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How can I clear a table and reset the identity back to 0?

A. If there are no foreign keys on the table then a simple TRUNCATE TABLE <tbl> will do the trick.

If there are foreign keys then first delete all rows - DELETE <tbl>

Then reset the identity :-

Under 7.0 - DBCC CHECKIDENT(<tbl>,RESEED,0)

Under 6.5 - DBCC CHECKIDENT(<tbl>)

TAGS: SQL Server
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