Posted by Razvan Socol on 01/12/07 07:05

Hi, Barry

Here is how you can generate a script to drop/recreate the defaults
that depend on a given function:

SELECT 'ALTER TABLE '+QUOTENAME(OBJECT_NAME(parent_obj))
+' DROP CONSTRAINT '+QUOTENAME(name)
FROM sysobjects WHERE xtype='D' AND id IN (
SELECT id FROM sysdepends
WHERE depid=OBJECT_ID('YourFunction')
)

SELECT 'ALTER TABLE '+QUOTENAME(OBJECT_NAME(parent_obj))
+' ADD CONSTRAINT '+QUOTENAME(o.name)
+' DEFAULT '+x.text
+' FOR '+QUOTENAME(c.name)
FROM sysobjects o INNER JOIN syscomments x ON o.id=x.id
INNER JOIN syscolumns c ON c.cdefault=o.id
WHERE o.xtype='D' AND o.id IN (
SELECT id FROM sysdepends
WHERE depid=OBJECT_ID('YourFunction')
)

There is a limitation regarding the size of the definition of the
default (x.text in the above query): if it's more than 4000 characters,
the above query won't work (because there would be multiple rows in
syscomments for the same id); but I'm sure nobody would create a
default with a definition longer than 100 characters to invoke a UDF,
so that should not be a problem.

Razvan

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