{"id":2920,"date":"2021-07-21T08:20:10","date_gmt":"2021-07-21T08:20:10","guid":{"rendered":"https:\/\/www.bearloga.space\/?page_id=2920"},"modified":"2021-07-21T08:20:11","modified_gmt":"2021-07-21T08:20:11","slug":"vozvrashhenie-spiska-i-skalyary","status":"publish","type":"page","link":"https:\/\/www.bearloga.space\/en\/vozvrashhenie-spiska-i-skalyary\/","title":{"rendered":"\u0412\u043e\u0437\u0432\u0440\u0430\u0449\u0435\u043d\u0438\u0435 \u0441\u043f\u0438\u0441\u043a\u0430 \u0438 \u0441\u043a\u0430\u043b\u044f\u0440\u044b"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u0421\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u0435\u0442 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043c\u0435\u0442\u043e\u0434\u043e\u0432 \u043e\u0431\u044a\u0435\u043a\u0442\u0430 Query, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043d\u0435\u043c\u0435\u0434\u043b\u0435\u043d\u043d\u043e \u0432\u044b\u0434\u0430\u044e\u0442 SQL \u0438 \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u044e\u0442 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435, \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0449\u0435\u0435 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u0437\u0430\u0433\u0440\u0443\u0436\u0435\u043d\u043d\u043e\u0439 \u0431\u0430\u0437\u044b \u0434\u0430\u043d\u043d\u044b\u0445.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u043e\u0442 \u043a\u0440\u0430\u0442\u043a\u043e\u0435 \u0438\u0437\u043b\u043e\u0436\u0435\u043d\u0438\u0435 \u0441\u043f\u0438\u0441\u043a\u0430 \u0432\u043e\u0437\u0432\u0440\u0430\u0442\u0430 \u0438 \u0441\u043a\u0430\u043b\u044f\u0440\u043e\u0432 \u2014<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0432\u0441\u0435()<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u0441\u043f\u0438\u0441\u043e\u043a.&nbsp;\u041d\u0438\u0436\u0435 \u043f\u0440\u0438\u0432\u0435\u0434\u0435\u043d\u0430 \u0441\u0442\u0440\u043e\u043a\u0430 \u043a\u043e\u0434\u0430 \u0434\u043b\u044f \u0444\u0443\u043d\u043a\u0446\u0438\u0438 all ().<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">session.query(Customers).all()<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u041a\u043e\u043d\u0441\u043e\u043b\u044c Python \u043e\u0442\u043e\u0431\u0440\u0430\u0436\u0430\u0435\u0442 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435 SQL:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">SELECT customers.id \nAS customers_id, customers.name \nAS customers_name, customers.address \nAS customers_address, customers.email \nAS customers_email\nFROM customers<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u043f\u0435\u0440\u0432\u044b\u0439()<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u041e\u043d \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0435 \u0432 \u0435\u0434\u0438\u043d\u0438\u0446\u0443 \u0438 \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u043f\u0435\u0440\u0432\u044b\u0439 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u0432 \u0432\u0438\u0434\u0435 \u0441\u043a\u0430\u043b\u044f\u0440\u0430<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">SELECT customers.id \nAS customers_id, customers.name \nAS customers_name, customers.address \nAS customers_address, customers.email \nAS customers_email\nFROM customers\nLIMIT ? OFFSET ?<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0435 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b \u0434\u043b\u044f LIMIT \u2014 1, \u0430 \u0434\u043b\u044f OFFSET \u2014 0.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u043e\u0434\u0438\u043d()<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u042d\u0442\u0430 \u043a\u043e\u043c\u0430\u043d\u0434\u0430 \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u0432\u044b\u0431\u0438\u0440\u0430\u0435\u0442 \u0432\u0441\u0435 \u0441\u0442\u0440\u043e\u043a\u0438, \u0438, \u0435\u0441\u043b\u0438 \u0432 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0435 \u043d\u0435\u0442 \u043d\u0438 \u043e\u0434\u043d\u043e\u0433\u043e \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u0430 \u043e\u0431\u044a\u0435\u043a\u0442\u0430 \u0438\u043b\u0438 \u0441\u043e\u0441\u0442\u0430\u0432\u043d\u043e\u0439 \u0441\u0442\u0440\u043e\u043a\u0438, \u0432\u043e\u0437\u043d\u0438\u043a\u0430\u0435\u0442 \u043e\u0448\u0438\u0431\u043a\u0430.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">session.query(Customers).one()<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u043c\u0438 \u043d\u0430\u0439\u0434\u0435\u043d\u043d\u044b\u043c\u0438 \u0440\u044f\u0434\u0430\u043c\u0438 \u2014<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">MultipleResultsFound: Multiple rows were found for one()<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u0442\u0440\u043e\u043a\u0438 \u043d\u0435 \u043d\u0430\u0439\u0434\u0435\u043d\u044b \u2014<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">NoResultFound: No row was found for one()\n<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u041c\u0435\u0442\u043e\u0434 one () \u043f\u043e\u043b\u0435\u0437\u0435\u043d \u0434\u043b\u044f \u0441\u0438\u0441\u0442\u0435\u043c, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u043e-\u0440\u0430\u0437\u043d\u043e\u043c\u0443 \u0431\u0443\u0434\u0443\u0442 \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u0442\u044c \u00ab\u044d\u043b\u0435\u043c\u0435\u043d\u0442\u044b \u043d\u0435 \u043d\u0430\u0439\u0434\u0435\u043d\u044b\u00bb \u0438 \u00ab\u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u043e\u0432 \u043d\u0430\u0439\u0434\u0435\u043d\u044b\u00bb.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0441\u043a\u0430\u043b\u044f\u0440 ()<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u041e\u043d \u0432\u044b\u0437\u044b\u0432\u0430\u0435\u0442 \u043c\u0435\u0442\u043e\u0434 one () \u0438 \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u0443\u0441\u043f\u0435\u0445\u0430 \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 \u043f\u0435\u0440\u0432\u044b\u0439 \u0441\u0442\u043e\u043b\u0431\u0435\u0446 \u0441\u0442\u0440\u043e\u043a\u0438 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">session.query(Customers).filter(Customers.id == 3).scalar()<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u0421\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u0435\u0442 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043c\u0435\u0442\u043e\u0434\u043e\u0432 \u043e\u0431\u044a\u0435\u043a\u0442\u0430 Query, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043d\u0435\u043c\u0435\u0434\u043b\u0435\u043d\u043d\u043e \u0432\u044b\u0434\u0430\u044e\u0442 SQL \u0438 \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u044e\u0442 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435, \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0449\u0435\u0435 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u0437\u0430\u0433\u0440\u0443\u0436\u0435\u043d\u043d\u043e\u0439 \u0431\u0430\u0437\u044b \u0434\u0430\u043d\u043d\u044b\u0445. \u0412\u043e\u0442 \u043a\u0440\u0430\u0442\u043a\u043e\u0435 \u0438\u0437\u043b\u043e\u0436\u0435\u043d\u0438\u0435 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"categories":[103],"tags":[],"class_list":["post-2920","page","type-page","status-publish","hentry","category-sqlalchemy"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/pages\/2920","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/comments?post=2920"}],"version-history":[{"count":0,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/pages\/2920\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/media?parent=2920"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/categories?post=2920"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/tags?post=2920"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}