Question : Join between LONGVARBINARY and CHAR

Hi,

I am attempting a join between two tables:
JOIN table2.dbo.USERS
  ON table1.dbo.CMS_USERDATA.DATA_VALUE = table2.dbo.USERS.UserGUID

The problem is that the DATA_VALUE column is of type LONGVARBINARY and UserGUID is of type CHAR. This results in the following error:
"Error code 306, SQL state S0001: The text, ntext, and image data types cannot be compared or sorted, except when using IS NULL or LIKE operator."

I attempted to use a LIKE operator instead of the equals operator but I just get the following error:
"Error code 403, SQL state S0002: Invalid operator for data type. Operator equals LIKE, type equals uniqueidentifier."

The contents of DATA_VALUE will always be a string of characters and in theory should match the characters in UserGUID. If DATA_VALUE could be converted to CHAR then it should be able to work but I have no idea how to do that for the following SQL query:

SELECT *
FROM table1.dbo.CMS_USERS
INNER JOIN table1.dbo.CMS_USERDATA
ON table1.dbo.CMS_USERS.USER_ID = table1.dbo.CMS_USERDATA.USER_ID
    JOIN table2.dbo.USERS
    ON table1.dbo.CMS_USERDATA.DATA_VALUE = table2.dbo.USERS.UserGUID
WHERE table1.dbo.CMS_USERDATA.DATA_KEY = 'UserGUID'

Any idea on how I can achieve this JOIN?

Thanks

Answer : Join between LONGVARBINARY and CHAR

change

    ON table1.dbo.CMS_USERDATA.DATA_VALUE = table2.dbo.USERS.UserGUID

to

    ON convert(nvarchar(4000), table1.dbo.CMS_USERDATA.DATA_VALUE) = convert(nvarchar(4000), table2.dbo.USERS.UserGUID)

Just expanding on what conagraman said.