How to cascade delete on self referencing table in MS SQL Server?

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hi how can i cascade delete on self referencing table in ms sql server? im using asp.net C# , i have table Category #id name parent_id and i want every time user delete a parent category , childs categories also delete, sql server dont let me to change the update or insert rule for self refrencing table , whether i have to use trigger or CTE?

Posted 29-Aug-14 0:13am

HDM91

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Rich.Edwards · Answer 1 · 2014-08-29T00:34:00

Solution 1

Drop your existing FK constraint on Child Categories and recreate the FK but add a ON DELETE CASCADE.

Posted 29-Aug-14 0:34am

Rich.Edwards

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HDM91 29-Aug-14 6:42am

i get an error :

Introducing FOREIGN KEY constraint 'FK_Category_Category' on table 'Category' may cause cycles or multiple cascade paths. Specify ON DELETE NO ACTION or ON UPDATE NO ACTION, or modify other FOREIGN KEY constraints.