{"id":956,"date":"2021-08-13T13:28:42","date_gmt":"2021-08-13T16:28:42","guid":{"rendered":"http:\/\/jonescarvalho.com\/Blog\/?p=956"},"modified":"2021-08-13T13:29:40","modified_gmt":"2021-08-13T16:29:40","slug":"delete-cascade-sql","status":"publish","type":"post","link":"https:\/\/jonescarvalho.com\/Blog\/?p=956","title":{"rendered":"DELETE CASCADE SQL"},"content":{"rendered":"\n<p>CRIE ESTA PROCEDURE<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CREATE PROCEDURE   dbo.GenerateCascadingDeletes\n  @ParentTable     nvarchar(512),\n  @ParentColumn    sysname,\n  @DeleteCriteria  nvarchar(255)\nAS\nBEGIN\n  SET NOCOUNT ON;\n  DECLARE @sql nvarchar(max) = N'',\n          @src nvarchar(max) = N'SELECT ''DELETE $t$ WHERE $c$ $clause$;'' UNION ALL SELECT \n               ''-- This would delete '' + (SELECT RTRIM(COUNT(*)) FROM $t$ WHERE $c$ $clause$) \n               + '' rows.'';';\n  -- generate deletes for child tables:\n  SELECT @sql = @sql \n    + REPLACE(REPLACE(REPLACE(@src,N'$t$',t),N'$c$',c),N'$clause$',@DeleteCriteria)\n  FROM\n  (\n    SELECT t = QUOTENAME(OBJECT_SCHEMA_NAME(pt.parent_object_id))\n             + '.' + QUOTENAME(OBJECT_NAME(pt.parent_object_id)),\n           c = QUOTENAME(pc.name)\n    FROM sys.foreign_key_columns AS pt\n    INNER JOIN sys.columns AS pc\n       ON pt.parent_object_id = pc.&#91;object_id]\n      AND pt.parent_column_id = pc.column_id\n    INNER JOIN sys.columns AS rc\n       ON pt.referenced_column_id = rc.column_id\n      AND pt.referenced_object_id = rc.&#91;object_id]\n    WHERE pt.referenced_object_id = OBJECT_ID(@ParentTable)\n      AND rc.name = @ParentColumn\n  ) AS x;\n  -- final delete of parent table:\n  SELECT @sql += REPLACE(REPLACE(REPLACE(@src,N'$t$',@ParentTable),\n    N'$c$',@ParentColumn),N'$clause$',@DeleteCriteria);\n  EXEC sys.sp_executesql @sql;\nEND\nGO<\/code><\/pre>\n\n\n\n<p>EXECUTE DESTA FORMA<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>exec dbo.GenerateCascadingDeletes 'Personnel', 'ID', '&lt; 4'<\/code><\/pre>\n\n\n\n<p>ISTO IRA RETORNAR AS TABELAS REFERENCIADAS PARA FAZER O DELETE CASCADE SIMPLES COM AS QUERYS PARA DELETE.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CRIE ESTA PROCEDURE EXECUTE DESTA FORMA ISTO IRA RETORNAR AS TABELAS REFERENCIADAS PARA [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-956","post","type-post","status-publish","format-standard","hentry","category-dicas"],"_links":{"self":[{"href":"https:\/\/jonescarvalho.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/956"}],"collection":[{"href":"https:\/\/jonescarvalho.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jonescarvalho.com\/Blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jonescarvalho.com\/Blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jonescarvalho.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=956"}],"version-history":[{"count":2,"href":"https:\/\/jonescarvalho.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/956\/revisions"}],"predecessor-version":[{"id":958,"href":"https:\/\/jonescarvalho.com\/Blog\/index.php?rest_route=\/wp\/v2\/posts\/956\/revisions\/958"}],"wp:attachment":[{"href":"https:\/\/jonescarvalho.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=956"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jonescarvalho.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=956"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jonescarvalho.com\/Blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=956"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}