions 116
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2016-12-25 13:09:00',
(select id from products where product='S5 HDD 500Gb, 7200rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
20, # qty
83);
#Вставка поступлений товара actions 117
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-01-11 09:15:00',
(select id from products where product='S4 HDD 1T, 7200rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
15, # qty
120);
#Вставка поступлений товара actions 118
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-01-14 10:22:00',
(select id from products where product='S3 HDD 250Gb, 10000 rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
90, # qty
127);
#Вставка поступлений товара actions 119
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-01-29 10:30:00',
(select id from products where product='S2 HDD 500Gb, 7200 rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
40, # qty
77);
#Вставка поступлений товара actions 120
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-02-10 15:56:00',
(select id from products where product='S4 HDD 1T, 7200rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
20, # qty
118);
#Вставка поступлений товара actions 121
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-02-10 15:57:00',
(select id from products where product='S1 HDD 1T, 7200 rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
25, # qty
116);
#Вставка поступлений товара actions 122
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-02-22 11:37:00',
(select id from products where product='S5 HDD 500Gb, 7200rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
65, # qty
80);
#Вставка поступлений товара actions 123
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-02-28 08:47:00',
(select id from products where product='S3 HDD 250Gb, 10000 rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
10, # qty
145);
#Вставка поступлений товара actions 124
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-03-05 10:45:00',
(select id from products where product='S4 HDD 1T, 7200rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
100, # qty
109);
#Вставка поступлений товара actions 125
INSERT INTO actions (action_date, product_id, supplier_id, qty, price)
VALUES ('2017-03-10 13:23:00',
(select id from products where product='S5 HDD 500Gb, 7200rpm'), # product
(select id from suppliers where supplier='IDT'), # supplier
45, # qty
84);

Задание 1

Написать SQL запрос, в результате которого выводятся данные о суммах поставок, сгруппированные по брендам. Товары без бренда рассматривать как отдельную группу. В результате запроса выводить названия брендов и суммы поставок по брендам.


Задание 2

Написать SQL запрос, в результате которого выводятся данные об итоговых суммах поставок для каждого поставщика и категории товара за 2016 год.


Задание 3

Написать SQL запрос, в результате которого выводятся среднегодовые цены поставки для каждой категории товара, а также максимальная и минимальная цена за год. Также в запрос нужно вывести название категории товаров, год. Цены должны быть рассчитаны по каждому году, за который есть данные в базе. Данные должны быть отсортированы по категории и году.


Алгоритм расчета средней цены поставки за какой-либо период: например, было две поставки по категории товара:

50 единиц по 10 долларов за единицу,
20 единиц по 15 долларов за единицу.
Расчет средней цены с учетом количества: общая сумма поставок делится на общее количество:

(50 ед. *10 долл. + 20 ед. *15 долл.)/(50 ед.+20 ед.) = 11,42857
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помогите решить задания, есть таблица нужно выполнить sql запросы (задания внизу)
    #40130133
Фотография Akina
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помогите решить задания, есть таблица нужно выполнить sql запросы (задания внизу)
    #40130134
Alibek B
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помогите решить задания, есть таблица нужно выполнить sql запросы (задания внизу)
    #40130163
MikkiMouse
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Alibek B.,

Лайк!
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