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Thanks. I always forget 'exec' :D
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if exists (select * from sys.syslogins where Name = 'user1') <br />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sp_droplogin 'user1' --(1)<br />
CREATE LOGIN [user1] WITH PASSWORD= '', CHECK_EXPIRATION=OFF, CHECK_POLICY=OFF --(2)<br />
When I press the execute button of SQL server management studio, I receive the error.
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if exists (select * from sys.syslogins where Name = 'user1') 
	sp_droplogin 'user1' --(1)
CREATE LOGIN [user1] WITH PASSWORD= '', CHECK_EXPIRATION=OFF, CHECK_POLICY=OFF --(2)
When I press the execute button of SQL server management studio, I receive the error.

Msg 102, Level 15, State 1, Line 2  Incorrect syntax near 'sp_droplogin'.

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