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>there is still an unpatched reference to pg_description in >getColumns(), in both jdbc1 and jdbc2. This was introduced by Jeroen's patch (see http://fts.postgresql.org/db/mw/msg.html?mid=1032468). Attached is a patch that returns getColumns() to using "select obj_description()" instead of direct access to pg_description, as per the request by Tom. I've incorporated Jeroen's fix to left outer join with pg_attrdef instead of inner join, so getColumns() also returns columns without a default value. I have, however, not included Jeroen's attempt to combine multiple queries into one huge multi-join query for better performance, because: 1) I don't know how to do that using obj_description() instead of direct access to pg_description 2) I don't think a performance improvement (if any) in this method is very important Because of the outer join, getColumns() will only work with a backend >= 7.1. Since the conditional coding for 7.1/7.2 and jdbc1/jdbc2 is already giving me headaches I didn't pursue a pre-7.1 solution. Regards, Ren? Pijlman <rene@lab.applinet.nl> |
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PostgreSQL Data Base Management System (formerly known as Postgres, then as Postgres95). This directory contains the development version of 7.2 of the PostgreSQL database server. The server is not 100% ANSI SQL compliant, but it gets closer with every release. After you unzip and untar the distribution file, look at file INSTALL for the installation notes and file HISTORY for the changes. The latest version of this software may be obtained at ftp://ftp.postgresql.org/pub/. For more information look at our WWW home page located at http://www.postgreSQL.org/. PostgreSQL is not public domain software. It is copyrighted by the University of California but may be used according to the licensing terms of the the copyright below: ------------------------------------------------------------------------ POSTGRES95 Data Base Management System (formerly known as Postgres, then as Postgres95). Copyright (c) 1994-7 Regents of the University of California Permission to use, copy, modify, and distribute this software and its documentation for any purpose, without fee, and without a written agreement is hereby granted, provided that the above copyright notice and this paragraph and the following two paragraphs appear in all copies. IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.