출처 : http://msdn.microsoft.com/ko-kr/library/ms174415.aspx
DECLARE @HashThis
nvarchar(4000);
SELECT @HashThis
= CONVERT(nvarchar(4000),'Passw0rd');
SELECT HashBytes('MD5', @HashThis);
/********************************************
HashBytes (
'<algorithm>', { @input | 'input' } )
<algorithm>::= MD2 |
MD4 | MD5 | SHA | SHA1
********************************************/