| From: | Ashutosh Bapat <ashutosh(dot)bapat(at)enterprisedb(dot)com> |
|---|---|
| To: | Ernst-Georg Schmid <ernst-georg(dot)schmid(at)bayer(dot)com> |
| Cc: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Get the name of the target Relation from Query struct? SOLVED! |
| Date: | 2018-04-06 13:40:13 |
| Message-ID: | CAFjFpRenvB8i6NfiC8M6VXOy74rD528n-iAvCUUH1t-kGMbU1w@mail.gmail.com |
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On Fri, Apr 6, 2018 at 3:42 PM, Ernst-Georg Schmid
<ernst-georg(dot)schmid(at)bayer(dot)com> wrote:
> Hello David,
>
> actually Query->resultRelation is one based and Query->rtable is zero based.
>
> So the correct call to list_nth is: list_nth(Query->rtable, Query->resultRelation - 1)
As I suggested in the other mail, please use rt_fetch() or
planner_rt_fetch() that's future-proof in case we change relids to be
something-other-than-one based (an unlikely event, but who knows).
--
Best Wishes,
Ashutosh Bapat
EnterpriseDB Corporation
The Postgres Database Company
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