{"id":1057,"date":"2024-10-10T10:37:30","date_gmt":"2024-10-10T07:37:30","guid":{"rendered":"https:\/\/aristov.tech\/blog\/?p=1057"},"modified":"2024-10-10T10:37:30","modified_gmt":"2024-10-10T07:37:30","slug":"merge-v-postgresql","status":"publish","type":"post","link":"https:\/\/aristov.tech\/blog\/merge-v-postgresql\/","title":{"rendered":"MERGE \u0432 PostgreSQL"},"content":{"rendered":"\n<p>\u0421\u0442\u0430\u0442\u044c\u044f \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u0430 \u043d\u0430\u00a0<a href=\"https:\/\/youtu.be\/O4wmm9t3kmU\">19 \u0432\u0438\u0434\u0435\u043e\u00a0<\/a>\u0438\u0437 30 \u0442\u0435\u043c\u00a0<a href=\"https:\/\/aristov.tech\/blog\/kurs-sql-c-0\/\">\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 <a href=\"https:\/\/rutube.ru\/video\/ffd7b69c6c91d8dd2537f2b5a3fd920f\/\">RUTUBE<\/a> \u0438 <a href=\"https:\/\/vk.com\/video-212716752_456239102\">VK \u0432\u0438\u0434\u0435\u043e<\/a>.<\/p>\n\n\n\n<p class=\"has-large-font-size\"><strong>MERGE vs INSERT ON CONFLICT<\/strong><\/p>\n\n\n\n<p>MERGE \u043f\u043e\u044f\u0432\u0438\u043b\u0441\u044f \u0432 PostgreSQL \u0442\u043e\u043b\u044c\u043a\u043e \u0432 14 \u0432\u0435\u0440\u0441\u0438\u0438<\/p>\n\n\n\n<p><a href=\"https:\/\/www.postgresql.org\/docs\/current\/sql-merge.html\">MERGE <\/a>\u043f\u043e\u0445\u043e\u0436 \u043d\u0430 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440 UPSERT \u0432 \u0434\u0440\u0443\u0433\u0438\u0445 \u0434\u0438\u0430\u043b\u0435\u043a\u0442\u0430\u0445 SQL \u0438\u043b\u0438 INSERT ON CONFLICT (\u043f\u043e\u0434\u0440\u043e\u0431\u043d\u0435\u0435 \u043e \u0435\u0433\u043e \u0441\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0441\u0435 \u0432 <a href=\"https:\/\/aristov.tech\/blog\/insert-v-postgresql\/\">\u043c\u043e\u0435\u0439 \u0441\u0442\u0430\u0442\u044c\u0435<\/a>) \u0432 PostgreSQL. <\/p>\n\n\n\n<p>MERGE <a href=\"https:\/\/tproger.ru\/articles\/primenenie-operatora-merge-v-postgresql\">\u0438\u043c\u0435\u0435\u0442 \u0440\u044f\u0434 \u043f\u0440\u0435\u0438\u043c\u0443\u0449\u0435\u0441\u0442\u0432<\/a>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0411\u043e\u043b\u0435\u0435 \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u0435\u043d, \u043f\u043e\u0441\u043a\u043e\u043b\u044c\u043a\u0443 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u0434\u043b\u044f \u043a\u0430\u0436\u0434\u043e\u0439 \u0441\u0442\u0440\u043e\u043a\u0438.<\/li>\n\n\n\n<li>\u0410\u0442\u043e\u043c\u0430\u0440\u043d\u044b\u0439, \u043f\u043e\u0441\u043a\u043e\u043b\u044c\u043a\u0443 \u043b\u0438\u0431\u043e \u0443\u0441\u043f\u0435\u0448\u043d\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u0442\u0441\u044f, \u043b\u0438\u0431\u043e \u0437\u0430\u0432\u0435\u0440\u0448\u0430\u0435\u0442\u0441\u044f \u043d\u0435\u0443\u0434\u0430\u0447\u0435\u0439 \u0446\u0435\u043b\u0438\u043a\u043e\u043c.<\/li>\n\n\n\n<li>\u0411\u043e\u043b\u0435\u0435 \u0433\u0438\u0431\u043a\u0438\u0439, \u043f\u043e\u0441\u043a\u043e\u043b\u044c\u043a\u0443 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0443\u043a\u0430\u0437\u044b\u0432\u0430\u0442\u044c \u0431\u043e\u043b\u0435\u0435 \u0441\u043b\u043e\u0436\u043d\u044b\u0435 \u0443\u0441\u043b\u043e\u0432\u0438\u044f.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-large-font-size\"><strong>\u0421\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0441<\/strong><\/p>\n\n\n\n<p>\u0421\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0441 MERGE:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>MERGE INTO target_table AS t\nUSING source_table AS s\nON 'condition'\nWHEN MATCHED THEN\n&nbsp;&nbsp;&nbsp; 'update_statement'\nWHEN NOT MATCHED THEN\n&nbsp;&nbsp;&nbsp; 'insert_statement'<\/code><\/pre>\n\n\n\n<p>\u041a\u043b\u0430\u0441\u0441\u0438\u0447\u0435\u0441\u043a\u043e\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 &#8212; \u0434\u043e\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u0446\u0435\u043b\u0435\u0432\u043e\u0439 \u0442\u0430\u0431\u043b\u0438\u0446\u0435 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0442\u0430\u0431\u043b\u0438\u0446\u044b-\u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0430. \u0418\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f, \u043a\u043e\u0433\u0434\u0430 \u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f \u043d\u0435 \u043c\u0433\u043d\u043e\u0432\u0435\u043d\u043d\u043e\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0435 \u0434\u0430\u043d\u043d\u044b\u0445, \u0430 \u043d\u0435\u043c\u043d\u043e\u0433\u043e \u043e\u0442\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0435.<\/p>\n\n\n\n<p class=\"has-large-font-size\"><strong>\u041f\u0440\u0430\u043a\u0442\u0438\u043a\u0430<\/strong><\/p>\n\n\n\n<p>\u0421\u043e\u0437\u0434\u0430\u0434\u0438\u043c \u0442\u0430\u0431\u043b\u0438\u0446\u0443 \u0441 \u0430\u043a\u043a\u0430\u0443\u043d\u0442\u0430\u043c\u0438:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE customer_account(\n  id SERIAL,\n  fk_customer INT NOT NULL,\n  balance NUMERIC(15,2)\n);<\/code><\/pre>\n\n\n\n<p>\u0417\u0430\u043f\u043e\u043b\u043d\u044f\u0435\u043c \u0442\u0440\u0435\u043c\u044f \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f\u043c\u0438:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>INSERT INTO customer_account (fk_customer,balance) VALUES \n    (1, 100.0),\n    (2,200.5),\n    (3,300.9);<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"407\" height=\"130\" src=\"https:\/\/aristov.tech\/blog\/wp-content\/uploads\/2024\/07\/image-60.png\" alt=\"\" class=\"wp-image-1059\" srcset=\"https:\/\/aristov.tech\/blog\/wp-content\/uploads\/2024\/07\/image-60.png 407w, https:\/\/aristov.tech\/blog\/wp-content\/uploads\/2024\/07\/image-60-300x96.png 300w\" sizes=\"auto, (max-width: 407px) 100vw, 407px\" \/><\/figure>\n\n\n\n<p>\u0421\u043e\u0437\u0434\u0430\u0434\u0438\u043c \u0442\u0430\u0431\u043b\u0438\u0446\u0443 \u0441 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u044f\u043c\u0438:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE recent_transactions(\n  id SERIAL,\n  fk_customer INT NOT NULL,\n  transaction_value NUMERIC(15,2)\n);<\/code><\/pre>\n\n\n\n<p>\u0414\u043e\u0431\u0430\u0432\u0438\u043c \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0438 \u0432 \u0442\u0430\u0431\u043b\u0438\u0446\u0443:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>INSERT INTO recent_transactions (fk_customer,transaction_value)\nVALUES\n    (1, -10.0),\n    (2,10.0);\nINSERT INTO recent_transactions (fk_customer,transaction_value)\nVALUES\n    (5,500.0);<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"474\" height=\"145\" src=\"https:\/\/aristov.tech\/blog\/wp-content\/uploads\/2024\/07\/image-61.png\" alt=\"\" class=\"wp-image-1060\" srcset=\"https:\/\/aristov.tech\/blog\/wp-content\/uploads\/2024\/07\/image-61.png 474w, https:\/\/aristov.tech\/blog\/wp-content\/uploads\/2024\/07\/image-61-300x92.png 300w\" sizes=\"auto, (max-width: 474px) 100vw, 474px\" \/><\/figure>\n\n\n\n<p>\u0412 \u0442\u0430\u0431\u043b\u0438\u0446\u0443 \u0441 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u044f\u043c\u0438 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c, \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u043d\u0435\u0442 \u0432 \u0442\u0430\u0431\u043b\u0438\u0446\u0435 \u0430\u043a\u043a\u0430\u0443\u043d\u0442\u043e\u0432.<\/p>\n\n\n\n<p>\u041d\u0430\u043f\u0438\u0448\u0435\u043c \u043a\u043e\u043c\u0430\u043d\u0434\u0443, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0432 \u0442\u0430\u0431\u043b\u0438\u0446\u0435 \u0410\u043a\u043a\u0430\u0443\u043d\u0442\u044b (\u0446\u0435\u043b\u0435\u0432\u0430\u044f) \u043f\u0440\u0438 \u0441\u043e\u0432\u043f\u0430\u0434\u0435\u043d\u0438\u0438 \u0432\u043d\u0435\u0448\u043d\u0435\u0433\u043e \u043a\u043b\u044e\u0447\u0430 \u043e\u0431\u043d\u043e\u0432\u043b\u044f\u0435\u0442 \u0431\u0430\u043b\u0430\u043d\u0441 \u0432 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0438\u0435 \u0441 \u0442\u0430\u0431\u043b\u0438\u0446\u0435\u0439 \u0422\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0438 (\u0442\u0430\u0431\u043b\u0438\u0446\u0430-\u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a), \u0430 \u043f\u0440\u0438 \u043d\u0435 \u0441\u043e\u0432\u043f\u0430\u0434\u0435\u043d\u0438\u0438 \u0432\u043d\u0435\u0448\u043d\u0435\u0433\u043e \u043a\u043b\u044e\u0447\u0430 &#8212; \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u0435\u0442 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u0438 \u0431\u0430\u043b\u0430\u043d\u0441:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>MERGE INTO customer_account ca\nUSING recent_transactions t\n  ON t.fk_customer = ca.fk_customer\nWHEN MATCHED THEN\n  UPDATE SET balance = balance + t.transaction_value\nWHEN NOT MATCHED THEN\n  INSERT (fk_customer, balance) VALUES \n        (t.fk_customer, t.transaction_value);<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"391\" height=\"167\" src=\"https:\/\/aristov.tech\/blog\/wp-content\/uploads\/2024\/07\/image-62.png\" alt=\"\" class=\"wp-image-1061\" srcset=\"https:\/\/aristov.tech\/blog\/wp-content\/uploads\/2024\/07\/image-62.png 391w, https:\/\/aristov.tech\/blog\/wp-content\/uploads\/2024\/07\/image-62-300x128.png 300w\" sizes=\"auto, (max-width: 391px) 100vw, 391px\" \/><\/figure>\n\n\n\n<p><\/p>\n\n\n\n<p>\u041f\u0440\u0435\u0437\u0435\u043d\u0442\u0430\u0446\u0438\u044f \u043a \u0441\u0442\u0430\u0442\u044c\u0435&nbsp;<a href=\"https:\/\/github.com\/aeuge\/aristov_tech\/blob\/main\/00%20SQL%20s%200\/presentation\/00%2019%20SQL%20c%200.pdf\">\u0437\u0434\u0435\u0441\u044c<\/a>.<\/p>\n\n\n\n<p>20 \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&nbsp;<a href=\"https:\/\/aristov.tech\/blog\/kurs-sql-c-0\/\">\u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0438 \u043a\u0443\u0440\u0441\u0430<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0421\u0442\u0430\u0442\u044c\u044f \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u0430 \u043d\u0430\u00a019 \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. MERGE vs INSERT ON CONFLICT MERGE \u043f\u043e\u044f\u0432\u0438\u043b\u0441\u044f \u0432 PostgreSQL \u0442\u043e\u043b\u044c\u043a\u043e \u0432 14 \u0432\u0435\u0440\u0441\u0438\u0438 MERGE \u043f\u043e\u0445\u043e\u0436 \u043d\u0430 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440 UPSERT \u0432 \u0434\u0440\u0443\u0433\u0438\u0445 \u0434\u0438\u0430\u043b\u0435\u043a\u0442\u0430\u0445 SQL \u0438\u043b\u0438 INSERT ON CONFLICT (\u043f\u043e\u0434\u0440\u043e\u0431\u043d\u0435\u0435 \u043e \u0435\u0433\u043e \u0441\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0441\u0435 \u0432 \u043c\u043e\u0435\u0439 \u0441\u0442\u0430\u0442\u044c\u0435) \u0432 PostgreSQL. [&hellip;]<\/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":[279,196,280,16,278,72,66],"class_list":["post-1057","post","type-post","status-publish","format-standard","hentry","category-kurs-sql-s-0","category-obuchenie-postgresql","tag-insert-on-conflict","tag-merge","tag-merge-into","tag-postgresql","tag-upsert","tag-kurs","tag-obuchenie"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>MERGE \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\u043c MERGE \u0432 PostgreSQL- \u043d\u043e\u0432\u044b\u0439 \u0438 \u0431\u044b\u0441\u0442\u0440\u044b\u0439 \u0430\u043d\u0430\u043b\u043e\u0433 INSERT ON CONFLICT, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0432 \u0434\u0440\u0443\u0433\u0438\u0445 \u044f\u0437\u044b\u043a\u0430\u0445 \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f UPSERT.\" \/>\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\/merge-v-postgresql\/\" \/>\n<meta property=\"og:locale\" content=\"ru_RU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MERGE \u0432 PostgreSQL - \u0411\u043b\u043e\u0433 \u043f\u043e \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0435 \u0438 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