{"id":6646,"date":"2023-06-06T16:10:17","date_gmt":"2023-06-06T16:10:17","guid":{"rendered":"https:\/\/otus.ru\/journal\/?p=6646"},"modified":"2024-01-18T19:08:10","modified_gmt":"2024-01-18T19:08:10","slug":"gruppirovka-v-sql","status":"publish","type":"post","link":"https:\/\/otus.ru\/journal\/gruppirovka-v-sql\/","title":{"rendered":"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_61 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >\u0421\u043e\u0434\u0435\u0440\u0436\u0430\u043d\u0438\u0435<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/otus.ru\/journal\/gruppirovka-v-sql\/#%D0%9E%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5\" title=\"\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435\">\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/otus.ru\/journal\/gruppirovka-v-sql\/#%D0%9F%D0%BE%D0%B4%D0%B3%D0%BE%D1%82%D0%BE%D0%B2%D0%BA%D0%B0_%D0%BA_%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D0%B5\" title=\"\u041f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043a\u0430 \u043a \u0440\u0430\u0431\u043e\u0442\u0435\">\u041f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043a\u0430 \u043a \u0440\u0430\u0431\u043e\u0442\u0435<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/otus.ru\/journal\/gruppirovka-v-sql\/#%D0%9F%D1%80%D0%B8%D0%BD%D1%86%D0%B8%D0%BF_%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D1%8B_%D0%BE%D0%BF%D0%B5%D1%80%D0%B0%D1%82%D0%BE%D1%80%D0%B0\" title=\"\u041f\u0440\u0438\u043d\u0446\u0438\u043f \u0440\u0430\u0431\u043e\u0442\u044b \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u0430\">\u041f\u0440\u0438\u043d\u0446\u0438\u043f \u0440\u0430\u0431\u043e\u0442\u044b \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u0430<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/otus.ru\/journal\/gruppirovka-v-sql\/#%D0%A4%D0%BE%D1%80%D0%BC%D0%B0_%D0%B7%D0%B0%D0%BF%D0%B8%D1%81%D0%B8\" title=\"\u0424\u043e\u0440\u043c\u0430 \u0437\u0430\u043f\u0438\u0441\u0438\">\u0424\u043e\u0440\u043c\u0430 \u0437\u0430\u043f\u0438\u0441\u0438<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/otus.ru\/journal\/gruppirovka-v-sql\/#%D0%9C%D0%BD%D0%BE%D0%B6%D0%B5%D1%81%D1%82%D0%B2%D0%B5%D0%BD%D0%BD%D1%8B%D0%B5_%D0%B3%D1%80%D1%83%D0%BF%D0%BF%D1%8B\" title=\"\u041c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0435 \u0433\u0440\u0443\u043f\u043f\u044b\">\u041c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0435 \u0433\u0440\u0443\u043f\u043f\u044b<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/otus.ru\/journal\/gruppirovka-v-sql\/#%D0%9F%D1%80%D0%B8%D0%BC%D0%B5%D1%80%D1%8B_%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D1%8B\" title=\"\u041f\u0440\u0438\u043c\u0435\u0440\u044b \u0440\u0430\u0431\u043e\u0442\u044b\">\u041f\u0440\u0438\u043c\u0435\u0440\u044b \u0440\u0430\u0431\u043e\u0442\u044b<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/otus.ru\/journal\/gruppirovka-v-sql\/#%D0%90%D0%B3%D1%80%D0%B5%D0%B3%D0%B0%D1%82%D0%BD%D1%8B%D0%B5_%D1%84%D1%83%D0%BD%D0%BA%D1%86%D0%B8%D0%B8\" title=\"\u0410\u0433\u0440\u0435\u0433\u0430\u0442\u043d\u044b\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438\">\u0410\u0433\u0440\u0435\u0433\u0430\u0442\u043d\u044b\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/otus.ru\/journal\/gruppirovka-v-sql\/#%D0%A1%D1%83%D0%BC%D0%BC%D0%B0\" title=\"\u0421\u0443\u043c\u043c\u0430\">\u0421\u0443\u043c\u043c\u0430<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/otus.ru\/journal\/gruppirovka-v-sql\/#%D0%A1%D1%80%D0%B5%D0%B4%D0%BD%D0%B5%D0%B5_%D0%B7%D0%BD%D0%B0%D1%87%D0%B5%D0%BD%D0%B8%D0%B5\" title=\"\u0421\u0440\u0435\u0434\u043d\u0435\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435\">\u0421\u0440\u0435\u0434\u043d\u0435\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/otus.ru\/journal\/gruppirovka-v-sql\/#%D0%9D%D0%B5%D1%81%D0%BA%D0%BE%D0%BB%D1%8C%D0%BA%D0%BE_%D0%B3%D1%80%D1%83%D0%BF%D0%BF\" title=\"\u041d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0433\u0440\u0443\u043f\u043f\">\u041d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0433\u0440\u0443\u043f\u043f<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/otus.ru\/journal\/gruppirovka-v-sql\/#%D0%98%D1%81%D0%BF%D0%BE%D0%BB%D1%8C%D0%B7%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5_%D1%84%D1%83%D0%BD%D0%BA%D1%86%D0%B8%D0%B9\" title=\"\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0439\">\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0439<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">SQL \u2013 \u044f\u0437\u044b\u043a \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432. \u041e\u043d \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c \u0441 \u0431\u0430\u0437\u0430\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u0421\u0423\u0411\u0414. \u041d\u0430\u0438\u0431\u043e\u043b\u0435\u0435 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u043e\u0439 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f MySQL. \u041e\u043d\u0430 \u043f\u0440\u043e\u0441\u0442\u0430 \u0432 \u043e\u0441\u0432\u043e\u0435\u043d\u0438\u0438 \u0438 \u043f\u043e\u0434\u043e\u0439\u0434\u0435\u0442 \u043a\u0430\u043a \u043d\u043e\u0432\u0438\u0447\u043a\u0430\u043c, \u0442\u0430\u043a \u0438 \u0431\u043e\u043b\u0435\u0435 \u043e\u043f\u044b\u0442\u043d\u044b\u043c \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430\u043c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u0440\u0438 \u0440\u0430\u0431\u043e\u0442\u0435 \u0441 \u0442\u0430\u0431\u043b\u0438\u0446\u0430\u043c\u0438 \u0432 \u0431\u0430\u0437\u0430\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0435 \u043a\u043e\u043c\u0430\u043d\u0434\u044b. \u041e\u043d\u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c \u0442\u0430\u043a\u0438\u0435 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f, \u043a\u0430\u043a \u0432\u044b\u0431\u043e\u0440\u043a\u0430, \u0441\u043e\u0440\u0442\u0438\u0440\u043e\u0432\u043a\u0430 \u0438 \u043f\u0440. \u041e\u0441\u043e\u0431\u043e\u0435 \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u0435 \u0441\u043b\u0435\u0434\u0443\u0435\u0442 \u0443\u0434\u0435\u043b\u0438\u0442\u044c \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u0443 group by \u0432 SQL. \u0414\u0430\u043b\u0435\u0435 \u043e\u043d \u0431\u0443\u0434\u0435\u0442 \u0438\u0437\u0443\u0447\u0435\u043d \u0431\u043e\u043b\u0435\u0435 \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u043e. \u042d\u0442\u0430 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043f\u0440\u0438\u0433\u043e\u0434\u0438\u0442\u0441\u044f \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u043d\u0430\u0447\u0438\u043d\u0430\u044e\u0449\u0438\u043c, \u043d\u043e \u0438 \u0443\u0436\u0435 \u043f\u0440\u043e\u0434\u0432\u0438\u043d\u0443\u0442\u044b\u043c \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0441\u0442\u0430\u043c, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u043c \u0430\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u0430\u043c.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%9E%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5\"><\/span>\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0438\u044f Group By \u043e\u0442\u0432\u0435\u0447\u0430\u044e\u0442 \u0437\u0430 \u0433\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0443. \u041f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u0442\u0430\u043a\u0438\u0445 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u0432 SQL \u043c\u043e\u0436\u043d\u043e \u0441\u043e\u043f\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0442\u044c \u0441\u0442\u0440\u043e\u043a\u0438. \u041e\u043d\u0438 \u0432\u0441\u0442\u0440\u0435\u0447\u0430\u044e\u0442\u0441\u044f \u0432 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u044f\u0445 \u0441 \u0430\u0433\u0440\u0435\u0433\u0430\u0442\u043d\u044b\u043c\u0438 \u0444\u0443\u043d\u043a\u0446\u0438\u044f\u043c\u0438 (Min, AVG, SUM, Count \u0438 Max).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0424\u0443\u043d\u043a\u0446\u0438\u044f group by \u0432 \u044f\u0437\u044b\u043a\u0435 SQL \u0431\u0443\u0434\u0435\u0442 \u0441\u043e\u043e\u0431\u0449\u0430\u0442\u044c \u0441\u0438\u0441\u0442\u0435\u043c\u0435, \u043a\u0430\u043a \u0430\u0433\u0440\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0434\u0430\u043d\u043d\u044b\u0435 \u0432 \u043d\u0435\u0430\u0433\u0440\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c \u0441\u0442\u043e\u043b\u0431\u0446\u0435, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0431\u044b\u043b \u0437\u0430\u043f\u0440\u043e\u0448\u0435\u043d \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c. \u041e\u043d \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u0441\u0442\u0440\u043e\u043a \u2013 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430 \u0437\u0430\u043f\u0440\u043e\u0441\u0430 \u043f\u043e \u0433\u0440\u0443\u043f\u043f\u0430\u043c. \u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 SQL \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u0439 \u043a\u043e\u043c\u0430\u043d\u0434\u044b \u043c\u043e\u0436\u0435\u0442 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0442\u044c\u0441\u044f \u043a\u0430\u043a \u043f\u043e \u043e\u0434\u043d\u043e\u043c\u0443 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0443, \u0442\u0430\u043a \u0438 \u043f\u043e \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u043c \u043e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%9F%D0%BE%D0%B4%D0%B3%D0%BE%D1%82%D0%BE%D0%B2%D0%BA%D0%B0_%D0%BA_%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D0%B5\"><\/span>\u041f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043a\u0430 \u043a \u0440\u0430\u0431\u043e\u0442\u0435<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0427\u0442\u043e\u0431\u044b \u043b\u0443\u0447\u0448\u0435 \u043f\u043e\u043d\u044f\u0442\u044c, \u043a\u0430\u043a \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0443\u043f\u043e\u043c\u044f\u043d\u0443\u0442\u044b\u0439 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440, \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442\u0441\u044f \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0442\u044c \u043f\u0440\u043e\u0446\u0435\u0441\u0441 \u043d\u0430 \u043d\u0430\u0433\u043b\u044f\u0434\u043d\u044b\u0445 \u043f\u0440\u0438\u043c\u0435\u0440\u0430\u0445. \u0414\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u043f\u0440\u0438\u0434\u0435\u0442\u0441\u044f \u043f\u0440\u043e\u0432\u0435\u0441\u0442\u0438 \u043d\u0435\u0431\u043e\u043b\u044c\u0448\u0443\u044e \u043f\u0440\u0435\u0434\u0432\u0430\u0440\u0438\u0442\u0435\u043b\u044c\u043d\u0443\u044e \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043a\u0443. \u041e\u043d\u0430 \u0437\u0430\u043a\u043b\u044e\u0447\u0430\u0435\u0442\u0441\u044f \u0432 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0438 \u0438\u0441\u0445\u043e\u0434\u043d\u043e\u0439 \u0442\u0430\u0431\u043b\u0438\u0446\u044b \u0441 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0435\u0439. \u041f\u0443\u0441\u0442\u044c \u043e\u043d\u0430 \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f sales \u0438 \u043e\u0442\u043e\u0431\u0440\u0430\u0436\u0430\u0435\u0442 \u043f\u0440\u043e\u0441\u0442\u043e\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0434\u0430\u0436 \u0432 \u043c\u0430\u0433\u0430\u0437\u0438\u043d\u0430\u0445. \u0412 \u043d\u0435\u0439 \u0431\u0443\u0434\u0443\u0442 \u043f\u043e\u043b\u044f:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u043b\u043e\u043a\u0430\u0446\u0438\u0438 (\u043c\u0435\u0441\u0442\u043e);<\/li>\n\n\n\n<li>\u0438\u043c\u044f \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0430;<\/li>\n\n\n\n<li>\u0441\u0442\u043e\u0438\u043c\u043e\u0441\u0442\u044c;<\/li>\n\n\n\n<li>\u0432\u0440\u0435\u043c\u044f \u043f\u0440\u043e\u0434\u0430\u0436\u0438.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u0433\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u043e\u0439 \u0432 SQL-\u0437\u0430\u043f\u0440\u043e\u0441\u0430\u0445 \u0442\u0438\u043f\u044b \u043f\u043e\u043b\u0435\u0439 \u0432 \u0441\u0442\u043e\u043b\u0431\u0446\u0430\u0445 \u0431\u0443\u0434\u0443\u0442 \u043f\u0440\u043e\u0441\u0442\u044b\u043c\u0438 TEXT (\u0442\u0435\u043a\u0441\u0442\u043e\u0432\u044b\u043c\u0438). \u0412 \u0443\u0436\u0435 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0438 \u043e\u0431\u044b\u0447\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f \u0432\u043d\u0435\u0448\u043d\u0438\u0435 \u043a\u043b\u044e\u0447\u0438 \u043a \u0434\u0440\u0443\u0433\u0438\u043c \u0442\u0430\u0431\u043b\u0438\u0446\u0430\u043c.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"969\" height=\"322\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-128.png\" alt=\"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL\" class=\"wp-image-6654\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-128.png 969w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-128-300x100.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-128-150x50.png 150w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-128-768x255.png 768w\" sizes=\"auto, (max-width: 969px) 100vw, 969px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-128.png\",\"width\":\"969\",\"height\":\"322\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u044b\u0448\u0435 \u2013 \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0442\u0430\u0431\u043b\u0438\u0446\u044b, \u043a\u043e\u0442\u043e\u0440\u0443\u044e \u043f\u0440\u0435\u0434\u0441\u0442\u043e\u0438\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0434\u0430\u043b\u0435\u0435 \u0434\u043b\u044f \u0438\u0437\u0443\u0447\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u043d\u0446\u0438\u043f\u043e\u0432 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f group by.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u043c \u043f\u0440\u0438\u043c\u0435\u0440\u0435 \u0438\u043c\u0435\u044e\u0442\u0441\u044f \u0442\u0440\u0438 \u043b\u043e\u043a\u0430\u0446\u0438\u0438: HQ, 1<sup>st<\/sup> Street \u0438 Downtown. \u0417\u0434\u0435\u0441\u044c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u0432\u0441\u0435\u0433\u043e \u0434\u0432\u0430 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0430 \u2013 \u043a\u043e\u0444\u0435 (coffee) \u0438 \u0431\u0443\u0431\u043b\u0438\u043a\u0438 (bagel). \u041f\u0440\u043e\u0434\u0430\u0436\u0438 \u0431\u0443\u0434\u0443\u0442 \u0432\u043d\u043e\u0441\u0438\u0442\u044c\u0441\u044f \u0441 \u0440\u0430\u0437\u043d\u044b\u043c\u0438 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f\u043c\u0438 sold_at. \u042d\u0442\u043e \u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0430\u0446\u0438\u0438 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u0430 \u043f\u0440\u043e\u0434\u0443\u043a\u0446\u0438\u0438, \u043f\u0440\u043e\u0434\u0430\u043d\u043d\u043e\u0439 \u0432 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0435 \u0434\u043d\u0438 \u0438 \u0432\u0440\u0435\u043c\u044f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u0440\u0438\u043c\u0435\u0440\u044b, \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0435\u043d\u043d\u044b\u0435 \u0434\u0430\u043b\u0435\u0435, \u0431\u0443\u0434\u0443\u0442 \u043e\u0442\u043e\u0431\u0440\u0430\u0436\u0430\u0442\u044c \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u043f\u0440\u043e\u0434\u0443\u043a\u0446\u0438\u0438 \u00ab\u0441\u0435\u0433\u043e\u0434\u043d\u044f\u00bb, \u00ab\u0432\u0447\u0435\u0440\u0430\u00bb, \u00ab\u043f\u043e\u0437\u0430\u0432\u0447\u0435\u0440\u0430\u00bb.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%9F%D1%80%D0%B8%D0%BD%D1%86%D0%B8%D0%BF_%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D1%8B_%D0%BE%D0%BF%D0%B5%D1%80%D0%B0%D1%82%D0%BE%D1%80%D0%B0\"><\/span>\u041f\u0440\u0438\u043d\u0446\u0438\u043f \u0440\u0430\u0431\u043e\u0442\u044b \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u0430<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0420\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u044f \u043f\u0440\u0438\u043c\u0435\u0440\u044b \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f group by, \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u043f\u043e\u043d\u0438\u043c\u0430\u0442\u044c, \u043a\u0430\u043a \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0438\u0440\u0443\u0435\u0442 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0430\u044f \u043a\u043e\u043c\u0430\u043d\u0434\u0430. \u0420\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0443\u0435\u0442\u0441\u044f \u0434\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u0438\u0437\u0443\u0447\u0438\u0442\u044c \u0436\u0438\u0437\u043d\u0435\u043d\u043d\u044b\u0439 \u0441\u043b\u0443\u0447\u0430\u0439.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u0430\u043d\u0430 \u043a\u043e\u043c\u043d\u0430\u0442\u0430, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043c\u043d\u043e\u0433\u043e \u043b\u044e\u0434\u0435\u0439. \u041e\u043d\u0438 \u0440\u043e\u0434\u0438\u043b\u0438\u0441\u044c \u0432 \u0441\u0430\u043c\u044b\u0445 \u0440\u0430\u0437\u043d\u044b\u0445 \u0441\u0442\u0440\u0430\u043d\u0430\u0445. \u0422\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f \u0432\u044b\u0447\u0438\u0441\u043b\u0438\u0442\u044c \u0441\u0440\u0435\u0434\u043d\u0438\u0439 \u0440\u043e\u0441\u0442 \u043b\u044e\u0434\u0435\u0439 \u0432 \u0440\u0430\u0437\u0440\u0435\u0437\u0435 \u043f\u043e \u043c\u0435\u0441\u0442\u0443 \u0440\u043e\u0436\u0434\u0435\u043d\u0438\u044f. \u0414\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u0441\u043d\u0430\u0447\u0430\u043b\u0430 \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u0440\u0430\u0437\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u043b\u044e\u0434\u0435\u0439 \u043d\u0430 \u0433\u0440\u0443\u043f\u043f\u044b \u043f\u043e \u0441\u0442\u0440\u0430\u043d\u0430\u043c, \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043e\u043d\u0438 \u043f\u0440\u0438\u0431\u044b\u043b\u0438. \u0422\u043e\u043b\u044c\u043a\u043e \u043f\u043e\u0441\u043b\u0435 \u044d\u0442\u043e\u0433\u043e \u0443\u0434\u0430\u0441\u0442\u0441\u044f \u0440\u0430\u0441\u0441\u0447\u0438\u0442\u0430\u0442\u044c \u0441\u0440\u0435\u0434\u043d\u0438\u0439 \u0440\u043e\u0441\u0442 \u0432 \u043a\u0430\u0436\u0434\u043e\u043c \u0441\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c \u00ab\u043a\u043b\u0430\u0441\u0441\u0435\u00bb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0410\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u043d\u044b\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0438\u0440\u0443\u0435\u0442 \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0435\u043c\u044b\u0439 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440. \u0422\u0435\u043f\u0435\u0440\u044c \u044f\u0441\u043d\u043e, \u043a\u0430\u043a \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 group by. \u042d\u0442\u0430 \u0444\u0443\u043d\u043a\u0446\u0438\u044f \u0433\u0440\u0443\u043f\u043f\u0438\u0440\u0443\u0435\u0442 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e \u043f\u043e \u0441\u0442\u0440\u043e\u043a\u0430\u043c. \u0421\u043d\u0430\u0447\u0430\u043b\u0430 \u043d\u0443\u0436\u043d\u043e \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442\u044c, \u043a\u0430\u043a \u0431\u0443\u0434\u0435\u0442 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0442\u044c\u0441\u044f \u043a\u043b\u0430\u0441\u0441\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f. \u041f\u043e\u0441\u043b\u0435 \u2013 \u043f\u0440\u043e\u0438\u0437\u0432\u0435\u0441\u0442\u0438 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u044b\u0435 \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f \u0438\u043b\u0438 \u0430\u0433\u0440\u0435\u0433\u0430\u0446\u0438\u0438.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%A4%D0%BE%D1%80%D0%BC%D0%B0_%D0%B7%D0%B0%D0%BF%D0%B8%D1%81%D0%B8\"><\/span>\u0424\u043e\u0440\u043c\u0430 \u0437\u0430\u043f\u0438\u0441\u0438<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0438\u0435 Group By \u0431\u0443\u0434\u0435\u0442 \u0437\u0430\u0432\u0438\u0441\u0435\u0442\u044c \u043e\u0442 \u043d\u0435\u043f\u043e\u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0433\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0433\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f. \u041e\u0431\u0449\u0430\u044f \u0444\u043e\u0440\u043c\u0430 \u0437\u0430\u043f\u0438\u0441\u0438 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0430\u044f:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;SELECT \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435_\u0441\u0442\u043e\u043b\u0431\u0446\u043e\u0432&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;FROM \u0438\u043c\u044f_\u0438\u043c\u0435\u044e\u0449\u0435\u0439\u0441\u044f_\u0442\u0430\u0431\u043b\u0438\u0446\u044b<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;[WHERE \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u044b\u0435 \u0443\u0441\u043b\u043e\u0432\u0438\u044f \u0434\u043b\u044f \u0432\u044b\u0431\u043e\u0440\u043a\u0438 \u043f\u043e\u043b\u0435\u0439]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;&nbsp;GROUP BY \u0438\u043c\u0435\u043d\u0430_\u0441\u0442\u043e\u0431\u043b\u0446\u043e\u0432_\u0432_\u0442\u0430\u0431\u043b\u0438\u0446\u0435<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;\u0415\u0441\u043b\u0438 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u0432\u044b\u0432\u0435\u0441\u0442\u0438 \u0432\u0441\u0435\u0433\u043e \u043e\u0434\u0438\u043d \u0441\u0442\u043e\u043b\u0431\u0435\u0446, \u043f\u043e \u043a\u043e\u0442\u043e\u0440\u043e\u043c\u0443 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0433\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430, \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440 \u0431\u0443\u0434\u0435\u0442 \u0432\u044b\u0431\u0438\u0440\u0430\u0442\u044c \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u044b\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f. \u0414\u0443\u0431\u043b\u0438\u043a\u0430\u0442\u044b \u0438\u0437 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0438\u0440\u0443\u044e\u0449\u0435\u0439 \u0442\u0430\u0431\u043b\u0438\u0446\u044b \u0443\u0431\u0438\u0440\u0430\u044e\u0442\u0441\u044f. \u0412 \u0434\u0430\u043d\u043d\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 group by \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0438\u0440\u0443\u0435\u0442 \u0442\u043e\u0447\u043d\u043e \u0442\u0430\u043a\u0436\u0435, \u043a\u0430\u043a \u0438 \u043a\u043b\u044e\u0447\u0435\u0432\u043e\u0435 \u0441\u043b\u043e\u0432\u043e DISTINCT.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%9C%D0%BD%D0%BE%D0%B6%D0%B5%D1%81%D1%82%D0%B2%D0%B5%D0%BD%D0%BD%D1%8B%D0%B5_%D0%B3%D1%80%D1%83%D0%BF%D0%BF%D1%8B\"><\/span>\u041c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0435 \u0433\u0440\u0443\u043f\u043f\u044b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0420\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0435\u043c\u044b\u0439 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0433\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e \u0432 \u0441\u0430\u043c\u043e\u0435 \u0440\u0430\u0437\u043d\u043e\u0435 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0433\u0440\u0443\u043f\u043f \u0438 \u043f\u043e\u0434\u0433\u0440\u0443\u043f\u043f. \u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0435 \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 group by \u043f\u0440\u0438\u043c\u0435\u0440\u044b \u0434\u0430\u043b\u0435\u0435 \u043d\u0430\u0433\u043b\u044f\u0434\u043d\u043e \u043f\u0440\u043e\u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0438\u0440\u0443\u044e\u0442 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u0433\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0438 \u0432 SQL \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u044e\u0442\u0441\u044f \u0442\u043e\u0433\u0434\u0430, \u043a\u043e\u0433\u0434\u0430 \u043c\u043e\u0436\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0442\u0430\u043a\u0438\u0435 \u043e\u0431\u043e\u0440\u043e\u0442\u044b \u043a\u0430\u043a:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u043f\u043e \u0447\u0435\u043c\u0443-\u0442\u043e;<\/li>\n\n\n\n<li>\u0432 \u043a\u0430\u0436\u0434\u043e\u043c.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u0440\u0438\u043c\u0435\u0440\u044b \u2013 \u043b\u044e\u0434\u0435\u0439 \u043c\u043e\u0436\u043d\u043e \u0440\u0430\u0437\u0434\u0435\u043b\u0438\u0442\u044c \u043f\u043e \u0441\u0440\u0435\u0434\u043d\u0435\u043c\u0443 \u0440\u043e\u0441\u0442\u0443 \u043f\u043e \u0441\u0442\u0440\u0430\u043d\u0435 \u0440\u043e\u0436\u0434\u0435\u043d\u0438\u044f, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0432\u044b\u044f\u0441\u043d\u0438\u0442\u044c \u043e\u0431\u0449\u0435\u0435 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u043b\u0438\u0446 \u0432 \u043a\u0430\u0436\u0434\u043e\u043c \u00ab\u043a\u043b\u0430\u0441\u0441\u0435\u00bb \u0441 \u0442\u0435\u043c \u0438\u043b\u0438 \u0438\u043d\u044b\u043c \u0446\u0432\u0435\u0442\u043e\u043c \u0432\u043e\u043b\u043e\u0441. \u0412 \u0441\u043b\u0443\u0447\u0430\u0435 \u0441 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u043d\u043e\u0439 \u0440\u0430\u043d\u0435\u0435 \u0442\u0430\u0431\u043b\u0438\u0446\u0435\u0439 \u0430\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440 \u0441\u043f\u043e\u0441\u043e\u0431\u0435\u043d \u0443\u0442\u043e\u0447\u043d\u0438\u0442\u044c \u043e\u0431\u0449\u0435\u0435 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u043f\u0440\u043e\u0434\u0430\u0436 \u043f\u043e \u043a\u0430\u0436\u0434\u043e\u043c\u0443 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0443.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%9F%D1%80%D0%B8%D0%BC%D0%B5%D1%80%D1%8B_%D1%80%D0%B0%D0%B1%D0%BE%D1%82%D1%8B\"><\/span>\u041f\u0440\u0438\u043c\u0435\u0440\u044b \u0440\u0430\u0431\u043e\u0442\u044b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u0430\u043b\u0435\u0435 \u0431\u0443\u0434\u0443\u0442 \u043f\u0440\u0438\u0432\u0435\u0434\u0435\u043d\u044b \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043d\u0430\u0433\u043b\u044f\u0434\u043d\u044b\u0445 \u043f\u0440\u0438\u043c\u0435\u0440\u043e\u0432 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f group by \u0432 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u043c \u043a\u043e\u0434\u0435. \u0421\u0430\u043c \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043b\u0435\u0433\u043a\u043e: \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u0443\u043a\u0430\u0437\u0430\u0442\u044c \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u0435 \u043a\u043b\u044e\u0447\u0435\u0432\u043e\u0435 \u0441\u043b\u043e\u0432\u043e \u0438 \u043f\u0440\u043e\u043f\u0438\u0441\u0430\u0442\u044c \u043f\u043e\u043b\u044f, \u043f\u043e \u043a\u043e\u0442\u043e\u0440\u044b\u043c \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0433\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"203\" height=\"60\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-121.png\" alt=\"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL\" class=\"wp-image-6647\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-121.png 203w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-121-150x44.png 150w\" sizes=\"auto, (max-width: 203px) 100vw, 203px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-121.png\",\"width\":\"203\",\"height\":\"60\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412 Select as \u0440\u0430\u0437\u043c\u0435\u0449\u0430\u044e\u0442 \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043b\u043e\u043a\u0430\u0446\u0438\u0438. \u0414\u0430\u043d\u043d\u044b\u0435 \u0431\u0443\u0434\u0443\u0442 \u0433\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u043f\u043e \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0441\u0442\u043e\u043b\u0431\u0446\u0443. \u0427\u0442\u043e\u0431\u044b \u0443\u0432\u0438\u0434\u0435\u0442\u044c \u0438\u043c\u0435\u043d\u0430 \u0441\u043e\u0437\u0434\u0430\u043d\u043d\u044b\u0445 \u0433\u0440\u0443\u043f\u043f, \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u0432\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u0439 \u0437\u0430\u043f\u0438\u0441\u044c\u044e group by:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"236\" height=\"59\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-122.png\" alt=\"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL\" class=\"wp-image-6648\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-122.png 236w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-122-150x38.png 150w\" sizes=\"auto, (max-width: 236px) 100vw, 236px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-122.png\",\"width\":\"236\",\"height\":\"59\"}<\/script><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"315\" height=\"150\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-123.png\" alt=\"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL\" class=\"wp-image-6649\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-123.png 315w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-123-300x143.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-123-150x71.png 150w\" sizes=\"auto, (max-width: 315px) 100vw, 315px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-123.png\",\"width\":\"315\",\"height\":\"150\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0415\u0441\u043b\u0438 \u043f\u043e\u0441\u043c\u043e\u0442\u0440\u0435\u0442\u044c \u043d\u0430 \u043d\u0435\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0430\u043d\u043d\u0443\u044e \u0447\u0430\u0441\u0442\u044c \u0442\u0430\u0431\u043b\u0438\u0446\u044b, \u043c\u043e\u0436\u043d\u043e \u0437\u0430\u043c\u0435\u0442\u0438\u0442\u044c 4 \u0441\u0442\u0440\u043e\u0447\u043a\u0438 \u0441 \u043b\u043e\u043a\u0430\u0446\u0438\u0435\u0439 HQ, \u0434\u0432\u0435 \u2013 \u0441 Downtown \u0438 1<sup>st<\/sup> street.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"592\" height=\"273\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-129.png\" alt=\"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL\" class=\"wp-image-6655\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-129.png 592w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-129-300x138.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-129-150x69.png 150w\" sizes=\"auto, (max-width: 592px) 100vw, 592px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-129.png\",\"width\":\"592\",\"height\":\"273\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u0440\u0438 grouping by location \u0431\u0430\u0437\u0430 \u0432\u043e\u0437\u044c\u043c\u0435\u0442 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u0432\u0445\u043e\u0434\u043d\u044b\u0435 \u0441\u0442\u0440\u043e\u043a\u0438 \u0438 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0438\u0442 \u0441\u0440\u0435\u0434\u0438 \u043d\u0438\u0445 \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u044b\u0435 \u043b\u043e\u043a\u0430\u0446\u0438\u0438. \u041e\u043d\u0438 \u0431\u0443\u0434\u0443\u0442 \u0432\u044b\u0441\u0442\u0443\u043f\u0430\u0442\u044c \u0432 \u0432\u0438\u0434\u0435 \u00ab\u0433\u0440\u0443\u043f\u043f\u00bb, \u043f\u043e \u043a\u043e\u0442\u043e\u0440\u044b\u043c \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0434\u0430\u043b\u044c\u043d\u0435\u0439\u0448\u0430\u044f \u043a\u043b\u0430\u0441\u0441\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0415\u0441\u043b\u0438 \u0432\u044b\u0431\u0440\u0430\u0442\u044c \u0441\u0442\u043e\u043b\u0431\u0435\u0446 product, \u043a\u043e\u043c\u0430\u043d\u0434\u0430 \u0431\u0443\u0434\u0435\u0442 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0438\u043d\u043e\u0439:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"236\" height=\"106\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-130.png\" alt=\"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL\" class=\"wp-image-6656\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-130.png 236w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-130-150x67.png 150w\" sizes=\"auto, (max-width: 236px) 100vw, 236px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-130.png\",\"width\":\"236\",\"height\":\"106\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u043e\u043c \u0441\u0442\u0430\u043d\u0435\u0442 \u043e\u0448\u0438\u0431\u043a\u0430:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"936\" height=\"30\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-125.png\" alt=\"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL\" class=\"wp-image-6651\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-125.png 936w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-125-300x10.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-125-150x5.png 150w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-125-768x25.png 768w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-125-900x30.png 900w\" sizes=\"auto, (max-width: 936px) 100vw, 936px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-125.png\",\"width\":\"936\",\"height\":\"30\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u0432\u044f\u0437\u0430\u043d\u043e \u044d\u0442\u043e \u0441 \u0442\u0435\u043c, \u0447\u0442\u043e 8 \u0441\u0442\u0440\u043e\u043a, \u0438\u043c\u0435\u044e\u0449\u0438\u0445\u0441\u044f \u0432 \u0431\u0430\u0437\u0435, \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 group by \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u043f\u043e\u043f\u044b\u0442\u0430\u043b\u0441\u044f \u00ab\u043f\u043e\u043c\u0435\u0441\u0442\u0438\u0442\u044c\u00bb \u0432 3. \u041e\u0441\u0442\u0430\u0432\u0448\u0438\u0435\u0441\u044f \u0441\u0442\u043e\u043b\u0431\u0446\u044b \u043d\u0435 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u0441\u044f \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0442\u044c \u043f\u0440\u043e\u0441\u0442\u043e \u0442\u0430\u043a. \u0414\u043b\u044f \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432\u0441\u0435\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u0438\u0437 \u0442\u0430\u0431\u043b\u0438\u0446\u044b \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u0432\u044b\u0434\u0435\u043b\u0438\u0442\u044c \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0443\u044e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e \u0438\u0437 \u00ab\u043e\u0441\u0442\u0430\u0442\u043a\u0430\u00bb \u0432 \u0442\u0440\u0438 \u043b\u043e\u043a\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0435 groups. \u042d\u0442\u043e \u0437\u043d\u0430\u0447\u0438\u0442, \u0447\u0442\u043e \u0441\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u0434\u043e\u043b\u0436\u043d\u044b \u0431\u044b\u0442\u044c \u0438\u043b\u0438 \u0430\u0433\u0440\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u044b, \u0438\u043b\u0438 \u043d\u0430\u0434 \u043d\u0438\u043c\u0438 \u043e\u0431\u044f\u0437\u0430\u0442\u0435\u043b\u044c\u043d\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u044e\u0442\u0441\u044f \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f \u0434\u043b\u044f \u0432\u044b\u0432\u043e\u0434\u0430 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0445 \u0434\u0430\u043d\u043d\u044b\u0445.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%90%D0%B3%D1%80%D0%B5%D0%B3%D0%B0%D1%82%D0%BD%D1%8B%D0%B5_%D1%84%D1%83%D0%BD%D0%BA%D1%86%D0%B8%D0%B8\"><\/span>\u0410\u0433\u0440\u0435\u0433\u0430\u0442\u043d\u044b\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u0430\u043b\u0435\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u043e\u0438\u0442 \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0435\u0442\u044c \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u0438\u043c\u0435\u0440\u043e\u0432 \u0441 \u0430\u0433\u0440\u0435\u0433\u0430\u0442\u043d\u044b\u043c\u0438 \u0444\u0443\u043d\u043a\u0446\u0438\u044f\u043c\u0438 \u043e\u0442\u043d\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u043e group by. \u041a\u0430\u0436\u0434\u0430\u044f \u0437\u0430\u043f\u0438\u0441\u044c \u0432 sales \u2013 \u044d\u0442\u043e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u043e\u0434\u043d\u043e\u0439 \u043f\u0440\u043e\u0434\u0430\u0436\u0435. \u042d\u0442\u043e \u0437\u043d\u0430\u0447\u0438\u0442, \u0447\u0442\u043e \u0447\u0438\u0441\u043b\u043e \u043f\u0440\u043e\u0434\u0430\u0436 \u043f\u043e \u043b\u043e\u043a\u0430\u0446\u0438\u0438 = \u0441\u0442\u0440\u043e\u043a\u0438 \u0432 \u043a\u0430\u0436\u0434\u043e\u0439 \u0433\u0440\u0443\u043f\u043f\u0435 \u043f\u0440\u0438 \u0440\u0430\u0437\u0434\u0435\u043b\u0435\u043d\u0438\u0438 \u043f\u043e \u043b\u043e\u043a\u0430\u0446\u0438\u044f\u043c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u043b\u044f \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u043e \u0442\u043e\u043c, \u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0432 \u043a\u0430\u0436\u0434\u043e\u043c \u00ab\u043c\u0435\u0441\u0442\u0435\u00bb \u0431\u044b\u043b\u043e \u043f\u0440\u043e\u0434\u0430\u043d\u043e \u043f\u0440\u043e\u0434\u0443\u043a\u0446\u0438\u0438, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0442\u0430\u043a\u0430\u044f \u0437\u0430\u043f\u0438\u0441\u044c \u0441 group by:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"298\" height=\"96\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-127.png\" alt=\"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL\" class=\"wp-image-6653\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-127.png 298w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-127-150x48.png 150w\" sizes=\"auto, (max-width: 298px) 100vw, 298px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-127.png\",\"width\":\"298\",\"height\":\"96\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u041f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 count \u0432\u044b\u0447\u0438\u0441\u043b\u044f\u0435\u0442\u0441\u044f \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0441\u0442\u0440\u043e\u043a \u0432 \u043a\u0430\u0436\u0434\u043e\u0439 \u0433\u0440\u0443\u043f\u043f\u0435. \u0421 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f\u043c\u0438 \u043a\u043e\u043c\u0430\u043d\u0434\u0430 \u0442\u043e\u0436\u0435 \u0441\u043e\u0432\u043c\u0435\u0449\u0430\u0435\u0442\u0441\u044f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0411\u0430\u0437\u0430 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u0442 \u0437\u0430\u043f\u0440\u043e\u0441 \u0442\u0430\u043a:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>from sales \u2013 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u0435 \u0432\u0441\u0435\u0445 \u0437\u0430\u043f\u0438\u0441\u0435\u0439 \u0438\u0437 \u0442\u0430\u0431\u043b\u0438\u0446\u044b sales;<\/li>\n\n\n\n<li>group by location \u2013 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u044b\u0445 \u0433\u0440\u0443\u043f\u043f \u043f\u043e \u0442\u0438\u043f\u0443 \u043b\u043e\u043a\u0430\u0446\u0438\u0439;<\/li>\n\n\n\n<li>select\u2026 \u2013 \u0432\u044b\u0431\u043e\u0440 \u0438\u043c\u0435\u043d\u0438 \u00ab\u043c\u0435\u0441\u0442\u0430\u00bb \u0438 \u0441\u0447\u0435\u0442 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u0430 \u0441\u0442\u0440\u043e\u043a \u0432 \u0433\u0440\u0443\u043f\u043f\u0435.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u043b\u044f \u0432\u044b\u0432\u043e\u0434\u0430 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u0432 \u0447\u0438\u0442\u0430\u0431\u0435\u043b\u044c\u043d\u043e\u0439 \u0444\u043e\u0440\u043c\u0435, \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0441\u0442\u0440\u043e\u043a (\u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442) \u0431\u0443\u0434\u0435\u0442 \u0438\u043c\u0435\u0442\u044c \u043f\u0441\u0435\u0432\u0434\u043e\u043d\u0438\u043c as number_of_sales. \u0418\u0442\u043e\u0433\u043e\u0432\u0430\u044f \u0442\u0430\u0431\u043b\u0438\u0446\u0430 \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u0435\u0442 \u0434\u0432\u0435 \u043a\u043e\u043b\u043e\u043d\u043a\u0438:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"307\" height=\"161\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-126.png\" alt=\"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL\" class=\"wp-image-6652\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-126.png 307w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-126-300x157.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-126-150x79.png 150w\" sizes=\"auto, (max-width: 307px) 100vw, 307px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-126.png\",\"width\":\"307\",\"height\":\"161\"}<\/script><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%A1%D1%83%D0%BC%D0%BC%D0%B0\"><\/span><em>\u0421\u0443\u043c\u043c\u0430<\/em><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Sum \u2013 \u043a\u043e\u043c\u0430\u043d\u0434\u0430, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u043c\u043e\u0433\u0430\u0435\u0442 \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 group by \u0441\u0443\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e. \u041f\u0440\u0438\u043c\u0435\u0440 \u2013 \u0440\u0430\u0441\u0447\u0435\u0442 \u043e\u0431\u0449\u0435\u0439 \u0432\u044b\u0440\u0443\u0447\u043a\u0438 \u0432 \u043a\u0430\u0436\u0434\u043e\u043c \u0433\u043e\u0440\u043e\u0434\u0435:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"282\" height=\"101\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-132.png\" alt=\"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL\" class=\"wp-image-6658\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-132.png 282w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-132-150x54.png 150w\" sizes=\"auto, (max-width: 282px) 100vw, 282px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-132.png\",\"width\":\"282\",\"height\":\"101\"}<\/script><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"313\" height=\"157\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-134.png\" alt=\"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL\" class=\"wp-image-6660\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-134.png 313w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-134-300x150.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-134-150x75.png 150w\" sizes=\"auto, (max-width: 313px) 100vw, 313px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-134.png\",\"width\":\"313\",\"height\":\"157\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u044b\u0448\u0435 \u2013 \u043f\u0440\u0438\u043c\u0435\u0440 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u0433\u043e \u0437\u0430\u043f\u0440\u043e\u0441\u0430.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%A1%D1%80%D0%B5%D0%B4%D0%BD%D0%B5%D0%B5_%D0%B7%D0%BD%D0%B0%D1%87%D0%B5%D0%BD%D0%B8%D0%B5\"><\/span><em>\u0421\u0440\u0435\u0434\u043d\u0435\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435<\/em><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u043b\u044f \u0440\u0430\u0441\u0447\u0435\u0442\u0430 \u0441\u0440\u0435\u0434\u043d\u0435\u0433\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0432 group by \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f AVG:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"443\" height=\"102\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-124.png\" alt=\"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL\" class=\"wp-image-6650\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-124.png 443w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-124-300x69.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-124-150x35.png 150w\" sizes=\"auto, (max-width: 443px) 100vw, 443px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-124.png\",\"width\":\"443\",\"height\":\"102\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u043e\u0442 \u2013 \u043f\u0440\u0438\u043c\u0435\u0440 \u0441\u0440\u0435\u0434\u043d\u0435\u0439 \u0441\u0443\u043c\u043c\u044b \u0432\u044b\u0440\u0443\u0447\u043a\u0438.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%9D%D0%B5%D1%81%D0%BA%D0%BE%D0%BB%D1%8C%D0%BA%D0%BE_%D0%B3%D1%80%D1%83%D0%BF%D0%BF\"><\/span><em>\u041d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0433\u0440\u0443\u043f\u043f<\/em><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u0427\u0442\u043e\u0431\u044b \u0440\u0430\u0437\u0434\u0435\u043b\u0438\u0442\u044c \u0433\u0440\u0443\u043f\u043f\u044b \u043d\u0430 \u043f\u043e\u0434\u0433\u0440\u0443\u043f\u043f\u044b \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u0434\u043e\u0431\u0430\u0432\u0438\u0442\u044c \u043a \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0438\u044e group by \u0432\u0442\u043e\u0440\u043e\u0435 \u0443\u0441\u043b\u043e\u0432\u0438\u0435 \u043a\u043b\u0430\u0441\u0441\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"277\" height=\"61\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-136.png\" alt=\"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL\" class=\"wp-image-6662\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-136.png 277w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-136-150x33.png 150w\" sizes=\"auto, (max-width: 277px) 100vw, 277px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-136.png\",\"width\":\"277\",\"height\":\"61\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0435\u043d \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 select. Order by \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u043e \u0434\u043b\u044f \u0443\u0434\u043e\u0431\u0441\u0442\u0432\u0430:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"363\" height=\"134\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-137.png\" alt=\"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL\" class=\"wp-image-6663\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-137.png 363w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-137-300x111.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-137-150x55.png 150w\" sizes=\"auto, (max-width: 363px) 100vw, 363px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-137.png\",\"width\":\"363\",\"height\":\"134\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u043e\u0442 \u043f\u0440\u0438\u043c\u0435\u0440 \u043f\u0440\u043e\u0434\u0430\u0436 \u043f\u043e \u043a\u0430\u0436\u0434\u043e\u043c\u0443 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0443:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"339\" height=\"140\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-135.png\" alt=\"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL\" class=\"wp-image-6661\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-135.png 339w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-135-300x124.png 300w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-135-150x62.png 150w\" sizes=\"auto, (max-width: 339px) 100vw, 339px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-135.png\",\"width\":\"339\",\"height\":\"140\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u041d\u0438\u0447\u0435\u0433\u043e \u0442\u0440\u0443\u0434\u043d\u043e\u0433\u043e \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435 \u043d\u0435\u0442. \u041d\u043e group by \u043c\u043e\u0436\u0435\u0442 \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c \u0441 \u0444\u0443\u043d\u043a\u0446\u0438\u044f\u043c\u0438.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%D0%98%D1%81%D0%BF%D0%BE%D0%BB%D1%8C%D0%B7%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5_%D1%84%D1%83%D0%BD%D0%BA%D1%86%D0%B8%D0%B9\"><\/span><em>\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0439<\/em><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">\u041c\u043e\u0436\u043d\u043e \u043f\u043e\u043f\u044b\u0442\u0430\u0442\u044c\u0441\u044f \u043d\u0430\u0439\u0442\u0438 \u043e\u0431\u0449\u0435\u0435 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u043f\u0440\u043e\u0434\u0430\u0436 \u0432 \u0434\u0435\u043d\u044c. \u0414\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0448\u0430\u0431\u043b\u043e\u043d, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u043b\u0441\u044f \u0441\u043e \u0441\u0442\u043e\u043b\u0431\u0446\u043e\u043c sold_at:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"270\" height=\"121\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-133.png\" alt=\"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL\" class=\"wp-image-6659\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-133.png 270w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-133-150x67.png 150w\" sizes=\"auto, (max-width: 270px) 100vw, 270px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-133.png\",\"width\":\"270\",\"height\":\"121\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u043b\u044f \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u043d\u0443\u0436\u043d\u043e\u043c \u0444\u043e\u0440\u043c\u0430\u0442\u0435 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u043a\u043e\u043d\u0432\u0435\u0440\u0442\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0434\u0430\u0442\u044b \u0438 \u0432\u0440\u0435\u043c\u0435\u043d\u0438 \u0434\u043b\u044f \u043a\u0430\u0436\u0434\u043e\u0439 \u0437\u0430\u043f\u0438\u0441\u0438 \u0432 \u043e\u0431\u044b\u0447\u043d\u0443\u044e \u0434\u0430\u0442\u0443. \u041f\u043e\u0441\u043b\u0435 \u2013 \u0432\u0441\u0435 \u0437\u0430\u043f\u0438\u0441\u0438 \u043e \u043f\u0440\u043e\u0434\u0430\u0436\u0430\u0445, \u0441\u043e\u0432\u0435\u0440\u0448\u0435\u043d\u043d\u044b\u0445 \u0432 \u043e\u0434\u0438\u043d \u0438 \u0442\u043e\u0442 \u0436\u0435 \u0434\u0435\u043d\u044c, \u043e\u0442\u043d\u0435\u0441\u0442\u0438 \u043a \u043e\u0434\u043d\u043e\u0439 \u00ab\u043e\u0431\u0449\u0435\u0439\u00bb \u0433\u0440\u0443\u043f\u043f\u0435.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"291\" height=\"121\" src=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-131.png\" alt=\"\u0413\u0440\u0443\u043f\u043f\u0438\u0440\u043e\u0432\u043a\u0430 \u0432 SQL\" class=\"wp-image-6657\" srcset=\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-131.png 291w, https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-131-150x62.png 150w\" sizes=\"auto, (max-width: 291px) 100vw, 291px\" \/><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"ImageObject\",\"url\":\"https:\/\/otus.ru\/journal\/wp-content\/uploads\/2023\/06\/image-131.png\",\"width\":\"291\",\"height\":\"121\"}<\/script><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.youtube.com\/watch?v=s9cO5JECMNo\">\u0417\u0434\u0435\u0441\u044c<\/a> \u043c\u043e\u0436\u043d\u043e \u0443\u0432\u0438\u0434\u0435\u0442\u044c \u0431\u043e\u043b\u044c\u0448\u0435 \u043f\u0440\u0438\u043c\u0435\u0440\u043e\u0432 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0438\u0437\u0443\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u0430. <em>\u041f\u0440\u043e\u043a\u0430\u0447\u0430\u0442\u044c\u00a0<a href=\"https:\/\/otus.ru\/lessons\/subd\/?utm_source=oj&amp;utm_medium=affilate&amp;utm_campaign=subd\" target=\"_blank\" rel=\"noreferrer noopener\">\u043d\u0430\u0432\u044b\u043a\u0438 \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u0431\u0430\u0437\u0430\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u0445<\/a>\u00a0\u043c\u043e\u0436\u043d\u043e \u043d\u0430 \u043a\u0443\u0440\u0441\u0430\u0445 Otus<\/em>.<a href=\"https:\/\/pinterest.com\/pin\/create\/button\/?url=https%3A%2F%2Fotus.ru%2Fjournal%2Fmysql-i-select-opisanie-i-primenenie%2F&amp;media=https%3A%2F%2Fotus.ru%2Fjournal%2Fwp-content%2Fuploads%2F2023%2F04%2Foj-1080x7208-1.jpg&amp;description=MySQL%20%D0%B8%20Select%3A%20%D0%BE%D0%BF%D0%B8%D1%81%D0%B0%D0%BD%D0%B8%D0%B5%20%D0%B8%20%D0%BF%D1%80%D0%B8%D0%BC%D0%B5%D0%BD%D0%B5%D0%BD%D0%B8%D0%B5\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>SQL \u2013 \u044f\u0437\u044b\u043a \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432. \u041e\u043d \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c \u0441 \u0431\u0430\u0437\u0430\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u0421\u0423\u0411\u0414. \u041d\u0430\u0438\u0431\u043e\u043b\u0435\u0435 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u043e\u0439 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f MySQL. \u041e\u043d\u0430 \u043f\u0440\u043e\u0441\u0442\u0430 \u0432 \u043e\u0441\u0432\u043e\u0435\u043d\u0438\u0438 \u0438 \u043f\u043e\u0434\u043e\u0439\u0434\u0435\u0442 \u043a\u0430\u043a \u043d\u043e\u0432\u0438\u0447\u043a\u0430\u043c, \u0442\u0430\u043a \u0438 \u0431\u043e\u043b\u0435\u0435 \u043e\u043f\u044b\u0442\u043d\u044b\u043c \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430\u043c. \u041f\u0440\u0438 \u0440\u0430\u0431\u043e\u0442\u0435 \u0441 \u0442\u0430\u0431\u043b\u0438\u0446\u0430\u043c\u0438 \u0432 \u0431\u0430\u0437\u0430\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0435 \u043a\u043e\u043c\u0430\u043d\u0434\u044b. \u041e\u043d\u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0442 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c \u0442\u0430\u043a\u0438\u0435 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f, \u043a\u0430\u043a \u0432\u044b\u0431\u043e\u0440\u043a\u0430, \u0441\u043e\u0440\u0442\u0438\u0440\u043e\u0432\u043a\u0430 \u0438 \u043f\u0440. \u041e\u0441\u043e\u0431\u043e\u0435 \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u0435 \u0441\u043b\u0435\u0434\u0443\u0435\u0442 [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":6664,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[38],"class_list":["post-6646","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-polza","tag-sql"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All 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