From: | tgl(at)postgresql(dot)org (Tom Lane) |
---|---|
To: | pgsql-committers(at)postgresql(dot)org |
Subject: | pgsql: Fix oversight in construction of sort/unique plans for |
Date: | 2010-05-25 17:44:42 |
Message-ID: | 20100525174442.0D1C67541D2@cvs.postgresql.org |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-committers |
Log Message:
-----------
Fix oversight in construction of sort/unique plans for UniquePaths.
If the original IN operator is cross-type, for example int8 = int4,
we need to use int4 < int4 to sort the inner data and int4 = int4
to unique-ify it. We got the first part of that right, but tried to
use the original IN operator for the equality checks. Per bug #5472
from Vlad Romascanu.
Backpatch to 8.4, where the bug was introduced by the patch that unified
SortClause and GroupClause. I was able to take out a whole lot of on-the-fly
calls of get_equality_op_for_ordering_op(), but failed to realize that
I needed to put one back in right here :-(
Modified Files:
--------------
pgsql/src/backend/optimizer/plan:
createplan.c (r1.274 -> r1.275)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/plan/createplan.c?r1=1.274&r2=1.275)
From | Date | Subject | |
---|---|---|---|
Next Message | Tom Lane | 2010-05-25 17:44:47 | pgsql: Fix oversight in construction of sort/unique plans for |
Previous Message | Michael Meskes | 2010-05-25 17:28:56 | Re: pgsql: Added a configure test for "long long" datatypes. |