From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | "Daniel Grace" <thisgenericname(at)gmail(dot)com> |
Cc: | pgsql-bugs(at)postgresql(dot)org |
Subject: | Re: BUG #5985: CLUSTER ... USING can fail with ERROR: index xxx does not belong to table yyy |
Date: | 2011-04-20 21:47:30 |
Message-ID: | 19837.1303336050@sss.pgh.pa.us |
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Lists: | pgsql-bugs |
I wrote:
> "Daniel Grace" <thisgenericname(at)gmail(dot)com> writes:
>> One such file (contents listed below, admittably not 100% useful without a
>> full schema and data) makes a bunch of alterations to a table but fails when
>> it reaches CLUSTER:
>> psql:D:/SVN/wings/wings/branches/devpg/db/lib/course.sql:38: ERROR: index
>> 178138 does not belong to table 176177
>> However, this failure only occurs if the file is wrapped in a transaction
>> block. Outside of a transaction block, it works fine.
> I wonder if the issue is that the planner thinks the index isn't usable
> yet because of HOT-chain issues.
On closer inspection this seems to be just insufficient consideration of
corner cases. We can handle it with a pretty trivial fix in
plan_cluster_use_sort. Thanks for the bug report!
regards, tom lane
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