Knowledge Base

BUG: CREATE VIEW Fails with Message 8120

Article ID: 171869

Article Last Modified on 10/3/2003

Microsoft SQL Server 6.5 Standard Edition

This article was previously published under Q171869

SYMPTOMS

BUG #: 16728 (NT: 6.5)

A CREATE VIEW statement may fail to create the view, and cause message 8120:

Column is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

This problem occurs if all of the following conditions are true:

The query involves a correlated subquery.
The select list includes the column grouped by.
An operation is performed on the column in the select list.
The same operation is performed on the same column in the GROUP BY.

The following script demonstrates this problem:

   create view viewname
   as
   select 'x'=substring(x,1,1)
   from
   tbl1 a
   where a.y=(select max(y) from tbl1
                            where y = a.y)
   group by substring(x,1,1)

WORKAROUND

To work around this problem, do either of the following:

Rewrite the query, removing the operation from the GROUP BY clause. -or-
Rewrite the query without the correlated subquery.

STATUS

Microsoft has confirmed this to be a problem in Microsoft SQL Server version 6.5. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION

The SELECT statement works fine outside of the view. The GROUP BY clause, as documented, should accept any aggregate free expression. This problem does not occur on SQL Server build 6.5.201.

Keywords: kbbug kbusage KB171869