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Re: bug in the jdbc driver for postgress 7.0 (

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Travis Bauer <trbauer(at)indiana(dot)edu>
Cc: pgsql-bugs(at)postgresql(dot)org
Subject: Re: bug in the jdbc driver for postgress 7.0 (
Date: 2000-05-25 03:34:04
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-bugs
This fix will appear in 7.01, and is in tonight's snapshot.  Please let
us know if that does not fix it.

> I think I've found a bug in how the jdbc driver (JDBC2) numbers the rows
> in a result set.  According to Sun's documentation for the ResultSet
> interface, the rows in a result set should be numbered starting with
> 1.  However, the's first() routine set's current_row to
> 0. The odd thing is that beforeFirst() also sets current_row to 0, it
> just does not load this_row.  The bug manifests itself as such:
> given ResultSet rs containing two rows:
> rs.last();
> System.out.println("Last id is: "+rs.getRow());
> rs.first();
> System.out.println("First id is: "+rs.getRow());
> produces the output:
> Last id is: 1
> First id is: 0
> I think the easiest fix would be to change getRow() so that it returns
> current_row+1, and change beforeFirst so that it sets current_row to
> -1.  I'm not sure what other changes need to be made, but since the JDBC
> driver does not allow one to refer directly to row numbers, I can't think
> of any other changes offhand.
> Or am I all wet and this is not a bug?  Please respond to me directly, as
> I'm not a member of this list.
> ----------------------------------------------------------------
> Travis Bauer | CS Grad Student | IU |
> ----------------------------------------------------------------

  Bruce Momjian                        |
  pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026

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