MS SQL Server Concepts and Programming Question:
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How To Delete a Login Name in MS SQL Server?

Answer:

If you don't want to keep a login name any more, you should delete it by using the "DROP LOGIN" statement as shown in this tutorial example:

-- Login with "sa"

DROP LOGIN Dba_Login;
GO
Command(s) completed successfully.

-- View login names
SELECT name, sid, type, type_desc FROM sys.server_principals
WHERE type = 'S';
GO
<pre>name sid type type_desc
-------- ----------------------------------- ---- ---------
sa 0x01 S SQL_LOGIN
ggl_DBA 0x348AF32B3B58CB40B67A5F5B7086B96E S SQL_LOGIN</pre>

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