Re: [GENERAL] Retrieving query results - Mailing list pgsql-general

From Tom Lane
Subject Re: [GENERAL] Retrieving query results
Date
Msg-id 17616.1503616727@sss.pgh.pa.us
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In response to Re: [GENERAL] Retrieving query results  (Igor Korot <ikorot01@gmail.com>)
Responses Re: [GENERAL] Retrieving query results  (Igor Korot <ikorot01@gmail.com>)
List pgsql-general
Igor Korot <ikorot01@gmail.com> writes:
> So there is no way to retrieve an arbitrary number of rows from the query?
> That sucks...

The restriction is on the number of rows in one PGresult, not the total
size of the query result.  You could use single-row mode, or use a cursor
and fetch some reasonable number of rows at a time.  If you try to inhale
all of a many-gigarow result at once, you're going to have OOM problems
anyway, even if you had the patience to wait for it.  So I don't think the
existence of a limit is a problem.  Failure to check it *is* a problem,
certainly.

            regards, tom lane


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