FIX: Derived Table Generation May Cause Error 206

 Last reviewed: November 7, 1997
Article ID: Q158807
The information in this article applies to:
  • Microsoft SQL Server, version 6.5
BUG #: 15800 (6.50)

SYMPTOMS

If a query used to create a derived table selects a user-defined datatype, selecting from the derived table may cause the following error message: 

   206   16 Operand type clash: %s is incompatible with %s
The following example shows a query that may cause this problem. In the example, au_id from the authors table is a user-defined datatype. 

   use pubs
   go
   select * from (select a.au_id from authors a
   inner join titleauthor ta on a.au_id = ta.au_id
   and a.au_fname = "Albert") as a
   go

WORKAROUND

To work around this problem, do not use derived tables to select data from columns with user-defined data types.

STATUS

Microsoft has confirmed this to be a problem in Microsoft SQL Server version 6.50. This problem has been corrected in U.S. Service Pack 2 for Microsoft SQL Server version 6.5. For more information, contact your primary support provider.

Additional Reference Words: 

Keywords          : kbbug6.50 kbfix6.50.sp2 SSrvGen kbusage
Version           : 6.5
Platform          : WINDOWS

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Last reviewed: November 7, 1997
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