change datatype for multiple columns

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I have 800 tables. Most of the tables have a same column name 'LastModifiedByUserID'. Now, I want to change the datatype of that column in all the tables of my database. Is it possible with a stored procedure or any query rather than writing alter statement in every table.
Thanks in advance.

Posted 21-Mar-13 0:57am

M S Chaitanya

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gvprabu · Accepted Answer · 2013-03-21T01:23:00

Hi
Try This...
Before Do this Operation take your Data Base Backup :-)

SQL

SELECT 'ALTER TABLE '+OBJECT_NAME(C.ID) + ' ALTER COLUMN '+C.Name +' New_DataType'
FROM syscolumns C
INNER JOIN sys.tables T ON T.object_id=C.ID 
WHERE C.NAME = 'LastModifiedByUserID'
-- Note : Data Type is TIMESTAMP, You can't able to change the Data Type Using Script.

Regards,
GVPrabu