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Re: TupleDescs and refcounts and such, again

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Simon Riggs" <simon(at)2ndquadrant(dot)com>
Cc: pgsql-hackers(at)postgreSQL(dot)org
Subject: Re: TupleDescs and refcounts and such, again
Date: 2006-12-27 23:05:07
Message-ID: 25290.1167260707@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-hackers
"Simon Riggs" <simon(at)2ndquadrant(dot)com> writes:
> Is it possible to allocate the subquery in a child context of the main
> query, so that it is technically a different context, yet can be freed
> simultaneously?

That's exactly what the code *was* doing, but the problem is that we'd
free the child context during ExecEndSubqueryScan, at which point the
tupdesc is still needed.

			regards, tom lane

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