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Rather than trying to pick table aliases that won't conflict with any possible user-defined matview column name, adjust the queries' syntax so that the aliases are only used in places where they can't be mistaken for column names. Mostly this consists of writing "alias.*" not just "alias", which adds clarity for humans as well as machines. We do have the issue that "SELECT alias.*" acts differently from "SELECT alias", but we can use the same hack ruleutils.c uses for whole-row variables in SELECT lists: write "alias.*::compositetype". We might as well revert to the original aliases after doing this; they're a bit easier to read. Like 75d66d10e, back-patch to all supported branches. Discussion: https://postgr.es/m/2488325.1628261320@sss.pgh.pa.us
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