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Tom Lane 18d85e9b8a Further improve stability fix for partition_aggregate test. 
Commit 7cb0a423f overlooked that the multi-level partition test table
pagg_tab_ml still had an exactly even row split at its upper level of
partitioning, so that some of the sub-aggregation plan steps still had
exactly equal costs, leading to plan instability.  Tweak the partition
boundaries some more to make the row distribution unequal at both
levels.  This leads to more changes in the "expected" plan order than
the previous round, but it seems fine.  (Actually, I'm surprised that
this didn't affect even more plans in this test: looking at the
underlying costs shows that some of the parallel plan groups are
*not* getting sorted by cost.  Bug?)

Per buildfarm member lousyjack,
https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=lousyjack&dt=2020-04-04%2021%3A03%3A04

Discussion: https://postgr.es/m/24467.1585838693@sss.pgh.pa.us
2020-04-05 00:53:28 -04:00
config Enable Unix-domain sockets support on Windows 2020-03-28 15:01:01 +01:00
contrib Allow pg_stat_statements to track WAL usage statistics. 2020-04-05 07:34:04 +05:30
doc Allow pg_stat_statements to track WAL usage statistics. 2020-04-05 07:34:04 +05:30
src Further improve stability fix for partition_aggregate test. 2020-04-05 00:53:28 -04:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.editorconfig Add .editorconfig 2019-12-18 09:13:13 +01:00
.gitattributes gitattributes: Add new file 2019-11-12 08:13:55 +01:00
.gitignore
aclocal.m4 Fix configure's AC_CHECK_DECLS tests to work correctly with clang. 2018-11-19 12:01:47 -05:00
configure Enable Unix-domain sockets support on Windows 2020-03-28 15:01:01 +01:00
configure.in Define EXEC_BACKEND in pg_config_manual.h 2020-03-25 14:31:14 +01:00
COPYRIGHT Update copyrights for 2020 2020-01-01 12:21:45 -05:00
GNUmakefile.in Add support for automatically updating Unicode derived files 2020-01-09 10:08:14 +01:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Don't unset MAKEFLAGS in non-GNU Makefile. 2019-06-25 09:36:21 +12:00
README Canonicalize some URLs 2020-02-10 20:47:50 +01:00
README.git Canonicalize some URLs 2020-02-10 20:47:50 +01:00

README 

PostgreSQL Database Management System
=====================================

This directory contains the source code distribution of the PostgreSQL
database management system.

PostgreSQL is an advanced object-relational database management system
that supports an extended subset of the SQL standard, including
transactions, foreign keys, subqueries, triggers, user-defined types
and functions.  This distribution also contains C language bindings.

PostgreSQL has many language interfaces, many of which are listed here:

	https://www.postgresql.org/download/

See the file INSTALL for instructions on how to build and install
PostgreSQL.  That file also lists supported operating systems and
hardware platforms and contains information regarding any other
software packages that are required to build or run the PostgreSQL
system.  Copyright and license information can be found in the
file COPYRIGHT.  A comprehensive documentation set is included in this
distribution; it can be read as described in the installation
instructions.

The latest version of this software may be obtained at
https://www.postgresql.org/download/.  For more information look at our
web site located at https://www.postgresql.org/.