Message-ID: <3A807B31.DC58C68A@10happythings.com>
Date: Tue, 06 Feb 2001 16:31:13 -0600
From: Greg Speegle <Greg@10happythings.com>
MIME-Version: 1.0
To: Peter T Mount <peter@retep.org.uk>
CC: pgsql-jdbc@postgresql.org
Subject: Re: [INTERFACES] Q on JDBC's resultset
References: <Pine.GSO.4.21.0102012132230.9884-100000@ural2>
	<981454871.3a7fd017dc11f@webmail.retep.org.uk>
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Peter T Mount wrote:

> 7.1 has the beginings of an UpdateableResultSet. When I can work out how to
> solve a few fundamental problems it shouldn't take long.
>
> Here's a few questions for people to see if they can figure it out:
>
> * How to detect what table a column belongs so. Required if the query was a
> join of 2 or more tables.

As I understand the JDBC spec, you are not supposed to be able to update
through a ResultSet unless several criteria are met by the query, including that the

query is over exactly one table (to avoid problems like these). I don't recall if
the other cases are also prohibited, but that would make the problem easier.

> * How to detect if the query was on a view. Do we support updateable view's?
> (not tried it myself).
>
> * How to detect if a column was a computed value (ie count(*) or col1+col2 etc).

Greg Speegle
Baylor University