Re: Misbehaving query

Bellow, Bambi wrote:
> SQL> select a.*, b.*
> 2 from
> 3 ( select * from junk minus select * from junk2 ) a,
> 4 ( select * from junk2 minus select * from junk ) b;
>
> no rows selected

SELECT a.*

      , b.*
   FROM (SELECT dummy x FROM dual WHERE 1 = 2) a

      , (SELECT dummy x FROM dual) b
  WHERE b.x = a.x(+)
/

SELECT a.*

      , b.*
   FROM (SELECT dummy x FROM dual WHERE 1 = 2) a

      , (SELECT dummy x FROM dual) b
/

You join empty result set of table a, with some rows from table b.

-- 
Vladimir Begun
The statements and opinions expressed here are my own and
do not necessarily represent those of Oracle Corporation.

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Vladimir Begun
  INET: Vladimir.Begun_at_oracle.com

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