{"id":498,"date":"2025-05-15T08:46:52","date_gmt":"2025-05-15T05:46:52","guid":{"rendered":"https:\/\/prikaz3.wordpress.com\/?page_id=498"},"modified":"2025-10-21T06:43:16","modified_gmt":"2025-10-21T06:43:16","slug":"sql-transaktsioonid","status":"publish","type":"page","link":"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/sql-transaktsioonid\/","title":{"rendered":"SQL transactions"},"content":{"rendered":"\n<p>\u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u043a\u043e\u043d\u0446\u0435\u043f\u0446\u0438\u0438 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0438 \u043e\u043f\u0438\u0441\u044b\u0432\u0430\u044e\u0442\u0441\u044f \u0430\u0431\u0431\u0440\u0435\u0432\u0438\u0430\u0442\u0443\u0440\u043e\u0439 <strong>ACID <\/strong>\u2013<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>A<\/strong>tomicity &#8211;\u00a0\u0410\u0442\u043e\u043c\u0430\u0440\u043d\u043e\u0441\u0442\u044c<\/li>\n\n\n\n<li><strong>C<\/strong>onsistency &#8211;\u00a0\u0421\u043e\u0433\u043b\u0430\u0441\u043e\u0432\u0430\u043d\u043d\u043e\u0441\u0442\u044c<\/li>\n\n\n\n<li><strong>I<\/strong>solation &#8211;\u00a0\u0418\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0441\u0442\u044c<\/li>\n\n\n\n<li><strong>D<\/strong>urability &#8211; \u0414\u043e\u043b\u0433\u043e\u0432\u0435\u0447\u043d\u043e\u0441\u0442\u044c<\/li>\n<\/ul>\n\n\n\n<p>\u0410\u0442\u043e\u043c\u0430\u0440\u043d\u043e\u0441\u0442\u044c &#8211; \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u0442\u0441\u044f \u0446\u0435\u043b\u0438\u043a\u043e\u043c \u0438\u043b\u0438 \u043d\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u0442\u0441\u044f \u0432\u043e\u0432\u0441\u0435.<br><br>\u0421\u043e\u0433\u043b\u0430\u0441\u043e\u0432\u0430\u043d\u043d\u043e\u0441\u0442\u044c &#8211; \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0441 \u0431\u0430\u0437\u043e\u0439 \u0434\u0430\u043d\u043d\u044b\u0445 \u0441\u043e\u0433\u043b\u0430\u0441\u043e\u0432\u0430\u043d\u043d\u0430\u044f \u043c\u0435\u0436\u0434\u0443 \u0441\u043e\u0431\u043e\u0439.<br><br>\u0418\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0441\u0442\u044c &#8211; \u041a\u0430\u0436\u0434\u0430\u044f \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u044f \u0434\u043e\u043b\u0436\u043d\u0430 \u0431\u044b\u0442\u044c \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0430 \u043e\u0442 \u0434\u0440\u0443\u0433\u0438\u0445, \u0442.\u0435. \u0435\u0451 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u043d\u0435 \u0434\u043e\u043b\u0436\u0435\u043d \u0437\u0430\u0432\u0438\u0441\u0435\u0442\u044c \u043e\u0442 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0434\u0440\u0443\u0433\u0438\u0445 \u043f\u0430\u0440\u0430\u043b\u043b\u0435\u043b\u044c\u043d\u044b\u0445 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0439.<br><br>\u0414\u043e\u043b\u0433\u043e\u0432\u0435\u0447\u043d\u043e\u0441\u0442\u044c &#8211; \u042d\u0442\u0430 \u043a\u043e\u043d\u0446\u0435\u043f\u0446\u0438\u044f \u0433\u0430\u0440\u0430\u043d\u0442\u0438\u0440\u0443\u0435\u0442, \u0447\u0442\u043e \u0435\u0441\u043b\u0438 \u043c\u044b \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0438 \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0438\u0435 \u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0438 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0438, \u0442\u043e \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f, \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u044b\u0435 \u044d\u0442\u043e\u0439 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0435\u0439 \u043d\u0435 \u0434\u043e\u043b\u0436\u043d\u044b \u0431\u044b\u0442\u044c \u043e\u0442\u043c\u0435\u043d\u0435\u043d\u044b \u0438\u0437-\u0437\u0430 \u0441\u0431\u043e\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u044b<\/p>\n\n\n\n<p><strong>\u0422\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u044f &#8211; \u044d<\/strong>\u0442\u043e \u043f\u043e\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439, \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u043c\u044b\u0445 \u0432 \u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u043e\u043c \u043f\u043e\u0440\u044f\u0434\u043a\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c, \u043b\u0438\u0431\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043e\u0439, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0441 \u0411\u0414.<\/p>\n\n\n\n<p><strong>\u0414\u043b\u044f \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u044f\u043c\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0435 \u043a\u043e\u043c\u0430\u043d\u0434\u044b:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>COMMIT<\/strong><br>\u0421\u043e\u0445\u0440\u0430\u043d\u044f\u0435\u0442 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f<\/li>\n\n\n\n<li><strong>ROLLBACK<\/strong><br>\u041e\u0442\u043a\u0430\u0442\u044b\u0432\u0430\u0435\u0442 (\u043e\u0442\u043c\u0435\u043d\u044f\u0435\u0442) \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f<\/li>\n\n\n\n<li><strong>SAVEPOINT<\/strong><br>\u0421\u043e\u0437\u0434\u0430\u0451\u0442 \u0442\u043e\u0447\u043a\u0443 \u043a \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0433\u0440\u0443\u043f\u043f\u0430 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0439 \u043c\u043e\u0436\u0435\u0442 \u043e\u0442\u043a\u0430\u0442\u0438\u0442\u044c\u0441\u044f<\/li>\n\n\n\n<li><strong>SET TRANSACTION<\/strong><br>\u0420\u0430\u0437\u043c\u0435\u0449\u0430\u0435\u0442 \u0438\u043c\u044f \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0438.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"340\" height=\"213\" data-src=\"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/1-1.png?w=340\" alt=\"\" class=\"wp-image-507 lazyload\" data-srcset=\"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/1-1.png 340w, https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/1-1-300x188.png 300w\" data-sizes=\"(max-width: 340px) 100vw, 340px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 340px; --smush-placeholder-aspect-ratio: 340\/213;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"478\" height=\"320\" data-src=\"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/2.png?w=478\" alt=\"\" class=\"wp-image-508 lazyload\" data-srcset=\"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/2.png 478w, https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/2-300x201.png 300w\" data-sizes=\"(max-width: 478px) 100vw, 478px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 478px; --smush-placeholder-aspect-ratio: 478\/320;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"384\" height=\"180\" data-src=\"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/3.png?w=384\" alt=\"\" class=\"wp-image-509 lazyload\" data-srcset=\"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/3.png 384w, https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/3-300x141.png 300w\" data-sizes=\"(max-width: 384px) 100vw, 384px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 384px; --smush-placeholder-aspect-ratio: 384\/180;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"473\" height=\"230\" data-src=\"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/4-1.png?w=473\" alt=\"\" class=\"wp-image-511 lazyload\" data-srcset=\"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/4-1.png 473w, https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/4-1-300x146.png 300w\" data-sizes=\"(max-width: 473px) 100vw, 473px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 473px; --smush-placeholder-aspect-ratio: 473\/230;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"238\" height=\"240\" data-src=\"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/5-1.png?w=238\" alt=\"\" class=\"wp-image-512 lazyload\" data-srcset=\"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/5-1.png 238w, https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/5-1-150x150.png 150w\" data-sizes=\"(max-width: 238px) 100vw, 238px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 238px; --smush-placeholder-aspect-ratio: 238\/240;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"477\" height=\"218\" data-src=\"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/6-2.png?w=477\" alt=\"\" class=\"wp-image-513 lazyload\" data-srcset=\"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/6-2.png 477w, https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/6-2-300x137.png 300w\" data-sizes=\"(max-width: 477px) 100vw, 477px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 477px; --smush-placeholder-aspect-ratio: 477\/218;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"325\" height=\"373\" data-src=\"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/7.png?w=325\" alt=\"\" class=\"wp-image-514 lazyload\" data-srcset=\"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/7.png 325w, https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/7-261x300.png 261w\" data-sizes=\"(max-width: 325px) 100vw, 325px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 325px; --smush-placeholder-aspect-ratio: 325\/373;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"335\" height=\"527\" data-src=\"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/8.png?w=335\" alt=\"\" class=\"wp-image-516 lazyload\" data-srcset=\"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/8.png 335w, https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/wp-content\/uploads\/sites\/2\/2025\/05\/8-191x300.png 191w\" data-sizes=\"(max-width: 335px) 100vw, 335px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 335px; --smush-placeholder-aspect-ratio: 335\/527;\" \/><\/figure>\n\n\n\n<p>Xampp &#8211; start transaction not begin<br>With savepoint:<br>start transaction;<br>Savepoint SP1;<br>select * from T;<br>update T set si=5;<br>select * from T;<br>rollback to Savepoint SP1;<br>select * from T<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u043a\u043e\u043d\u0446\u0435\u043f\u0446\u0438\u0438 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0438 \u043e\u043f\u0438\u0441\u044b\u0432\u0430\u044e\u0442\u0441\u044f \u0430\u0431\u0431\u0440\u0435\u0432\u0438\u0430\u0442\u0443\u0440\u043e\u0439 ACID \u2013 \u0410\u0442\u043e\u043c\u0430\u0440\u043d\u043e\u0441\u0442\u044c &#8211; \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u0442\u0441\u044f \u0446\u0435\u043b\u0438\u043a\u043e\u043c \u0438\u043b\u0438 \u043d\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u0442\u0441\u044f \u0432\u043e\u0432\u0441\u0435. \u0421\u043e\u0433\u043b\u0430\u0441\u043e\u0432\u0430\u043d\u043d\u043e\u0441\u0442\u044c &#8211; \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0441 \u0431\u0430\u0437\u043e\u0439 \u0434\u0430\u043d\u043d\u044b\u0445 \u0441\u043e\u0433\u043b\u0430\u0441\u043e\u0432\u0430\u043d\u043d\u0430\u044f \u043c\u0435\u0436\u0434\u0443 \u0441\u043e\u0431\u043e\u0439. \u0418\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0441\u0442\u044c &#8211; \u041a\u0430\u0436\u0434\u0430\u044f \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u044f \u0434\u043e\u043b\u0436\u043d\u0430 \u0431\u044b\u0442\u044c \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0430 \u043e\u0442 \u0434\u0440\u0443\u0433\u0438\u0445, \u0442.\u0435. \u0435\u0451 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u043d\u0435 \u0434\u043e\u043b\u0436\u0435\u043d \u0437\u0430\u0432\u0438\u0441\u0435\u0442\u044c \u043e\u0442 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0434\u0440\u0443\u0433\u0438\u0445 \u043f\u0430\u0440\u0430\u043b\u043b\u0435\u043b\u044c\u043d\u044b\u0445 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0439. \u0414\u043e\u043b\u0433\u043e\u0432\u0435\u0447\u043d\u043e\u0441\u0442\u044c &#8211; \u042d\u0442\u0430 \u043a\u043e\u043d\u0446\u0435\u043f\u0446\u0438\u044f \u0433\u0430\u0440\u0430\u043d\u0442\u0438\u0440\u0443\u0435\u0442, \u0447\u0442\u043e \u0435\u0441\u043b\u0438 \u043c\u044b \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0438 \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0438\u0435 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-with-title","meta":{"footnotes":""},"class_list":["post-498","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>SQL transactions - Roman Prikaztsikov ENG<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/romanprikaztsikov24.thkit.ee\/wp\/eng\/sql-transaktsioonid\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SQL transactions - Roman Prikaztsikov ENG\" \/>\n<meta property=\"og:description\" content=\"\u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u043a\u043e\u043d\u0446\u0435\u043f\u0446\u0438\u0438 \u0442\u0440\u0430\u043d\u0437\u0430\u043a\u0446\u0438\u0438 \u043e\u043f\u0438\u0441\u044b\u0432\u0430\u044e\u0442\u0441\u044f \u0430\u0431\u0431\u0440\u0435\u0432\u0438\u0430\u0442\u0443\u0440\u043e\u0439 ACID \u2013 \u0410\u0442\u043e\u043c\u0430\u0440\u043d\u043e\u0441\u0442\u044c &#8211; 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