postgresql

mirror of https://github.com/postgres/postgres.git synced 2026-04-12 20:46:42 -04:00

History

Tomas Vondra 491182e529 Build inherited extended stats on partitioned tables Commit `859b3003de` disabled building of extended stats for inheritance trees, to prevent updating the same catalog row twice. While that resolved the issue, it also means there are no extended stats for declaratively partitioned tables, because there are no data in the non-leaf relations. That also means declaratively partitioned tables were not affected by the issue `859b3003de` addressed, which means this is a regression affecting queries that calculate estimates for the whole inheritance tree as a whole (which includes e.g. GROUP BY queries). But because partitioned tables are empty, we can invert the condition and build statistics only for the case with inheritance, without losing anything. And we can consider them when calculating estimates. It may be necessary to run ANALYZE on partitioned tables, to collect proper statistics. For declarative partitioning there should no prior statistics, and it might take time before autoanalyze is triggered. For tables partitioned by inheritance the statistics may include data from child relations (if built `859b3003de`), contradicting the current code. Report and patch by Justin Pryzby, minor fixes and cleanup by me. Backpatch all the way back to PostgreSQL 10, where extended statistics were introduced (same as `859b3003de`). Author: Justin Pryzby Reported-by: Justin Pryzby Backpatch-through: 10 Discussion: https://postgr.es/m/20210923212624.GI831%40telsasoft.com		2022-01-15 18:32:20 +01:00
..
authentication	Make new authentication test case more robust.	2020-09-04 21:01:59 -04:00
examples	Client-side fixes for delayed NOTIFY receipt.	2018-10-19 22:22:57 -04:00
isolation	isolationtester: append session name to application_name.	2021-12-13 12:02:53 -08:00
kerberos	Fix potential rare failure in the kerberos TAP tests	2021-04-07 19:59:41 +09:00
ldap	Adapt src/test/ldap/t/001_auth.pl to work with openldap 2.5.	2021-10-19 11:15:45 -07:00
locale	Add a temp-install prerequisite to "check"-like targets not having one.	2017-11-05 18:51:08 -08:00
mb	Fix MB regression tests for WAL-logging of hash indexes.	2017-03-15 07:25:36 -04:00
modules	Avoid using ambiguous word "non-negative" in error messages.	2021-07-28 01:24:51 +09:00
perl	Fix CREATE INDEX CONCURRENTLY for the newest prepared transactions.	2021-10-23 18:36:43 -07:00
recovery	Fix instability in 026_overwrite_contrecord.pl test.	2021-11-09 18:40:19 -05:00
regress	Build inherited extended stats on partitioned tables	2022-01-15 18:32:20 +01:00
ssl	Allow SSL TAP tests to run on Windows	2019-09-29 17:50:44 -04:00
subscription	Invalidate relcache when changing REPLICA IDENTITY index.	2021-11-16 09:25:04 +05:30
thread	Update copyright for 2018	2018-01-02 23:30:12 -05:00
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