BUG: Boolean Expression w/ Subquery and IN Returns Error

Last reviewed: April 28, 1997
Article ID: Q88180

The information in this article applies to:

Microsoft SQL Server version 4.2 for OS/2

BUG# OS/2: 1387 (4.2)

SYMPTOMS

A query of the form

   select "Yes"
   where ((select title_id
   from titles
   where title like "The Busy E%")
      in ("BU1032", "abcd"))

returns error 512, which says:

   Subquery returns more than one value.
   This is illegal when the subquery is used as an expression

Actually, the subquery returns exactly one value, BU1032. The query works correctly if the IN list has just one member.

CAUSE

SQL Server incorrectly analyzes the boolean expression, believing that the subquery returns more than one value.

STATUS

Microsoft has confirmed this to be a problem in SQL Server version 4.2. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

Additional query words: Transact-SQL
Keywords : kbbug4.20 kbprg SSrvGen SSrvServer
Platform : OS/2

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Last reviewed: April 28, 1997
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