From: | Greg Speegle <Greg(at)10happythings(dot)com> |
---|---|
To: | Peter T Mount <peter(at)retep(dot)org(dot)uk> |
Cc: | pgsql-jdbc(at)postgresql(dot)org |
Subject: | Re: [INTERFACES] Q on JDBC's resultset |
Date: | 2001-02-06 22:31:13 |
Message-ID: | 3A807B31.DC58C68A@10happythings.com |
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Lists: | pgsql-interfaces pgsql-jdbc |
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
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