RE: UNION

Did a little testing.
I think that the columns names are decided by the first select only. The union adds the rows from the second select to the result set created by the first select.
That's mean that your columns are a , b , c. So order by 'a' will work. It did in my test.

Yechiel Adar, Mehish Computer Services
adary_at_mehish.co.il

> -----Original Message-----
> From: Hamid Alavi [SMTP:hamid.alavi_at_quovadx.com]
> Sent: Thu, January 17, 2002 8:31 PM
> To: Multiple recipients of list ORACLE-L
> Subject: UNION
>
> Hi,
>
> I try to use union and order by first column of first select statment and
> also first column of second select statment but get error, Any Idea how to
> do this??
>
> SELECT A,B,C FROM TABLEABC
> UNION
> SELECT D,E,F FROM TABLEDEF
> ORDER BY A,D
>
>
>
>
> Hamid Alavi
> Office 818 737-0526
> Cell 818 402-1987
>
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