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Drop constraint if exist syntax
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Forum:
Microsoft SQL Server
Category:
Other
Title:
Drop constraint if exist syntax
Environment versions
SQL Server:
SQL Server 2005
Miscellaneous
Thread ID:
01547008
Message ID:
01547008
Views:
63
Hi,

I have been looking on various sites for the code to drop a constraint if I know the name of the constraint. Each site has a different code. I am confused. I would like something that would work on SQL Server 2005 and SQL Server 2008. What would you recommend?

TIA.

UPDATE. This is the code that works on my SQL Server 2008. Does it look like the right one?:
IF EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[FK_table_name_fk_field]') 
     AND parent_object_id = OBJECT_ID(N'[dbo].[table_name]'))
	BEGIN
		ALTER TABLE [dbo].[table_name] 
		DROP CONSTRAINT [FK_table_name_fk_field]
	END
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