>>Try

* VFP
>> SELECT SPACE(50) as cEmpName, SPACE(10) as cUserID, null as cUsGrLink_pk
>> FROM Users WHERE RECNO() =1
>>* SQL Server
>> SELECT SPACE(50) as cEmpName, SPACE(10) as cUserID, null as cUsGrLink_pk
>>

>
>This gives me the same error:
>SQL: Cannot determine data type of SQL column "column" (Error 1890)Visual FoxPro cannot determine the data type of the specified SQL column because the first record in the field contains a null value.
>
>The funny thing is that it displays some strange characters instead of the column name (lets call them greek for the lack of better description).

Looks like a bug to me because VFP certanly can determine the field type from the first select in the UNION.