hi,
try:
select *
from (select Y.col1 AS X from ....) Z, T
where T.col2 = Z.X
'Z' is a table alias in your case, not column alias...
kuba
On Sat, 9 Nov 2002, Tourtounis Sotiris wrote:
>
> Performing an SQL query of the below general form to a table T
>
> Table T :
>
> col1 | col2 | col3
> ------------------
> text | text | text
>
> and the query is ...
>
> select *
> from (select Y.col1 from ....) Z, T
> where T.col2 = Z
>
> I think this query should work - however it throws me an error to the
> where clause, where it says that it doesn't find Z (ERROR: Attribute 'z'
> not found) - can anyone notice any mistake or overlap that i have made - i
> would really appreciate any kind of help or advice - thank you a priori
> !!!
>
>
>
> SWTHRHS TOYRTOYNHS
> (tourtoun@csd.uch.gr)
>
>
>
>
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