hash a SQL row?

Question

Is there a way to md5sum a row in a SQL table to check whether any column has been modified?

I would like to check whether any particular column has been changed ver

Answer 1

If you have SQL Server 2008 or newer you could use:

SELECT HASHBYTES('SHA1', (SELECT TOP 1 * FROM dbo.Table FOR XML RAW))

or

SELECT  
    HASHBYTES('SHA1',(
        SELECT  * 
        FROM    dbo.myTable as  tableToHash 
        where   tableToHash.myUniqueKey=myTable.myUniqueKey 
        FOR XML RAW
    ))                                              as  rowSHA1
from    dbo.myTable;