Image Data Type

I have a field in my personal table that has image data type as Pic,my SQL code is :

SELECT Department.ID,Department.[Name],Department.CreatedDate,Department.[Pic] ,COUNT([Group].[Name])

FROM Department INNER JOIN [Group] ON Department.ID=[Group].DepartmentID

Group by Department.ID,Department.[Name],Department.CreatedDate,Department.[Pic]

This error occured :

Msg 306, Level 16, State 2, Line 1

The text, ntext, and image data types cannot be compared or sorted, except when using IS NULL or LIKE operator.

Please help me.

Thanks.