Re: UNION ALL - Var attno

Its not an OpExpr . It is a VAR , got it from "reltargetlist" in base relation ( RelOptInfo) . Can you shed some light on where the conversion from 141 to "original" attribute number takes place ??

On Fri, Apr 29, 2016 at 10:03 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:

sri harsha <sriharsha9992@gmail.com> writes:
>    Assume the following query ,
> (SELECT a * 1 , b FROM TABLE_1) UNION ALL (SELECT a *1 , b FROM TABLE_2);

> In this query , attribute number of the VARs are 141 and 2 respectively !!

I doubt it.

Maybe you're looking at something that's not a Var, possibly an OpExpr,
but assuming it's a Var?  The fact that 141 is the pg_proc OID of int4mul
lends considerable weight to this suspicion ...

                        regards, tom lane