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Vadim B. Mikheev 51298bcfda Reset evaluation plan tuple table next free slot counter to 0 
after ExecEndNode. It must be done! Or we'll be out of free
tuple slots very soon, though slots are freed by ExecEndNode
and ready for reusing.

We didn't see this problem before because of

int         nSlots = ExecCountSlotsNode(plan);
TupleTable  tupleTable = ExecCreateTupleTable(nSlots + 10);
    /* why add ten? - jolly */

code in InitPlan - i.e. extra 10 slots. Simple select uses
3 slots and so it was possible to re-use evaluation plan
3 additional times and didn't get

elog(NOTICE, "Plan requires more slots than are available");
elog(ERROR, "send mail to your local executor guru to fix this");

Changes are obvious and shouldn't be problems with them.
Though, I added Assert(epqstate->es_tupleTable->next == 0)
before EvalPlanQual():ExecInitNode and we'll notice if
something is still wrong. Is it better to change Assert
to elog(ERROR) ?
1999-06-09 12:23:42 +00:00
contrib Update from Massimo 1999-06-05 20:07:54 +00:00
doc MVCC updation. 1999-06-08 20:01:01 +00:00
src Reset evaluation plan tuple table next free slot counter to 0 1999-06-09 12:23:42 +00:00
COPYRIGHT
HISTORY Release notes from sgml for v6.5 release. 1999-06-04 06:23:00 +00:00
INSTALL Add a mention of doc changes in the release notes. 1999-06-04 06:23:27 +00:00
README
register.txt Add mention of new pg_dump feature. 1999-06-08 16:42:10 +00:00

README 

PostgreSQL Data Base Management System (formerly known as Postgres, then
as Postgres95).
  
This directory contains the development version of 6.5 of the PostgreSQL
database server.  The server is not 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.