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11c8669c0c
This lets us use parallel aggregate for a variety of useful cases that didn't work before, like sum(int8), sum(numeric), several versions of avg(), and various other functions. Add some regression tests, as well, testing the general sanity of these and future catalog entries. David Rowley, reviewed by Tomas Vondra, with a few further changes by me.
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