From: Richard Jones <rich@annexia.org>
To: pgsql-interfaces@postgresql.org
Subject: Parse a statement, get parameter types and return types
Date: Mon, 18 Jul 2005 14:03:37 +0100
Message-ID: <20050718130337.GA23201@furbychan.cocan.org> (raw)
Given a statement, eg:
select foo from bar where col = $1
I'd really like to get the types deduced by the PostgreSQL parser for
the input variables ($1, etc.) and the result column(s). eg. it might
be $1 :: int4 and foo :: text, or whatever.
It seems from reading about PQprepare that getting the input types
isn't yet possible, but might be in future:
http://www.postgresql.org/docs/current/static/libpq-exec.html#AEN23157
I have no idea where to start getting the result types.
Is this possible in some way? Is the data perhaps hidden in one of
the pg_* system tables?
Note that I don't want to actually execute the statement, just parse
it.
Rich.
--
Richard Jones, CTO Merjis Ltd.
Merjis - web marketing and technology - http://merjis.com
Team Notepad - intranets and extranets for business - http://team-notepad.com
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To: pgsql-interfaces@postgresql.org
Cc: rich@annexia.org
Subject: Re: Parse a statement, get parameter types and return types
In-Reply-To: <20050718130337.GA23201@furbychan.cocan.org>
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