{"id":726,"date":"2025-04-11T11:36:29","date_gmt":"2025-04-11T08:36:29","guid":{"rendered":"https:\/\/mart1n2k.wordpress.com\/?page_id=726"},"modified":"2025-04-11T11:36:29","modified_gmt":"2025-04-11T08:36:29","slug":"sql-seosed-join","status":"publish","type":"page","link":"https:\/\/martinrossakov24.thkit.ee\/wp\/sql-seosed-join\/","title":{"rendered":"SQL \/ seosed &#8211; join"},"content":{"rendered":"\n<p>&#8212;seosed &#8211; join<br>&#8212;f\u00fc\u00fcsiline seos &#8211; on lisatud Foreign key ( constrains &#8211; piirang n\u00e4iteks kontrollida deagrammi)<br>&#8212;loogiline seos &#8211; kui \u00f5igesti kirjutatada select joiniga<\/p>\n\n\n\n<p>Tabelid Employees ja Department<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/mart1n2k.wordpress.com\/wp-content\/uploads\/2025\/04\/b5c69bc6-e1e6-4347-88bd-a6dcd84a963c.png?w=520\" alt=\"\" class=\"wp-image-728\" style=\"width:415px;height:auto\" \/><\/figure>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: sql; title: ; notranslate\" title=\"\">\n--join\nselect * from Employees join department\non Employees.DepartmentId=Department.Id\n<\/pre><\/div>\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/mart1n2k.wordpress.com\/wp-content\/uploads\/2025\/04\/c6f753f7-8fe7-4961-b050-bfc35130af06.png?w=793\" alt=\"\" class=\"wp-image-730\" style=\"width:665px;height:auto\" \/><\/figure>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: sql; title: ; notranslate\" title=\"\">\n--kirjutame lihtsamaks\nselect e.Name, e.Salary, d.DepartmentName from Employees e join department d\non e.DepartmentId=d.Id\n<\/pre><\/div>\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/mart1n2k.wordpress.com\/wp-content\/uploads\/2025\/04\/cf1f0485-ce3c-4f1a-bdb7-2bb9a018bd10.png?w=262\" alt=\"\" class=\"wp-image-732\" \/><\/figure>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: sql; title: ; notranslate\" title=\"\">\n--inner join sama nagu lihtne join\n--n\u00e4itab k\u00f5ik department kus on olemas v\u00e4\u00e4rtus\nselect e.Name, e.Salary, d.DepartmentName from Employees e inner join department d\non e.DepartmentId=d.Id\n<\/pre><\/div>\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/mart1n2k.wordpress.com\/wp-content\/uploads\/2025\/04\/fa548596-0d1d-491a-a6cc-185062816229.png?w=253\" alt=\"\" class=\"wp-image-734\" \/><\/figure>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: sql; title: ; notranslate\" title=\"\">\n--left join\n--n\u00e4itab k\u00f5ike DepartmentName ( null v\u00e4\u00e4rtused )\nselect e.Name, e.Salary, d.DepartmentName from Employees e left join department d\non e.DepartmentId=d.Id\n<\/pre><\/div>\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/mart1n2k.wordpress.com\/wp-content\/uploads\/2025\/04\/85bd141d-38b2-4994-9088-cdd27d3d11d4.png?w=241\" alt=\"\" class=\"wp-image-736\" \/><\/figure>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: sql; title: ; notranslate\" title=\"\">\n--right join\n--n\u00e4itab Department kus Name on null\nselect e.Name, e.Salary, d.DepartmentName from Employees e right join department d\non e.DepartmentId=d.Id\n<\/pre><\/div>\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/mart1n2k.wordpress.com\/wp-content\/uploads\/2025\/04\/aa012c5d-b8a2-4265-a32e-6575670a40f8.png?w=250\" alt=\"\" class=\"wp-image-738\" \/><\/figure>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: sql; title: ; notranslate\" title=\"\">\n--outer join = full outer join\n--n\u00e4itab k\u00f5ik v\u00e4\u00e4rtused kahest tabelist\nselect e.Name, e.Salary, d.DepartmentName from Employees e full outer join department d\non e.DepartmentId=d.Id\n<\/pre><\/div>\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/mart1n2k.wordpress.com\/wp-content\/uploads\/2025\/04\/d8173e92-c2a0-4f16-a5e4-52b71a9d2a3b.png?w=253\" alt=\"\" class=\"wp-image-739\" \/><\/figure>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: sql; title: ; notranslate\" title=\"\">\n--cross join --- n\u00e4itab nii et 1.tabeli v\u00e4\u00e4rtused * 2.tabeli v\u00e4\u00e4rtused\nselect Name, Salary, DepartmentName from Employees cross join department\n<\/pre><\/div>\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/mart1n2k.wordpress.com\/wp-content\/uploads\/2025\/04\/678b38bd-1710-46aa-a6fb-d61567018ea0.png?w=258\" alt=\"\" class=\"wp-image-741\" \/><\/figure>\n\n\n\n<p><strong>&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-TABEL MANAGER JA EMPLOYEES&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/mart1n2k.wordpress.com\/wp-content\/uploads\/2025\/04\/cb6d6afa-3847-4269-9bb1-e4e5d089d561.png?w=572\" alt=\"\" class=\"wp-image-745\" \/><\/figure>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: sql; title: ; notranslate\" title=\"\">\n--- join n\u00e4itab k\u00f5ik managers kus on olemas v\u00e4\u00e4rtus\nselect * from Employees e join manager m\nON e.managerId=m.id\n<\/pre><\/div>\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/mart1n2k.wordpress.com\/wp-content\/uploads\/2025\/04\/2ded1706-70c5-4a9b-89dd-9b6f32a27b56-1.png?w=665\" alt=\"\" class=\"wp-image-748\" \/><\/figure>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: sql; title: ; notranslate\" title=\"\">\n--- left join n\u00e4itab k\u00f5ike  managerName Null v\u00e4rtused\nselect * from Employees e left join manager m \non e.managerId=m.id\n<\/pre><\/div>\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/mart1n2k.wordpress.com\/wp-content\/uploads\/2025\/04\/5bdf0e6b-6e8f-42fc-9c26-7ba51eff85cc.png?w=706\" alt=\"\" class=\"wp-image-749\" \/><\/figure>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: sql; title: ; notranslate\" title=\"\">\n--- right join n\u00e4itab k\u00f5ike  EmployeesName Null v\u00e4rtused\nselect * from Employees e right outer Join manager m\non e.managerId=m.id\n<\/pre><\/div>\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/mart1n2k.wordpress.com\/wp-content\/uploads\/2025\/04\/5456555b-6d05-463d-8a74-87f20f457702.png?w=693\" alt=\"\" class=\"wp-image-750\" \/><\/figure>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: sql; title: ; notranslate\" title=\"\">\n-- -full outer join n\u00e4iteb k\u00f5ik\nSELECT * FROM Employees e FULL OUTER JOIN manager m ON e.managerId = m.id;\n<\/pre><\/div>\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/mart1n2k.wordpress.com\/wp-content\/uploads\/2025\/04\/4a28d929-cf00-4ea9-b806-51ff28c64ab6.png?w=715\" alt=\"\" class=\"wp-image-752\" \/><\/figure>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: sql; title: ; notranslate\" title=\"\">\n-- -cross join n\u00e4itab nii et esimese t\u00e4beli v\u00e4rtused * teisi tabeli v\u00e4rtused\nSELECT * FROM Employees e CROSS JOIN manager m;\n<\/pre><\/div>\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/mart1n2k.wordpress.com\/wp-content\/uploads\/2025\/04\/18dfa291-4aa4-41e2-a255-214bf79371f6.png?w=683\" alt=\"\" class=\"wp-image-755\" \/><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8212;seosed &#8211; join&#8212;f\u00fc\u00fcsiline seos &#8211; on lisatud Foreign key ( constrains &#8211; piirang n\u00e4iteks kontrollida deagrammi)&#8212;loogiline seos &#8211; kui \u00f5igesti [&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-726","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 \/ seosed - join - Martin Rossakov portfoolio<\/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:\/\/martinrossakov24.thkit.ee\/wp\/sql-seosed-join\/\" \/>\n<meta property=\"og:locale\" content=\"et_EE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SQL \/ seosed - join - Martin Rossakov portfoolio\" \/>\n<meta property=\"og:description\" content=\"&#8212;seosed &#8211; 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