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Re: libpq: how to retrieve query result? - Mailing list pgsql-general

From Tom Lane
Subject Re: libpq: how to retrieve query result?
Date
Msg-id 21368.1295299498@sss.pgh.pa.us
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In response to libpq: how to retrieve query result?  (Вячеслав Блинников <slavmfm@gmail.com>)
List pgsql-general
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=?KOI8-R?B?99HexdPMwdcg4szJzs7Jy8/X?= <slavmfm@gmail.com> writes:
> I retrieve asynchronous queries results using PQgetResult() which returns
> NULL not in case of some error, but when results end - so there is no way to
> know if database responded successfully or there happened some error?
> For example, error can happen when column names are miswritten.

Huh?  You'll get back a PGresult with error status if the query failed.
NULL implies that you already collected the PGresult and there's nothing
more to do.

            regards, tom lane

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