postgresql

mirror of https://git.postgresql.org/git/postgresql.git synced 2024-08-25 07:57:19 +02:00

History

Tom Lane 4452000f31 Fix constant-folding of ROW(...) IS [NOT] NULL with composite fields. The SQL standard appears to specify that IS [NOT] NULL's tests of field nullness are non-recursive, ie, we shouldn't consider that a composite field with value ROW(NULL,NULL) is null for this purpose. ExecEvalNullTest got this right, but eval_const_expressions did not, leading to weird inconsistencies depending on whether the expression was such that the planner could apply constant folding. Also, adjust the docs to mention that IS [NOT] DISTINCT FROM NULL can be used as a substitute test if a simple null check is wanted for a rowtype argument. That motivated reordering things so that IS [NOT] DISTINCT FROM is described before IS [NOT] NULL. In HEAD, I went a bit further and added a table showing all the comparison-related predicates. Per bug #14235. Back-patch to all supported branches, since it's certainly undesirable that constant-folding should change the semantics. Report and patch by Andrew Gierth; assorted wordsmithing and revised regression test cases by me. Report: <20160708024746.1410.57282@wrigleys.postgresql.org>		2016-07-26 15:25:02 -04:00
..
examples	Update copyright for 2016	2016-01-02 13:33:40 -05:00
isolation	Establish conventions about global object names used in regression tests.	2016-07-17 18:42:43 -04:00
locale	Fix omission of -X (--no-psqlrc) in some psql invocations.	2015-12-28 11:46:43 -05:00
mb	Revert "Fix broken multibyte regression tests."	2016-01-26 08:29:15 +09:00
modules	Message style improvements	2016-07-25 22:07:44 -04:00
perl	Fix improper example of using psql() function in TAP tests documentation.	2016-07-26 21:17:38 +09:00
recovery	Finish pgindent run for 9.6: Perl files.	2016-06-12 04:19:56 -04:00
regress	Fix constant-folding of ROW(...) IS [NOT] NULL with composite fields.	2016-07-26 15:25:02 -04:00
ssl	Clean the last few TAP suite tmp_check directories.	2016-02-24 23:41:54 -05:00
thread	Update copyright for 2016	2016-01-02 13:33:40 -05:00
Makefile	Add a test framework for recovery	2016-02-26 16:13:30 -03:00
README	Minor tweaks for new src/test/recovery	2016-02-29 18:16:59 -03:00

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.

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

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