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03.12.2007 at 10:13AM PDT, ID: 22443932
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9.8

How to Check if Constraint Exists

Asked by dba123 in MS SQL Server

Tags: , ,

How can I put an IF EXISTS for both my creation of the constraint and Drop below to safegard from any errors?

ALTER TABLE PurchaseDownload
DROP CONSTRAINT [FK_PurchaseDownload_ProductFile]

delete from ProductFile
where ProductID in
(select f.ProductID from ProductFile f (nolock)
inner join product p ON p.ProductID = f.ProductID
inner join SellStID ON s.SellStID= p.SellStID
where s.SellStID = 7755
and FileName like '%bbb%')

ALTER TABLE PurchaseDownload WITH NOCHECK
ADD CONSTRAINT [FK_PurchaseDownload_ProductFile] FOREIGN KEY([ProductFileID])
REFERENCES [dbo].[ProductFile] ([ProductFileID])Start Free Trial
[+][-]03.12.2007 at 10:34AM PDT, ID: 18703963

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[+][-]03.12.2007 at 10:37AM PDT, ID: 18703992

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About this solution

Zone: MS SQL Server
Tags: constraint, exists, check
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Solution Provided By: Nightman
Participating Experts: 2
Solution Grade: A
 
 
 
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