{"id":2922,"date":"2021-07-21T08:21:33","date_gmt":"2021-07-21T08:21:33","guid":{"rendered":"https:\/\/www.bearloga.space\/?page_id=2922"},"modified":"2021-07-21T08:21:34","modified_gmt":"2021-07-21T08:21:34","slug":"sqlalchemy-orm-tekstovyj-sql","status":"publish","type":"page","link":"https:\/\/www.bearloga.space\/en\/sqlalchemy-orm-tekstovyj-sql\/","title":{"rendered":"SQLAlchemy ORM \u2014 \u0442\u0435\u043a\u0441\u0442\u043e\u0432\u044b\u0439 SQL"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u0420\u0430\u043d\u0435\u0435 \u0442\u0435\u043a\u0441\u0442\u043e\u0432\u044b\u0439 SQL \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 text () \u0431\u044b\u043b \u043e\u0431\u044a\u044f\u0441\u043d\u0435\u043d \u0441 \u0442\u043e\u0447\u043a\u0438 \u0437\u0440\u0435\u043d\u0438\u044f \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0433\u043e \u044f\u0437\u044b\u043a\u0430 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0439 SQLAlchemy.&nbsp;\u0422\u0435\u043f\u0435\u0440\u044c \u043c\u044b \u043e\u0431\u0441\u0443\u0434\u0438\u043c \u044d\u0442\u043e \u0441 \u0442\u043e\u0447\u043a\u0438 \u0437\u0440\u0435\u043d\u0438\u044f ORM.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041b\u0438\u0442\u0435\u0440\u0430\u043b\u044c\u043d\u044b\u0435 \u0441\u0442\u0440\u043e\u043a\u0438 \u043c\u043e\u0433\u0443\u0442 \u0433\u0438\u0431\u043a\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0441 \u043e\u0431\u044a\u0435\u043a\u0442\u043e\u043c Query, \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u044f \u0438\u0445 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0438 text ().&nbsp;\u0411\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u043e \u043f\u0440\u0438\u043c\u0435\u043d\u0438\u043c\u044b\u0445 \u043c\u0435\u0442\u043e\u0434\u043e\u0432 \u043f\u0440\u0438\u043d\u0438\u043c\u0430\u044e\u0442 \u044d\u0442\u043e.&nbsp;\u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, filter () \u0438 order_by ().<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412 \u043f\u0440\u0438\u0432\u0435\u0434\u0435\u043d\u043d\u043e\u043c \u043d\u0438\u0436\u0435 \u043f\u0440\u0438\u043c\u0435\u0440\u0435 \u043c\u0435\u0442\u043e\u0434 filter () \u043f\u0435\u0440\u0435\u0432\u043e\u0434\u0438\u0442 \u0441\u0442\u0440\u043e\u043a\u0443 \u00abid &lt;3\u00bb \u0432 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440 WHERE &lt;3<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">from sqlalchemy import text\nfor cust in session.query(Customers).filter(text(\"id&lt;3\")):\n   print(cust.name)<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u0433\u0435\u043d\u0435\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0435 \u043d\u0435\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0430\u043d\u043d\u043e\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435 SQL \u043f\u043e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442 \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0444\u0438\u043b\u044c\u0442\u0440\u0430 \u0432 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0438\u0435 WHERE \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043f\u0440\u0438\u0432\u0435\u0434\u0435\u043d\u043d\u043e\u0433\u043e \u043d\u0438\u0436\u0435 \u043a\u043e\u0434\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\nWHERE id&lt;3<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u0418\u0437 \u043d\u0430\u0448\u0438\u0445 \u043f\u0440\u0438\u043c\u0435\u0440\u043e\u0432 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u0442\u0430\u0431\u043b\u0438\u0446\u0435 \u00ab\u041a\u043b\u0438\u0435\u043d\u0442\u044b\u00bb \u0431\u0443\u0434\u0443\u0442 \u0432\u044b\u0431\u0440\u0430\u043d\u044b \u0434\u0432\u0435 \u0441\u0442\u0440\u043e\u043a\u0438 \u0438 \u0441\u0442\u043e\u043b\u0431\u0435\u0446 \u0441 \u0438\u043c\u0435\u043d\u0435\u043c \u0431\u0443\u0434\u0435\u0442 \u043d\u0430\u043f\u0435\u0447\u0430\u0442\u0430\u043d \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\">Ravi Kumar\nKomal Pande\n<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u0427\u0442\u043e\u0431\u044b \u0443\u043a\u0430\u0437\u0430\u0442\u044c \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b \u0441\u0432\u044f\u0437\u044b\u0432\u0430\u043d\u0438\u044f \u0441 SQL \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u0441\u0442\u0440\u043e\u043a, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0439\u0442\u0435 \u0434\u0432\u043e\u0435\u0442\u043e\u0447\u0438\u0435, \u0430 \u0434\u043b\u044f \u0443\u043a\u0430\u0437\u0430\u043d\u0438\u044f \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0439\u0442\u0435 \u043c\u0435\u0442\u043e\u0434 params ().<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">cust = session.query(Customers).filter(text(\"id = :value\")).params(value = 1).one()<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u042d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u044b\u0439 SQL, \u043e\u0442\u043e\u0431\u0440\u0430\u0436\u0430\u0435\u043c\u044b\u0439 \u043d\u0430 \u043a\u043e\u043d\u0441\u043e\u043b\u0438 Python, \u0431\u0443\u0434\u0435\u0442 \u0442\u0430\u043a\u0438\u043c, \u043a\u0430\u043a \u0443\u043a\u0430\u0437\u0430\u043d\u043e \u043d\u0438\u0436\u0435 \u2014<\/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\nWHERE id = ?<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u0427\u0442\u043e\u0431\u044b \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u0441\u0442\u0440\u043e\u043a\u043e\u0432\u044b\u0439 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440, \u0432 \u043c\u0435\u0442\u043e\u0434 from_statement () \u043c\u043e\u0436\u043d\u043e \u043f\u0435\u0440\u0435\u0434\u0430\u0442\u044c \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044e text (), \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0443\u044e \u043f\u043e\u043b\u043d\u044b\u0439 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">session.query(Customers).from_statement(text(\"SELECT * FROM customers\")).all()<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u043f\u0440\u0438\u0432\u0435\u0434\u0435\u043d\u043d\u043e\u0433\u043e \u0432\u044b\u0448\u0435 \u043a\u043e\u0434\u0430 \u0431\u0443\u0434\u0435\u0442 \u043e\u0441\u043d\u043e\u0432\u043d\u044b\u043c \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u043e\u043c SELECT, \u043a\u0430\u043a \u043f\u043e\u043a\u0430\u0437\u0430\u043d\u043e \u043d\u0438\u0436\u0435:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">SELECT * FROM customers<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u041e\u0447\u0435\u0432\u0438\u0434\u043d\u043e, \u0447\u0442\u043e \u0432\u0441\u0435 \u0437\u0430\u043f\u0438\u0441\u0438 \u0432 \u0442\u0430\u0431\u043b\u0438\u0446\u0435 \u043a\u043b\u0438\u0435\u043d\u0442\u043e\u0432 \u0431\u0443\u0434\u0443\u0442 \u0432\u044b\u0431\u0440\u0430\u043d\u044b.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044f text () \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043f\u043e\u0437\u0438\u0446\u0438\u043e\u043d\u043d\u043e \u0441\u0432\u044f\u0437\u0430\u0442\u044c \u0435\u0433\u043e \u0442\u0435\u043a\u0441\u0442\u043e\u0432\u044b\u0439 SQL \u0441 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f\u043c\u0438 \u0441\u0442\u043e\u043b\u0431\u0446\u0430 Core \u0438\u043b\u0438 ORM.&nbsp;\u041c\u044b \u043c\u043e\u0436\u0435\u043c \u0434\u043e\u0441\u0442\u0438\u0447\u044c \u044d\u0442\u043e\u0433\u043e, \u043f\u0435\u0440\u0435\u0434\u0430\u0432\u0430\u044f \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u0441\u0442\u043e\u043b\u0431\u0446\u043e\u0432 \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u043f\u043e\u0437\u0438\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442\u043e\u0432 \u0432 \u043c\u0435\u0442\u043e\u0434 TextClause.columns ().<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">stmt = text(\"SELECT name, id, name, address, email FROM customers\")\nstmt = stmt.columns(Customers.id, Customers.name)\nsession.query(Customers.id, Customers.name).from_statement(stmt).all()<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u0442\u043e\u043b\u0431\u0446\u044b id \u0438 name \u0432\u0441\u0435\u0445 \u0441\u0442\u0440\u043e\u043a \u0431\u0443\u0434\u0443\u0442 \u0432\u044b\u0431\u0440\u0430\u043d\u044b, \u0434\u0430\u0436\u0435 \u0435\u0441\u043b\u0438 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c SQLite \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u0442 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435, \u0441\u0433\u0435\u043d\u0435\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0435 \u043f\u0440\u0438\u0432\u0435\u0434\u0435\u043d\u043d\u044b\u043c \u0432\u044b\u0448\u0435 \u043a\u043e\u0434\u043e\u043c, \u0438 \u043e\u0442\u043e\u0431\u0440\u0430\u0436\u0430\u0435\u0442 \u0432\u0441\u0435 \u0441\u0442\u043e\u043b\u0431\u0446\u044b \u0432 \u043c\u0435\u0442\u043e\u0434\u0435 text () \u2014<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0420\u0430\u043d\u0435\u0435 \u0442\u0435\u043a\u0441\u0442\u043e\u0432\u044b\u0439 SQL \u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u0444\u0443\u043d\u043a\u0446\u0438\u0438 text () \u0431\u044b\u043b \u043e\u0431\u044a\u044f\u0441\u043d\u0435\u043d \u0441 \u0442\u043e\u0447\u043a\u0438 \u0437\u0440\u0435\u043d\u0438\u044f \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0433\u043e \u044f\u0437\u044b\u043a\u0430 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0439 SQLAlchemy.&nbsp;\u0422\u0435\u043f\u0435\u0440\u044c \u043c\u044b \u043e\u0431\u0441\u0443\u0434\u0438\u043c \u044d\u0442\u043e [&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":[],"tags":[],"class_list":["post-2922","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/pages\/2922","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=2922"}],"version-history":[{"count":0,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/pages\/2922\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/media?parent=2922"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/categories?post=2922"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bearloga.space\/en\/wp-json\/wp\/v2\/tags?post=2922"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}