{"id":894,"date":"2025-10-27T15:29:26","date_gmt":"2025-10-27T15:29:26","guid":{"rendered":"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/?page_id=894"},"modified":"2025-11-04T08:24:00","modified_gmt":"2025-11-04T08:24:00","slug":"%d0%ba%d0%bb%d1%8a","status":"publish","type":"page","link":"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/%d0%ba%d0%bb%d1%8a\/","title":{"rendered":"\u041a\u043b\u044e\u0447\u0438\u0441"},"content":{"rendered":"\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 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\" style=\"cursor:inherit\">Table of Contents<\/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:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/%d0%ba%d0%bb%d1%8a\/#Primary_Key_%D0%BF%D0%B5%D1%80%D0%B2%D0%B8%D1%87%D0%BD%D1%8B%D0%B9_%D0%BA%D0%BB%D1%8E%D1%87\" >Primary Key (\u043f\u0435\u0440\u0432\u0438\u0447\u043d\u044b\u0439 \u043a\u043b\u044e\u0447)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/%d0%ba%d0%bb%d1%8a\/#Foreign_Key_%D0%B2%D0%BD%D0%B5%D1%88%D0%BD%D0%B8%D0%B9_%D0%BA%D0%BB%D1%8E%D1%87\" >Foreign Key (\u0432\u043d\u0435\u0448\u043d\u0438\u0439 \u043a\u043b\u044e\u0447)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/%d0%ba%d0%bb%d1%8a\/#Unique_Key_%D1%83%D0%BD%D0%B8%D0%BA%D0%B0%D0%BB%D1%8C%D0%BD%D1%8B%D0%B9_%D0%BA%D0%BB%D1%8E%D1%87\" >Unique Key (\u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u044b\u0439 \u043a\u043b\u044e\u0447)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/%d0%ba%d0%bb%d1%8a\/#Simple_Key_%D0%BF%D1%80%D0%BE%D1%81%D1%82%D0%BE%D0%B9_%D0%BA%D0%BB%D1%8E%D1%87\" >Simple Key (\u043f\u0440\u043e\u0441\u0442\u043e\u0439 \u043a\u043b\u044e\u0447)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/%d0%ba%d0%bb%d1%8a\/#Composite_Key_%D1%81%D0%BE%D1%81%D1%82%D0%B0%D0%B2%D0%BD%D0%BE%D0%B9_%D0%BA%D0%BB%D1%8E%D1%87\" >Composite Key (\u0441\u043e\u0441\u0442\u0430\u0432\u043d\u043e\u0439 \u043a\u043b\u044e\u0447)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/%d0%ba%d0%bb%d1%8a\/#Compound_Key_%D1%81%D0%BE%D1%81%D1%82%D0%B0%D0%B2%D0%BD%D0%BE%D0%B9%D0%BA%D0%BE%D0%BC%D0%B1%D0%B8%D0%BD%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%BD%D1%8B%D0%B9_%D0%BA%D0%BB%D1%8E%D1%87\" >Compound Key (\u0441\u043e\u0441\u0442\u0430\u0432\u043d\u043e\u0439\/\u043a\u043e\u043c\u0431\u0438\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043a\u043b\u044e\u0447)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/%d0%ba%d0%bb%d1%8a\/#Superkey_%D1%81%D1%83%D0%BF%D0%B5%D1%80%D0%BA%D0%BB%D1%8E%D1%87\" >Superkey (\u0441\u0443\u043f\u0435\u0440\u043a\u043b\u044e\u0447)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/%d0%ba%d0%bb%d1%8a\/#Candidate_Key_%D0%BA%D0%B0%D0%BD%D0%B4%D0%B8%D0%B4%D0%B0%D1%82%D0%BD%D1%8B%D0%B9_%D0%BA%D0%BB%D1%8E%D1%87\" >Candidate Key (\u043a\u0430\u043d\u0434\u0438\u0434\u0430\u0442\u043d\u044b\u0439 \u043a\u043b\u044e\u0447)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/%d0%ba%d0%bb%d1%8a\/#Alternate_Key_%D0%B0%D0%BB%D1%8C%D1%82%D0%B5%D1%80%D0%BD%D0%B0%D1%82%D0%B8%D0%B2%D0%BD%D1%8B%D0%B9_%D0%BA%D0%BB%D1%8E%D1%87\" >Alternate Key (\u0430\u043b\u044c\u0442\u0435\u0440\u043d\u0430\u0442\u0438\u0432\u043d\u044b\u0439 \u043a\u043b\u044e\u0447)<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Primary_Key_%D0%BF%D0%B5%D1%80%D0%B2%D0%B8%D1%87%D0%BD%D1%8B%D0%B9_%D0%BA%D0%BB%D1%8E%D1%87\"><\/span>Primary Key (\u043f\u0435\u0440\u0432\u0438\u0447\u043d\u044b\u0439 \u043a\u043b\u044e\u0447)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Primary key \u2014 \u044d\u0442\u043e \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u044b\u0439 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440 \u043a\u0430\u0436\u0434\u043e\u0439 \u0437\u0430\u043f\u0438\u0441\u0438 \u0432 \u0442\u0430\u0431\u043b\u0438\u0446\u0435.<br>\u0412 \u043e\u0434\u043d\u043e\u0439 \u0442\u0430\u0431\u043b\u0438\u0446\u0435 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0442\u043e\u043b\u044c\u043a\u043e \u043e\u0434\u0438\u043d \u043f\u0435\u0440\u0432\u0438\u0447\u043d\u044b\u0439 \u043a\u043b\u044e\u0447.<br>\u041e\u043d \u043d\u0435 \u043c\u043e\u0436\u0435\u0442 \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0442\u044c NULL \u0438 \u0434\u043e\u043b\u0436\u0435\u043d \u0431\u044b\u0442\u044c \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u044b\u043c.<\/p>\n\n\n\n<p><strong>\u041f\u0440\u0438\u043c\u0435\u0440 (\u0442\u0430\u0431\u043b\u0438\u0446\u0430 \u00ab\u0421\u0442\u0443\u0434\u0435\u043d\u0442\u044b\u00bb):<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"210\" height=\"60\" src=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/0B90B33D-2719-4EFE-80A8-962E3A770EE1.png\" alt=\"\" class=\"wp-image-919\" style=\"width:420px;height:auto\" srcset=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/0B90B33D-2719-4EFE-80A8-962E3A770EE1.png 210w, https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/0B90B33D-2719-4EFE-80A8-962E3A770EE1-150x43.png 150w\" sizes=\"auto, (max-width: 210px) 100vw, 210px\" \/><\/figure>\n\n\n\n<p>\u041a\u043e\u0434 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0442\u0430\u0431\u043b\u0438\u0446\u044b:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE Uliopilased (\nID_uliopilane INT PRIMARY KEY,\nNimi TEXT,\nGrupp TEXT\n);\n\nINSERT INTO Uliopilased (ID_uliopilane, Nimi, Grupp)\nVALUES (1, 'Eldar', 'A1'),\n(2, 'Nikita', 'B1');\n\nSELECT * FROM Uliopilased;\n<\/code><\/pre>\n\n\n\n<p>\u0417\u0434\u0435\u0441\u044c ID_\u0441\u0442\u0443\u0434\u0435\u043d\u0442\u0430 \u2014 \u044d\u0442\u043e Primary Key.<\/p>\n\n\n\n<p>\u0420\u0430\u0437\u043d\u0438\u0446\u0430: Primary key \u043e\u0442\u043b\u0438\u0447\u0430\u0435\u0442\u0441\u044f \u0442\u0435\u043c, \u0447\u0442\u043e \u043e\u043d \u2014 \u0433\u043b\u0430\u0432\u043d\u044b\u0439 \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u044b\u0439 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440 \u0442\u0430\u0431\u043b\u0438\u0446\u044b.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Foreign_Key_%D0%B2%D0%BD%D0%B5%D1%88%D0%BD%D0%B8%D0%B9_%D0%BA%D0%BB%D1%8E%D1%87\"><\/span>Foreign Key (\u0432\u043d\u0435\u0448\u043d\u0438\u0439 \u043a\u043b\u044e\u0447)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Foreign key \u2014 \u044d\u0442\u043e \u0441\u0441\u044b\u043b\u043a\u0430 \u043d\u0430 \u043f\u0435\u0440\u0432\u0438\u0447\u043d\u044b\u0439 \u043a\u043b\u044e\u0447 \u0434\u0440\u0443\u0433\u043e\u0439 \u0442\u0430\u0431\u043b\u0438\u0446\u044b.<br>\u041e\u043d \u0441\u043e\u0437\u0434\u0430\u0451\u0442 \u0441\u0432\u044f\u0437\u044c \u043c\u0435\u0436\u0434\u0443 \u0442\u0430\u0431\u043b\u0438\u0446\u0430\u043c\u0438 (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043c\u0435\u0436\u0434\u0443 \u0441\u0442\u0443\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0438 \u0438\u0445 \u043e\u0446\u0435\u043d\u043a\u0430\u043c\u0438).<\/p>\n\n\n\n<p>\u041f\u0440\u0438\u043c\u0435\u0440:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"219\" height=\"61\" src=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/72A73632-2A11-4B0B-AD68-F6CC5B4D9897.png\" alt=\"\" class=\"wp-image-923\" style=\"width:427px;height:auto\" srcset=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/72A73632-2A11-4B0B-AD68-F6CC5B4D9897.png 219w, https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/72A73632-2A11-4B0B-AD68-F6CC5B4D9897-150x42.png 150w\" sizes=\"auto, (max-width: 219px) 100vw, 219px\" \/><\/figure>\n\n\n\n<p>\u041a\u043e\u0434 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0442\u0430\u0431\u043b\u0438\u0446\u044b:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE Hinded (\nID_hinne INT PRIMARY KEY,\nHinne INT,\nID_uliopilane INT,\nFOREIGN KEY (ID_uliopilane) REFERENCES Uliopilased(ID_uliopilane)\n);\n\nINSERT INTO Hinded (ID_hinne, Hinne, ID_uliopilane)\nVALUES (1, 5, 1),\n(2, 4, 2);\n\nSELECT * FROM Hinded;;<\/code><\/pre>\n\n\n\n<p>\u0417\u0434\u0435\u0441\u044c ID_\u0441\u0442\u0443\u0434\u0435\u043d\u0442\u0430 \u2014 \u044d\u0442\u043e Foreign Key, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0441\u0441\u044b\u043b\u0430\u0435\u0442\u0441\u044f \u043d\u0430 ID_\u0441\u0442\u0443\u0434\u0435\u043d\u0442\u0430 \u0438\u0437 \u0442\u0430\u0431\u043b\u0438\u0446\u044b \u0421\u0442\u0443\u0434\u0435\u043d\u0442\u044b.<\/p>\n\n\n\n<p>\u0420\u0430\u0437\u043d\u0438\u0446\u0430: Foreign key \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u0435\u0442 \u0441\u0432\u044f\u0437\u044c \u043c\u0435\u0436\u0434\u0443 \u0442\u0430\u0431\u043b\u0438\u0446\u0430\u043c\u0438, \u0432 \u043e\u0442\u043b\u0438\u0447\u0438\u0435 \u043e\u0442 Primary key, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u0443\u0435\u0442 \u0437\u0430\u043f\u0438\u0441\u044c \u0432\u043d\u0443\u0442\u0440\u0438 \u043e\u0434\u043d\u043e\u0439 \u0442\u0430\u0431\u043b\u0438\u0446\u044b.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Unique_Key_%D1%83%D0%BD%D0%B8%D0%BA%D0%B0%D0%BB%D1%8C%D0%BD%D1%8B%D0%B9_%D0%BA%D0%BB%D1%8E%D1%87\"><\/span>Unique Key (\u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u044b\u0439 \u043a\u043b\u044e\u0447)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Unique key \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u0435\u0442 \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0432 \u0441\u0442\u043e\u043b\u0431\u0446\u0435, \u043d\u043e \u0432 \u043e\u0442\u043b\u0438\u0447\u0438\u0435 \u043e\u0442 Primary key, \u0435\u0433\u043e \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0432 \u043e\u0434\u043d\u043e\u0439 \u0442\u0430\u0431\u043b\u0438\u0446\u0435.<br>\u041e\u043d \u043c\u043e\u0436\u0435\u0442 \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0442\u044c NULL.<\/p>\n\n\n\n<p>\u041f\u0440\u0438\u043c\u0435\u0440:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"220\" height=\"61\" src=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/233E8D15-F657-467E-806D-DA4363BBB589.png\" alt=\"\" class=\"wp-image-924\" style=\"width:480px;height:auto\" srcset=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/233E8D15-F657-467E-806D-DA4363BBB589.png 220w, https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/233E8D15-F657-467E-806D-DA4363BBB589-150x42.png 150w\" sizes=\"auto, (max-width: 220px) 100vw, 220px\" \/><\/figure>\n\n\n\n<p>\u041a\u043e\u0434 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0442\u0430\u0431\u043b\u0438\u0446\u044b:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE Kontaktid (\nID INT PRIMARY KEY,\nEmail VARCHAR(100) UNIQUE,\nTelefon VARCHAR(20)\n);\n\nINSERT INTO Kontaktid (ID, Email, Telefon)\nVALUES (1, 'khabib@mail.com', '555111'),\n(2, 'nikitos@mail.com', '555222');\n\nSELECT * FROM Kontaktid;<\/code><\/pre>\n\n\n\n<p>\u0417\u0434\u0435\u0441\u044c Email \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c Unique Key, \u0447\u0442\u043e\u0431\u044b \u0430\u0434\u0440\u0435\u0441\u0430 \u043d\u0435 \u043f\u043e\u0432\u0442\u043e\u0440\u044f\u043b\u0438\u0441\u044c.<\/p>\n\n\n\n<p>\u0420\u0430\u0437\u043d\u0438\u0446\u0430: Unique key \u0434\u043e\u043f\u0443\u0441\u043a\u0430\u0435\u0442 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e NULL \u0438 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043d\u0435 \u043e\u0441\u043d\u043e\u0432\u043d\u044b\u043c \u043a\u043b\u044e\u0447\u043e\u043c.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Simple_Key_%D0%BF%D1%80%D0%BE%D1%81%D1%82%D0%BE%D0%B9_%D0%BA%D0%BB%D1%8E%D1%87\"><\/span>Simple Key (\u043f\u0440\u043e\u0441\u0442\u043e\u0439 \u043a\u043b\u044e\u0447)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u041f\u0440\u043e\u0441\u0442\u043e\u0439 \u043a\u043b\u044e\u0447 \u0441\u043e\u0441\u0442\u043e\u0438\u0442 \u0438\u0437 \u043e\u0434\u043d\u043e\u0433\u043e \u043f\u043e\u043b\u044f (\u0441\u0442\u043e\u043b\u0431\u0446\u0430), \u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u043c\u043e\u0436\u0435\u0442 \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u043e \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0437\u0430\u043f\u0438\u0441\u044c.<\/p>\n\n\n\n<p>\u041f\u0440\u0438\u043c\u0435\u0440:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"218\" height=\"65\" src=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/DFE38221-B3A3-4FEF-A698-0EDD3D53F1A3.png\" alt=\"\" class=\"wp-image-939\" style=\"width:372px;height:auto\" srcset=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/DFE38221-B3A3-4FEF-A698-0EDD3D53F1A3.png 218w, https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/DFE38221-B3A3-4FEF-A698-0EDD3D53F1A3-150x45.png 150w\" sizes=\"auto, (max-width: 218px) 100vw, 218px\" \/><\/figure>\n\n\n\n<p>\u041a\u043e\u0434 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0442\u0430\u0431\u043b\u0438\u0446\u044b:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE Uliopilased_Simple (\nID_uliopilane INT PRIMARY KEY,\nNimi VARCHAR(50),\nGrupp VARCHAR(10)\n);\n\nINSERT INTO Uliopilased_Simple (ID_uliopilane, Nimi, Grupp)\nVALUES (\n1, 'Nikita', 'C2'),\n(2, 'Eldar', 'A1'\n);\n\nSELECT * FROM Uliopilased_Simple;<\/code><\/pre>\n\n\n\n<p>\u0420\u0430\u0437\u043d\u0438\u0446\u0430: \u0415\u0441\u043b\u0438 \u043a\u043b\u044e\u0447 \u0441\u043e\u0441\u0442\u043e\u0438\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u0438\u0437 \u043e\u0434\u043d\u043e\u0433\u043e \u0430\u0442\u0440\u0438\u0431\u0443\u0442\u0430, \u043e\u043d \u043f\u0440\u043e\u0441\u0442\u043e\u0439. \u0415\u0441\u043b\u0438 \u0438\u0437 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u2014 \u0441\u043e\u0441\u0442\u0430\u0432\u043d\u043e\u0439 (composite\/compound).<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Composite_Key_%D1%81%D0%BE%D1%81%D1%82%D0%B0%D0%B2%D0%BD%D0%BE%D0%B9_%D0%BA%D0%BB%D1%8E%D1%87\"><\/span>Composite Key (\u0441\u043e\u0441\u0442\u0430\u0432\u043d\u043e\u0439 \u043a\u043b\u044e\u0447)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Composite key \u2014 \u044d\u0442\u043e \u043a\u043b\u044e\u0447, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0441\u043e\u0441\u0442\u043e\u0438\u0442 \u0438\u0437 \u0434\u0432\u0443\u0445 \u0438\u043b\u0438 \u0431\u043e\u043b\u0435\u0435 \u0441\u0442\u043e\u043b\u0431\u0446\u043e\u0432, \u0432\u043c\u0435\u0441\u0442\u0435 \u0441\u043e\u0437\u0434\u0430\u044e\u0449\u0438\u0445 \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u043f\u0438\u0441\u0438.<\/p>\n\n\n\n<p>\u041f\u0440\u0438\u043c\u0435\u0440 (\u0442\u0430\u0431\u043b\u0438\u0446\u0430 \u043e\u0446\u0435\u043d\u043e\u043a):<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"234\" height=\"72\" src=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/59909870-5570-4C81-8324-41F5E0515FC1.png\" alt=\"\" class=\"wp-image-926\" style=\"width:426px;height:auto\" srcset=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/59909870-5570-4C81-8324-41F5E0515FC1.png 234w, https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/59909870-5570-4C81-8324-41F5E0515FC1-150x46.png 150w\" sizes=\"auto, (max-width: 234px) 100vw, 234px\" \/><\/figure>\n\n\n\n<p>\u041a\u043e\u0434 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0442\u0430\u0431\u043b\u0438\u0446\u044b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE Hinded2 (\nID_aine INT,\nID_uliopilane INT,\nHinne INT,\nPRIMARY KEY (ID_aine, ID_uliopilane)\n);\n\nINSERT INTO Hinded2 (ID_aine, ID_uliopilane, Hinne)\nVALUES\n(1, 1, 5),\n(1, 2, 4);\n\nSELECT * FROM Hinded2;<\/code><\/pre>\n\n\n\n<p>\u0423\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u0441\u043e\u0437\u0434\u0430\u0451\u0442\u0441\u044f \u0441\u043e\u0447\u0435\u0442\u0430\u043d\u0438\u0435\u043c ID_\u043f\u0440\u0435\u0434\u043c\u0435\u0442\u0430 + ID_\u0441\u0442\u0443\u0434\u0435\u043d\u0442\u0430.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Compound_Key_%D1%81%D0%BE%D1%81%D1%82%D0%B0%D0%B2%D0%BD%D0%BE%D0%B9%D0%BA%D0%BE%D0%BC%D0%B1%D0%B8%D0%BD%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%BD%D1%8B%D0%B9_%D0%BA%D0%BB%D1%8E%D1%87\"><\/span>Compound Key (\u0441\u043e\u0441\u0442\u0430\u0432\u043d\u043e\u0439\/\u043a\u043e\u043c\u0431\u0438\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043a\u043b\u044e\u0447)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Compound key \u043f\u043e\u0445\u043e\u0436 \u043d\u0430 composite key \u2014 \u044d\u0442\u043e \u043a\u043b\u044e\u0447, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0441\u043e\u0441\u0442\u043e\u0438\u0442 \u0438\u0437 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u043f\u043e\u043b\u0435\u0439, \u043d\u043e \u043d\u0435 \u043e\u0431\u044f\u0437\u0430\u0442\u0435\u043b\u044c\u043d\u043e \u0432\u0441\u0435 \u043f\u043e\u043b\u044f \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u044b \u043f\u043e \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438.<br>\u0418\u043d\u043e\u0433\u0434\u0430 \u043e\u0431\u0430 \u0442\u0435\u0440\u043c\u0438\u043d\u0430 \u0441\u0447\u0438\u0442\u0430\u044e\u0442\u0441\u044f \u0441\u0438\u043d\u043e\u043d\u0438\u043c\u0430\u043c\u0438.<\/p>\n\n\n\n<p>\u041f\u0440\u0438\u043c\u0435\u0440: <\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"247\" height=\"60\" src=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/E8306D91-A9AA-4FCB-8EB2-243485FA4664.png\" alt=\"\" class=\"wp-image-936\" style=\"width:391px;height:auto\" srcset=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/E8306D91-A9AA-4FCB-8EB2-243485FA4664.png 247w, https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/E8306D91-A9AA-4FCB-8EB2-243485FA4664-150x36.png 150w\" sizes=\"auto, (max-width: 247px) 100vw, 247px\" \/><\/figure>\n\n\n\n<p>\u041a\u043e\u0434 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0442\u0430\u0431\u043b\u0438\u0446\u044b:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE Inimesed_Compound (\nNimi VARCHAR(50),\nPerekonnanimi VARCHAR(50),\nSunnikuupaev DATE,\nPRIMARY KEY (Nimi, Perekonnanimi, Sunnikuupaev)\n);\n\nINSERT INTO Inimesed_Compound (Nimi, Perekonnanimi, Sunnikuupaev)\nVALUES (\n'Nikita', 'Orlenko', '2008-10-10'),\n('Eldar', 'Petrov', '2002-08-10'\n);\n\nSELECT * FROM Inimesed_Compound;<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Superkey_%D1%81%D1%83%D0%BF%D0%B5%D1%80%D0%BA%D0%BB%D1%8E%D1%87\"><\/span>Superkey (\u0441\u0443\u043f\u0435\u0440\u043a\u043b\u044e\u0447)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Superkey \u2014 \u044d\u0442\u043e \u043b\u044e\u0431\u043e\u0439 \u043d\u0430\u0431\u043e\u0440 \u0430\u0442\u0440\u0438\u0431\u0443\u0442\u043e\u0432, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043e\u0434\u043d\u043e\u0437\u043d\u0430\u0447\u043d\u043e \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u0443\u0435\u0442 \u0437\u0430\u043f\u0438\u0441\u044c.<br>\u041a\u0430\u0436\u0434\u044b\u0439 Primary key \u2014 \u044d\u0442\u043e Superkey, \u043d\u043e \u043d\u0435 \u043a\u0430\u0436\u0434\u044b\u0439 Superkey \u2014 \u044d\u0442\u043e Primary key.<\/p>\n\n\n\n<p>\u041f\u0440\u0438\u043c\u0435\u0440:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"483\" height=\"138\" src=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/25801753-7D29-4B28-B167-5B641BD87C1B.png\" alt=\"\" class=\"wp-image-929\" srcset=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/25801753-7D29-4B28-B167-5B641BD87C1B.png 483w, https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/25801753-7D29-4B28-B167-5B641BD87C1B-300x86.png 300w, https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/25801753-7D29-4B28-B167-5B641BD87C1B-150x43.png 150w\" sizes=\"auto, (max-width: 483px) 100vw, 483px\" \/><\/figure>\n\n\n\n<p>\u041a\u043e\u0434 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0442\u0430\u0431\u043b\u0438\u0446\u044b:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE Inimesed (\nID INT PRIMARY KEY,\nEmail VARCHAR(100) UNIQUE,\nTelefon VARCHAR(20) UNIQUE\n);\n\nINSERT INTO Inimesed (ID, Email, Telefon)\nVALUES(\n1, 'nikitos@mail.com', '555111'),\n(2, 'eldar@mail.com', '555222'\n);\n\nSELECT * FROM Inimesed;<\/code><\/pre>\n\n\n\n<p>ID, Email, \u0422\u0435\u043b\u0435\u0444\u043e\u043d \u2014 \u0432\u0441\u0451 \u044d\u0442\u043e Superkey, \u0442\u0430\u043a \u043a\u0430\u043a \u043a\u0430\u0436\u0434\u043e\u0435 \u0438\u0437 \u044d\u0442\u0438\u0445 \u043f\u043e\u043b\u0435\u0439 \u043f\u043e \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0434\u0435\u043b\u0430\u0435\u0442 \u0437\u0430\u043f\u0438\u0441\u044c \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u043e\u0439.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Candidate_Key_%D0%BA%D0%B0%D0%BD%D0%B4%D0%B8%D0%B4%D0%B0%D1%82%D0%BD%D1%8B%D0%B9_%D0%BA%D0%BB%D1%8E%D1%87\"><\/span>Candidate Key (\u043a\u0430\u043d\u0434\u0438\u0434\u0430\u0442\u043d\u044b\u0439 \u043a\u043b\u044e\u0447)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Candidate key \u2014 \u044d\u0442\u043e \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0439 \u043a\u043b\u044e\u0447, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u043e\u0436\u0435\u0442 \u0441\u0442\u0430\u0442\u044c \u043f\u0435\u0440\u0432\u0438\u0447\u043d\u044b\u043c.<br>\u0418\u0437 \u0432\u0441\u0435\u0445 \u043a\u0430\u043d\u0434\u0438\u0434\u0430\u0442\u043d\u044b\u0445 \u043a\u043b\u044e\u0447\u0435\u0439 \u0432\u044b\u0431\u0438\u0440\u0430\u044e\u0442 \u043e\u0434\u0438\u043d \u2014 \u043e\u043d \u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u0441\u044f Primary key.<\/p>\n\n\n\n<p>\u041f\u0440\u0438\u043c\u0435\u0440:<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"460\" height=\"93\" src=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/2D682DE2-CEE1-4677-A698-4FF3F2C9995A.png\" alt=\"\" class=\"wp-image-932\" srcset=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/2D682DE2-CEE1-4677-A698-4FF3F2C9995A.png 460w, https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/2D682DE2-CEE1-4677-A698-4FF3F2C9995A-300x61.png 300w, https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/2D682DE2-CEE1-4677-A698-4FF3F2C9995A-150x30.png 150w\" sizes=\"auto, (max-width: 460px) 100vw, 460px\" \/><\/figure>\n\n\n\n<p>\u041a\u043e\u0434 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0442\u0430\u0431\u043b\u0438\u0446\u044b:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE Kandidaadid (\nID INT PRIMARY KEY,\nEmail VARCHAR(100) UNIQUE,\nTelefon VARCHAR(20) UNIQUE\n);\n\nINSERT INTO Kandidaadid (ID, Email, Telefon)\nVALUES (\n1, 'nikitos@mail.com', '555111'\n);\nSELECT * FROM Kandidaadid\n<\/code><\/pre>\n\n\n\n<p>\u041a\u0430\u043d\u0434\u0438\u0434\u0430\u0442\u043d\u044b\u0435 \u043a\u043b\u044e\u0447\u0438: ID, Email, \u0422\u0435\u043b\u0435\u0444\u043e\u043d.<br>\u0412\u044b\u0431\u0440\u0430\u043d\u043d\u044b\u0439 Primary key: ID.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Alternate_Key_%D0%B0%D0%BB%D1%8C%D1%82%D0%B5%D1%80%D0%BD%D0%B0%D1%82%D0%B8%D0%B2%D0%BD%D1%8B%D0%B9_%D0%BA%D0%BB%D1%8E%D1%87\"><\/span>Alternate Key (\u0430\u043b\u044c\u0442\u0435\u0440\u043d\u0430\u0442\u0438\u0432\u043d\u044b\u0439 \u043a\u043b\u044e\u0447)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Alternate key \u2014 \u044d\u0442\u043e \u043a\u0430\u043d\u0434\u0438\u0434\u0430\u0442\u043d\u044b\u0439 \u043a\u043b\u044e\u0447, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043d\u0435 \u0431\u044b\u043b \u0432\u044b\u0431\u0440\u0430\u043d \u043a\u0430\u043a \u043f\u0435\u0440\u0432\u0438\u0447\u043d\u044b\u0439.<\/p>\n\n\n\n<p>\u041f\u0440\u0438\u043c\u0435\u0440:<br><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"503\" height=\"133\" src=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/6CED05FC-9495-4E44-8E02-43A620343594.png\" alt=\"\" class=\"wp-image-933\" srcset=\"https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/6CED05FC-9495-4E44-8E02-43A620343594.png 503w, https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/6CED05FC-9495-4E44-8E02-43A620343594-300x79.png 300w, https:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/wp-content\/uploads\/sites\/2\/2025\/11\/6CED05FC-9495-4E44-8E02-43A620343594-150x40.png 150w\" sizes=\"auto, (max-width: 503px) 100vw, 503px\" \/><\/figure>\n\n\n\n<p>\u041a\u043e\u0434 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0442\u0430\u0431\u043b\u0438\u0446\u044b:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE TABLE Alternatiivsed (\nID INT PRIMARY KEY,\nEmail VARCHAR(100) UNIQUE,\nTelefon VARCHAR(20) UNIQUE\n);\n\nINSERT INTO Alternatiivsed (ID, Email, Telefon)\nVALUES (\n1, 'nikitos@mail.com', '555111')\n\n\nSELECT * FROM Alternatiivsed;<\/code><\/pre>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>\u0418\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438:<\/p>\n\n\n\n<p>\u041a\u043e\u043d\u0441\u043f\u0435\u043a\u0442\u044b \u0437\u0430\u043d\u044f\u0442\u0438\u0439 \u043f\u043e \u0442\u0435\u043c\u0435 &#171;Andmebaasid&#187;<\/p>\n\n\n\n<p>\u0423\u0447\u0435\u0431\u043d\u044b\u0435 \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b\u044b \u043f\u043e \u0431\u0430\u0437\u0430\u043c \u0434\u0430\u043d\u043d\u044b\u0445<\/p>\n\n\n\n<p><a href=\"https:\/\/www.geeksforgeeks.org\/types-of-keys-in-database\">https:\/\/www.geeksforgeeks.org\/types-of-keys-in-database<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.w3schools.com\/sql\/\">https:\/\/www.w3schools.com\/sql\/<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/chat.openai.com\/\">https:\/\/chat.openai.com\/<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Primary Key (\u043f\u0435\u0440\u0432\u0438\u0447\u043d\u044b\u0439 \u043a\u043b\u044e\u0447) Primary key \u2014 \u044d\u0442\u043e \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u044b\u0439 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440 \u043a\u0430\u0436\u0434\u043e\u0439 \u0437\u0430\u043f\u0438\u0441\u0438 \u0432 \u0442\u0430\u0431\u043b\u0438\u0446\u0435.\u0412 \u043e\u0434\u043d\u043e\u0439 \u0442\u0430\u0431\u043b\u0438\u0446\u0435 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0442\u043e\u043b\u044c\u043a\u043e \u043e\u0434\u0438\u043d \u043f\u0435\u0440\u0432\u0438\u0447\u043d\u044b\u0439 \u043a\u043b\u044e\u0447.\u041e\u043d \u043d\u0435 \u043c\u043e\u0436\u0435\u0442 \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0442\u044c NULL \u0438 \u0434\u043e\u043b\u0436\u0435\u043d \u0431\u044b\u0442\u044c \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u044b\u043c. \u041f\u0440\u0438\u043c\u0435\u0440 (\u0442\u0430\u0431\u043b\u0438\u0446\u0430 \u00ab\u0421\u0442\u0443\u0434\u0435\u043d\u0442\u044b\u00bb): \u041a\u043e\u0434 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0442\u0430\u0431\u043b\u0438\u0446\u044b: \u0417\u0434\u0435\u0441\u044c ID_\u0441\u0442\u0443\u0434\u0435\u043d\u0442\u0430 \u2014 \u044d\u0442\u043e Primary Key. \u0420\u0430\u0437\u043d\u0438\u0446\u0430: Primary key \u043e\u0442\u043b\u0438\u0447\u0430\u0435\u0442\u0441\u044f \u0442\u0435\u043c, \u0447\u0442\u043e \u043e\u043d \u2014 \u0433\u043b\u0430\u0432\u043d\u044b\u0439 \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u044b\u0439 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440 \u0442\u0430\u0431\u043b\u0438\u0446\u044b. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-894","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>\u041a\u043b\u044e\u0447\u0438\u0441 - Nikita Orlenko \/ portfoolio \/ RU<\/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:\/\/nikitaorlenko24.thkit.ee\/WP\/ru\/\u043a\u043b\u044a\/\" \/>\n<meta property=\"og:locale\" content=\"ru_RU\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u041a\u043b\u044e\u0447\u0438\u0441 - Nikita Orlenko \/ portfoolio \/ RU\" \/>\n<meta property=\"og:description\" content=\"Primary Key (\u043f\u0435\u0440\u0432\u0438\u0447\u043d\u044b\u0439 \u043a\u043b\u044e\u0447) Primary key \u2014 \u044d\u0442\u043e \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u044b\u0439 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440 \u043a\u0430\u0436\u0434\u043e\u0439 \u0437\u0430\u043f\u0438\u0441\u0438 \u0432 \u0442\u0430\u0431\u043b\u0438\u0446\u0435.\u0412 \u043e\u0434\u043d\u043e\u0439 \u0442\u0430\u0431\u043b\u0438\u0446\u0435 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0442\u043e\u043b\u044c\u043a\u043e \u043e\u0434\u0438\u043d \u043f\u0435\u0440\u0432\u0438\u0447\u043d\u044b\u0439 \u043a\u043b\u044e\u0447.\u041e\u043d \u043d\u0435 \u043c\u043e\u0436\u0435\u0442 \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0442\u044c NULL \u0438 \u0434\u043e\u043b\u0436\u0435\u043d \u0431\u044b\u0442\u044c \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u044b\u043c. \u041f\u0440\u0438\u043c\u0435\u0440 (\u0442\u0430\u0431\u043b\u0438\u0446\u0430 \u00ab\u0421\u0442\u0443\u0434\u0435\u043d\u0442\u044b\u00bb): \u041a\u043e\u0434 \u0434\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0442\u0430\u0431\u043b\u0438\u0446\u044b: \u0417\u0434\u0435\u0441\u044c ID_\u0441\u0442\u0443\u0434\u0435\u043d\u0442\u0430 \u2014 \u044d\u0442\u043e Primary Key. \u0420\u0430\u0437\u043d\u0438\u0446\u0430: Primary key \u043e\u0442\u043b\u0438\u0447\u0430\u0435\u0442\u0441\u044f \u0442\u0435\u043c, \u0447\u0442\u043e \u043e\u043d \u2014 \u0433\u043b\u0430\u0432\u043d\u044b\u0439 \u0443\u043d\u0438\u043a\u0430\u043b\u044c\u043d\u044b\u0439 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440 \u0442\u0430\u0431\u043b\u0438\u0446\u044b. 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