postgresql

mirror of https://github.com/postgres/postgres.git synced 2026-03-03 22:00:57 -05:00

History

David Rowley db632fbca3 Allow ordered partition scans in more cases `959d00e9d` added the ability to make use of an Append node instead of a MergeAppend when we wanted to perform a scan of a partitioned table and the required sort order was the same as the partitioned keys and the partitioned table was defined in such a way that earlier partitions were guaranteed to only contain lower-order values than later partitions. However, previously we didn't allow these ordered partition scans for LIST partitioned table when there were any partitions that allowed multiple Datums. This was a very cheap check to make and we could likely have done a little better by checking if there were interleaved partitions, but at the time we didn't have visibility about which partitions were pruned, so we still may have disallowed cases where all interleaved partitions were pruned. Since `475dbd0b7`, we now have knowledge of pruned partitions, we can do a much better job inside partitions_are_ordered(). Here we pass which partitions survived partition pruning into partitions_are_ordered() and, for LIST partitioning, have it check to see if any live partitions exist that are also in the new "interleaved_parts" field defined in PartitionBoundInfo. For RANGE partitioning we can relax the code which caused the partitions to be unordered if a DEFAULT partition existed. Since we now know which partitions were pruned, partitions_are_ordered() now returns true when the DEFAULT partition was pruned. Reviewed-by: Amit Langote, Zhihong Yu Discussion: https://postgr.es/m/CAApHDvrdoN_sXU52i=QDXe2k3WAo=EVry29r2+Tq2WYcn2xhEA@mail.gmail.com		2021-08-03 12:25:52 +12:00
..
authentication	Unify PostgresNode's new() and get_new_node() methods	2021-07-29 05:58:08 -04:00
examples	libpq: Remove deprecated connection parameters authtype and tty	2021-03-09 15:01:22 +01:00
isolation	Rename debug_invalidate_system_caches_always to debug_discard_caches.	2021-07-13 15:01:01 -04:00
kerberos	Remove the last vestiges of Exporter from PostgresNode	2021-07-29 05:58:08 -04:00
ldap	Remove the last vestiges of Exporter from PostgresNode	2021-07-29 05:58:08 -04:00
locale	Remove extraneous newlines added by perl copyright patch	2021-05-07 11:37:37 -04:00
mb	Fix MB regression tests for WAL-logging of hash indexes.	2017-03-15 07:25:36 -04:00
modules	Silence perl warning about uninitialized value	2021-08-01 13:03:15 -04:00
perl	Make TestLib::perl2host more consistent and robust	2021-07-29 12:15:03 -04:00
recovery	Close yet another race condition in replication slot test code	2021-07-29 17:09:06 -04:00
regress	Allow ordered partition scans in more cases	2021-08-03 12:25:52 +12:00
ssl	Remove unused directory from test/ssl .gitignore	2021-07-29 12:05:54 +02:00
subscription	Fix test failure in 021_twophase.pl.	2021-08-02 08:31:48 +05:30
Makefile	Revert per-index collation version tracking feature.	2021-05-07 21:10:11 +12:00
README	Remove the option to build thread_test.c outside configure.	2020-10-21 12:08:48 -04:00

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 (but see also below)

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

isolation/
  Tests for concurrent behavior at the SQL level

kerberos/
  Tests for Kerberos/GSSAPI authentication and encryption

ldap/
  Tests for LDAP-based authentication

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