{"id":1147,"date":"2024-10-29T18:22:50","date_gmt":"2024-10-29T15:22:50","guid":{"rendered":"https:\/\/aristov.tech\/blog\/?p=1147"},"modified":"2024-10-29T18:22:50","modified_gmt":"2024-10-29T15:22:50","slug":"group-by-v-postgresql","status":"publish","type":"post","link":"https:\/\/aristov.tech\/blog\/group-by-v-postgresql\/","title":{"rendered":"GROUP BY \u0432 PostgreSQL"},"content":{"rendered":"\n

\u0421\u0442\u0430\u0442\u044c\u044f \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u0430 \u043d\u0430\u00a022 \u0432\u0438\u0434\u0435\u043e<\/a>\u00a0\u0438\u0437 30 \u0442\u0435\u043c\u00a0\u043a\u0443\u0440\u0441\u0430 SQL c 0<\/a>\u00a0\u043e\u0442 \u0410\u0440\u0438\u0441\u0442\u043e\u0432\u0430 \u0415\u0432\u0433\u0435\u043d\u0438\u044f. \u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0432\u0438\u0434\u0435\u043e \u043d\u0430 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0430\u0445 RUTUBE<\/a> \u0438 VK \u0432\u0438\u0434\u0435\u043e<\/a>.<\/p>\n\n\n\n

\u0412 \u043f\u0440\u043e\u0448\u043b\u044b\u0445 \u0441\u0442\u0430\u0442\u044c\u044f\u0445 \u0443\u0436\u0435 \u0440\u0430\u0437\u0431\u0438\u0440\u0430\u043b\u0438\u0441\u044c \u0440\u0430\u0437\u043d\u044b\u0435 \u0447\u0430\u0441\u0442\u0438 SELECT — WHERE, JOIN, ORDER BY. \u0421\u0435\u0433\u043e\u0434\u043d\u044f \u043f\u043e\u0433\u043e\u0432\u043e\u0440\u0438\u043c \u043e GROUP BY.<\/p>\n\n\n\n

\u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u0432\u044b\u0431\u043e\u0440\u043a\u0438 SELECT \u043c\u043e\u0436\u043d\u043e \u0441\u0433\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043f\u043e \u043a\u0430\u043a\u043e\u043c\u0443-\u043b\u0438\u0431\u043e \u0443\u0441\u043b\u043e\u0432\u0438\u044e \u0438 \u043f\u043e\u0441\u0447\u0438\u0442\u0430\u0442\u044c \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e GROUP BY<\/a>.<\/p>\n\n\n\n

\u0421\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0441:<\/p>\n\n\n\n

SELECT\n    column_1,\n    column_2,\n    \u2026,\naggregate_function(column_3)\nFROM\n    table_name\nGROUP BY\n    column_1,\n    column_2,\n    \u2026;<\/code><\/pre>\n\n\n\n
\u0414\u043b\u044f \u0442\u043e\u0433\u043e, \u0447\u0442\u043e\u0431\u044b \u043f\u043e\u0441\u0447\u0438\u0442\u0430\u0442\u044c \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442, \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0442 \u0430\u0433\u0440\u0435\u0433\u0430\u0442\u043d\u044b\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438.<\/a> \u041c\u043e\u0436\u043d\u043e \u043d\u0430\u0439\u0442\u0438 \u0441\u0440\u0435\u0434\u043d\u0435\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435, \u043c\u0438\u043d\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0435\/\u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0435, \u0441\u0443\u043c\u043c\u0443 \u0438 \u0442.\u0434. \u041d\u0430 \u043e\u0434\u043d\u0443 \u043f\u043e\u0437\u0438\u0446\u0438\u044e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f, \u0443\u043a\u0430\u0437\u0430\u043d\u043d\u043e\u0433\u043e \u043a\u0430\u043a \u0443\u0441\u043b\u043e\u0432\u0438\u0435 \u0433\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0438, \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u0435\u0442 \u0446\u0435\u043b\u0430\u044f \u0433\u0440\u0443\u043f\u043f\u0430 \u0441\u0442\u0440\u043e\u043a. \u041a \u044d\u0442\u043e\u0439 \u0433\u0440\u0443\u043f\u043f\u0435 \u0438 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u044e\u0442\u0441\u044f \u0430\u0433\u0440\u0435\u0433\u0430\u0442\u043d\u044b\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438.<\/p>\n\n\n\n
\u0421\u043e\u0437\u0434\u0430\u0434\u0438\u043c \u0442\u0430\u0431\u043b\u0438\u0446\u0443 \u0421\u043a\u043b\u0430\u0434:<\/p>\n\n\n\n
CREATE TABLE warehouse(\n    id serial,\n    name text,\n    price decimal,\n    kolvo int);<\/code><\/pre>\n\n\n\n
\u0412\u0441\u0442\u0430\u0432\u0438\u043c \u0432 \u043d\u0435\u0451 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f:<\/p>\n\n\n\n
INSERT INTO warehouse (name, price,kolvo) VALUES\n    ('apples', 100,20),\n    ('bananas', 120,30),\n    ('lemons', 300,40),\n    ('pineapple', 52,500);<\/code><\/pre>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u0421\u043e\u0437\u0434\u0430\u0434\u0438\u043c \u0442\u0430\u0431\u043b\u0438\u0446\u0443 \u041f\u0440\u043e\u0434\u0430\u0436\u0438:<\/p>\n\n\n\n
CREATE TABLE sales(\n    id serial,\n    fk_warehouse int,\n    kolvo int,\n    salesdate date DEFAULT now());<\/code><\/pre>\n\n\n\n
\u0414\u043e\u0431\u0430\u0432\u0438\u043c \u0441\u0442\u0440\u043e\u043a\u0438 \u0432 \u0442\u0430\u0431\u043b\u0438\u0446\u0443 \u041f\u0440\u043e\u0434\u0430\u0436\u0438:<\/p>\n\n\n\n
INSERT INTO sales(fk_warehouse, kolvo,salesdate) VALUES\n    (1, 10,'20230915'),\n    (2, 5,'2023-09-14');\nINSERT INTO sales(fk_warehouse, kolvo,salesdate) VALUES\n    (1, 10,'20230915'),\n    (2, 5,'2023-09-14');\nINSERT INTO sales(fk_warehouse, kolvo,salesdate) VALUES\n    (3, 20,'20230911'),\n    (4, 50,'2023-09-12');<\/code><\/pre>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u0423\u0437\u043d\u0430\u0435\u043c \u0441\u0443\u043c\u043c\u044b \u043f\u0440\u043e\u0434\u0430\u0436 \u043f\u043e \u0438\u043c\u0435\u043d\u0430\u043c \u0442\u043e\u0432\u0430\u0440\u043e\u0432 \u0441 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e\u043c \u0431\u043e\u043b\u044c\u0448\u0435 5 \u0435\u0434\u0438\u043d\u0438\u0446 \u0437\u0430 \u0440\u0430\u0437. \u0414\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u043e\u0431\u044a\u0435\u0434\u0438\u043d\u0438\u043c \u0434\u0432\u0435 \u0442\u0430\u0431\u043b\u0438\u0446\u044b \u043f\u043e \u043a\u043b\u044e\u0447\u0430\u043c (JOIN ON), \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u043c \u0443\u0441\u043b\u043e\u0432\u0438\u0435 WHERE \u0438 \u043e\u0442\u0441\u043e\u0440\u0442\u0438\u0440\u0443\u0435\u043c \u043f\u043e \u0438\u043c\u0435\u043d\u0438.<\/p>\n\n\n\n
\u0420\u0430\u0437\u0431\u0435\u0440\u0451\u043c \u0437\u0430\u043f\u0440\u043e\u0441 \u043f\u043e \u0447\u0430\u0441\u0442\u044f\u043c.<\/p>\n\n\n\n
\u0421\u043e\u0437\u0434\u0430\u0435\u043c \u0437\u0430\u043f\u0440\u043e\u0441 \u043f\u043e \u043f\u0440\u043e\u0434\u0430\u0436\u0430\u043c \u0442\u043e\u0432\u0430\u0440\u043e\u0432 (\u043e\u0431\u044a\u0435\u0434\u0435\u043d\u0438\u0435 \u0442\u0430\u0431\u043b\u0438\u0446):<\/p>\n\n\n\n
SELECT s.*, warehouse.name, warehouse.price\nFROM sales s\nJOIN warehouse\n    ON s.fk_warehouse=warehouse.id;<\/code><\/pre>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u0412\u044b\u0431\u0435\u0440\u0435\u043c \u0442\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u043e\u0434\u0430\u0436\u0438 \u0431\u043e\u043b\u044c\u0448\u0435 5 \u0448\u0442\u0443\u043a:<\/p>\n\n\n\n
SELECT s.*, w.name, w.price\nFROM sales s\nJOIN warehouse w\n    ON s.fk_warehouse=w.id\nWHERE s.kolvo>5;<\/code><\/pre>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u0421\u0433\u0440\u0443\u043f\u043f\u0438\u0440\u0443\u0435\u043c \u043f\u043e \u0438\u043c\u0435\u043d\u0438 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0430, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0432 \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0430\u0433\u0440\u0435\u0433\u0430\u0442\u043d\u043e\u0439 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0441\u0443\u043c\u043c\u0443 \u043f\u0440\u043e\u0434\u0430\u0436 (\u0443\u043c\u043d\u043e\u0436\u0435\u043d\u0438\u0435 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u0430 \u043d\u0430 \u0446\u0435\u043d\u0443):<\/p>\n\n\n\n
SELECT w.name as n, sum(s.kolvo*w.price) AS summa\nFROM sales s\nJOIN warehouse w\n    ON s.fk_warehouse=w.id\nWHERE s.kolvo>5\nGROUP BY w.name;<\/code><\/pre>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u0422\u0435\u043f\u0435\u0440\u044c \u043e\u0442\u0441\u043e\u0440\u0442\u0438\u0440\u0443\u0435\u043c:<\/p>\n\n\n\n
SELECT w.name as n, sum(s.kolvo*w.price) AS summa\nFROM sales s\nJOIN warehouse w\n    ON s.fk_warehouse=w.id\nWHERE s.kolvo>5\nGROUP BY w.name\nORDER BY n;<\/code><\/pre>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\u041f\u0440\u0435\u0437\u0435\u043d\u0442\u0430\u0446\u0438\u044f \u043a \u0441\u0442\u0430\u0442\u044c\u0435 \u0437\u0434\u0435\u0441\u044c<\/a>.<\/p>\n\n\n\n
23 \u0438\u0437 30 \u0442\u0435\u043c \u0431\u0443\u0434\u0435\u0442 \u0441\u043a\u043e\u0440\u043e \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u0430. \u0415\u0441\u043b\u0438 \u0432\u044b \u0445\u043e\u0442\u0438\u0442\u0435 \u0431\u044b\u0441\u0442\u0440\u0435\u0435 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0434\u043e\u0441\u0442\u0443\u043f \u2013 \u043f\u0440\u0438\u0441\u043e\u0435\u0434\u0438\u043d\u044f\u0439\u0442\u0435\u0441\u044c \u043a \u043e\u043d\u043b\u0430\u0439\u043d \u0433\u0440\u0443\u043f\u043f\u0435, \u0441\u0441\u044b\u043b\u043a\u0430 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u0430 \u0432 \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0438 \u043a\u0443\u0440\u0441\u0430<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
\u0421\u0442\u0430\u0442\u044c\u044f \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u0430 \u043d\u0430\u00a022 \u0432\u0438\u0434\u0435\u043e\u00a0\u0438\u0437 30 \u0442\u0435\u043c\u00a0\u043a\u0443\u0440\u0441\u0430 SQL c 0\u00a0\u043e\u0442 \u0410\u0440\u0438\u0441\u0442\u043e\u0432\u0430 \u0415\u0432\u0433\u0435\u043d\u0438\u044f. \u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0432\u0438\u0434\u0435\u043e \u043d\u0430 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u0430\u0445 RUTUBE \u0438 VK \u0432\u0438\u0434\u0435\u043e. \u0412 \u043f\u0440\u043e\u0448\u043b\u044b\u0445 \u0441\u0442\u0430\u0442\u044c\u044f\u0445 \u0443\u0436\u0435 \u0440\u0430\u0437\u0431\u0438\u0440\u0430\u043b\u0438\u0441\u044c \u0440\u0430\u0437\u043d\u044b\u0435 \u0447\u0430\u0441\u0442\u0438 SELECT — WHERE, JOIN, ORDER BY. \u0421\u0435\u0433\u043e\u0434\u043d\u044f \u043f\u043e\u0433\u043e\u0432\u043e\u0440\u0438\u043c \u043e GROUP BY. \u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u0432\u044b\u0431\u043e\u0440\u043a\u0438 SELECT \u043c\u043e\u0436\u043d\u043e \u0441\u0433\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043f\u043e \u043a\u0430\u043a\u043e\u043c\u0443-\u043b\u0438\u0431\u043e \u0443\u0441\u043b\u043e\u0432\u0438\u044e \u0438 \u043f\u043e\u0441\u0447\u0438\u0442\u0430\u0442\u044c \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e GROUP BY. \u0421\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0441: \u0414\u043b\u044f […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[204,194],"tags":[299,270,16,227,301,300,66],"class_list":["post-1147","post","type-post","status-publish","format-standard","hentry","category-kurs-sql-s-0","category-obuchenie-postgresql","tag-group-by","tag-order-by","tag-postgresql","tag-select","tag-sum","tag-agregatnye-funkczii","tag-obuchenie"],"yoast_head":"\nGROUP BY \u0432 PostgreSQL - \u0411\u043b\u043e\u0433 \u043f\u043e \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0435 \u0438 \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u0438 PostgreSQL \u043e\u0442 \u0410\u0440\u0438\u0441\u0442\u043e\u0432\u0430 \u0415\u0432\u0433\u0435\u043d\u0438\u044f<\/title>\n<meta name=\"description\" content=\"\u0412 \u0441\u0442\u0430\u0442\u044c\u0435 \u0440\u0430\u0437\u0431\u0438\u0440\u0430\u0435\u0442\u0441\u044f \u043e\u0434\u043d\u0430 \u0438\u0437 \u0447\u0430\u0441\u0442\u0435\u0439 SELECT - GROUP BY. \u0420\u0430\u0441\u0441\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u043c, \u043a\u0430\u043a\u0438\u0435 \u0430\u0433\u0440\u0435\u0433\u0430\u0442\u043d\u044b\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u043c\u043e\u0436\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0432\u043d\u0443\u0442\u0440\u0438 \u0443\u0441\u043b\u043e\u0432\u0438\u044f, \u043f\u043e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u043c \u043f\u0440\u0438\u043c\u0435\u0440\u044b.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aristov.tech\/blog\/group-by-v-postgresql\/\" \/>\n<meta property=\"og:locale\" content=\"ru_RU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"GROUP BY \u0432 PostgreSQL - \u0411\u043b\u043e\u0433 \u043f\u043e \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0435 \u0438 \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u0438 PostgreSQL \u043e\u0442 \u0410\u0440\u0438\u0441\u0442\u043e\u0432\u0430 \u0415\u0432\u0433\u0435\u043d\u0438\u044f\" \/>\n<meta property=\"og:description\" content=\"\u0412 \u0441\u0442\u0430\u0442\u044c\u0435 \u0440\u0430\u0437\u0431\u0438\u0440\u0430\u0435\u0442\u0441\u044f \u043e\u0434\u043d\u0430 \u0438\u0437 \u0447\u0430\u0441\u0442\u0435\u0439 SELECT - GROUP BY. \u0420\u0430\u0441\u0441\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u043c, \u043a\u0430\u043a\u0438\u0435 \u0430\u0433\u0440\u0435\u0433\u0430\u0442\u043d\u044b\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u043c\u043e\u0436\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0432\u043d\u0443\u0442\u0440\u0438 \u0443\u0441\u043b\u043e\u0432\u0438\u044f, 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