postgresql

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History

Tom Lane 529ebb20aa Generate EquivalenceClass members for partitionwise child join rels. Commit `d25ea0127` got rid of what I thought were entirely unnecessary derived child expressions in EquivalenceClasses for EC members that mention multiple baserels. But it turns out that some of the child expressions that code created are necessary for partitionwise joins, else we fail to find matching pathkeys for Sort nodes. (This happens only for certain shapes of the resulting plan; it may be that partitionwise aggregation is also necessary to show the failure, though I'm not sure of that.) Reverting that commit entirely would be quite painful performance-wise for large partition sets. So instead, add code that explicitly generates child expressions that match only partitionwise child join rels we have actually generated. Per report from Justin Pryzby. (Amit Langote noticed the problem earlier, though it's not clear if he recognized then that it could result in a planner error, not merely failure to exploit partitionwise join, in the code as-committed.) Back-patch to v12 where commit `d25ea0127` came in. Amit Langote, with lots of kibitzing from me Discussion: https://postgr.es/m/CA+HiwqG2WVUGmLJqtR0tPFhniO=H=9qQ+Z3L_ZC+Y3-EVQHFGg@mail.gmail.com Discussion: https://postgr.es/m/20191011143703.GN10470@telsasoft.com		2019-11-05 11:42:24 -05:00
..
authentication	Fix use of term "verifier"	2019-10-12 21:41:59 +02:00
examples	Fix example program in docs too (??)	2019-09-18 16:54:11 -03:00
isolation	Make the order of the header file includes consistent in non-backend modules.	2019-10-25 07:41:52 +05:30
kerberos	Save Kerberos and LDAP daemon logs where the buildfarm can find them.	2019-08-06 17:08:07 -04:00
ldap	Be more careful about port selection in src/test/ldap/.	2019-09-09 14:21:40 -04:00
locale	Make sort-test.py Python 3 compatible	2019-01-04 11:23:24 +01:00
mb	Fix MB regression tests for WAL-logging of hash indexes.	2017-03-15 07:25:36 -04:00
modules	Refactor code building relation options	2019-11-05 09:17:05 +09:00
perl	Suppress another CR in program output	2019-09-30 15:51:14 -04:00
recovery	Remove temporary WAL and history files at the end of archive recovery	2019-10-02 15:53:07 +09:00
regress	Generate EquivalenceClass members for partitionwise child join rels.	2019-11-05 11:42:24 -05:00
ssl	Fix SSL test for libpq connection parameter channel_binding	2019-09-30 13:11:31 +09:00
subscription	Initial pgperltidy run for v12.	2019-05-22 13:36:19 -04:00
thread	Fix inconsistencies and typos in the tree, take 11	2019-08-19 16:21:39 +09:00
Makefile	Revert "Allow on-line enabling and disabling of data checksums"	2018-04-09 19:03:42 +02:00
README	Add TAP tests for password-based authentication methods.	2017-03-17 11:34:16 +02:00

README

PostgreSQL tests
================

This directory contains a variety of test infrastructure as well as some of the
tests in PostgreSQL. Not all tests are here -- in particular, there are more in
individual contrib/ modules and in src/bin.

Not all these tests get run by "make check". Check src/test/Makefile to see
which tests get run automatically.

authentication/
  Tests for authentication

examples/
  Demonstration programs for libpq that double as regression tests via
  "make check"

isolation/
  Tests for concurrent behavior at the SQL level

locale/
  Sanity checks for locale data, encodings, etc

mb/
  Tests for multibyte encoding (UTF-8) support

modules/
  Extensions used only or mainly for test purposes, generally not suitable
  for installing in production databases

perl/
  Infrastructure for Perl-based TAP tests

recovery/
  Test suite for recovery and replication

regress/
  PostgreSQL's main regression test suite, pg_regress

ssl/
  Tests to exercise and verify SSL certificate handling

subscription/
  Tests for logical replication

thread/
  A thread-safety-testing utility used by configure