Laurent ROCHE wrote:
>
> So I wrote:
> SELECT 'TRUNCATE TABLE '
> UNION
...
> ORDER BY relname
>
> And this fails with the following message:
> ERROR: column "relname" does not exist
> But I don't understand why this does not work: the 2 SELECTs produce a single char column so from what I understand
thatshould work ! ? !
> If some body can explain I will be grateful.
The "ORDER BY" is attached to the "UNION" not the second subquery.
Catches everyone out from time to time.
--
Richard Huxton
Archonet Ltd