Re: any way for a transaction to "see" inserts done earlier in the transaction?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Susan Cassidy <susan(dot)cassidy(at)decisionsciencescorp(dot)com>
Cc: Steven Schlansker <steven(at)likeness(dot)com>, "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org>
Subject: Re: any way for a transaction to "see" inserts done earlier in the transaction?
Date: 2014-04-17 00:17:01
Message-ID: 27525.1397693821@sss.pgh.pa.us
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Susan Cassidy <susan(dot)cassidy(at)decisionsciencescorp(dot)com> writes:
> It is a fairly large and complex Perl program, so no, not really.
> I do an insert via a function, which returns the new id, then later I try
> to SELECT on that id, and it doesn't find it.

> Could it be because the insert is done inside a function?

Is the SELECT also inside a database function, and if so is that function
marked stable or immutable? That might explain it --- non-volatile
functions are intentionally designed not to notice updates that happen
after they start.

regards, tom lane

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