postgresql/src/test
Tom Lane cabe0f298e Fix "ANALYZE t, t" inside a transaction block.
This failed with either "tuple already updated by self" or "duplicate
key value violates unique constraint", depending on whether the table
had previously been analyzed or not.  The reason is that ANALYZE tried
to insert or update the same pg_statistic rows twice, and there was no
CommandCounterIncrement between.  So add one.  The same case works fine
outside a transaction block, because then there's a whole transaction
boundary between, as a consequence of the way VACUUM works.

This issue has been latent all along, but the problem was unreachable
before commit 11d8d72c2 added the ability to specify multiple tables
in ANALYZE.  We could, perhaps, alternatively fix it by adding code to
de-duplicate the list of VacuumRelations --- but that would add a
lot of overhead to work around dumb commands, so it's not attractive.

Per bug #15946 from Yaroslav Schekin.  Back-patch to v11.

(Note: in v11 I also back-patched the test added by commit 23224563d;
otherwise the problem doesn't manifest in the test I added, because
"vactst" is empty when the tests for multiple ANALYZE targets are
reached.  That seems like not a very good thing anyway, so I did this
rather than rethinking the choice of test case.)

Discussion: https://postgr.es/m/15946-5c7570a2884a26cf@postgresql.org
2019-08-10 11:30:11 -04:00
..
authentication Update copyright for 2019 2019-01-02 12:44:25 -05:00
examples Update copyright for 2019 2019-01-02 12:44:25 -05:00
isolation Fix predicate-locking of HOT updated rows. 2019-08-07 12:40:49 +03:00
kerberos Save Kerberos and LDAP daemon logs where the buildfarm can find them. 2019-08-06 17:08:07 -04:00
ldap Fix certificate subjects in ldap test 2019-08-08 15:00:46 -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 Move rolenames test out of the core regression tests. 2019-06-30 12:51:12 -04:00
perl Avoid picking already-bound TCP ports in kerberos and ldap test suites. 2019-08-04 13:07:12 -04:00
recovery Fix failure with pgperlcritic from the TAP test of synchronous replication 2019-07-25 07:55:23 +09:00
regress Fix "ANALYZE t, t" inside a transaction block. 2019-08-10 11:30:11 -04:00
ssl Initial pgperltidy run for v12. 2019-05-22 13:36:19 -04:00
subscription Initial pgperltidy run for v12. 2019-05-22 13:36:19 -04:00
thread Ensure link commands list *.o files before LDFLAGS. 2019-01-02 13:57:54 -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

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