From: Tom Lane <tgl@sss.pgh.pa.us>
To: Islam Hegazy <islheg@gmail.com>
Cc: pgsql-interfaces@postgresql.org
Subject: Re: modifying in the libpg files
Date: Sat, 21 Apr 2007 22:55:34 -0400
Message-ID: <16677.1177210534@sss.pgh.pa.us> (raw)
In-Reply-To: <002d01c78483$756209d0$0d0e9f88@pc.cpsc.ucalgary.ca>
References: <002d01c78483$756209d0$0d0e9f88@pc.cpsc.ucalgary.ca>
"Islam Hegazy" <islheg@gmail.com> writes:
> ../../src/interfaces/libpq/libpq.so: undefined reference to =
> `PrintQueryResults'
libpq.so is a shared library --- you can't have it calling functions
that are not in either itself or a shared library it depends on.
You'd have to move PrintQueryTuples bodily into libpq.so to make this
work. There are various reasons why that's not a great idea, the
main one being that libpq has no idea where psql is intending to
send the output.
IMHO a reasonable solution would involve extending libpq's published API
to allow returning partial query results. This seems like it could be
made to fit into the PQsendQuery/PQgetResult paradigm, but nobody's
actually done that yet.
regards, tom lane
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To: pgsql-interfaces@postgresql.org
Cc: tgl@sss.pgh.pa.us, islheg@gmail.com
Subject: Re: modifying in the libpg files
In-Reply-To: <16677.1177210534@sss.pgh.pa.us>
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