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0927d2f46d
A simple UNION ALL gets flattened into an appendrel of subquery RTEs, but up until now it's been impossible for the appendrel to use the partial paths for the subqueries, so we can implement the appendrel as a Parallel Append but only one with non-partial paths as children. There are three separate obstacles to removing that limitation. First, when planning a subquery, propagate any partial paths to the final_rel so that they are potentially visible to outer query levels (but not if they have initPlans attached, because that wouldn't be safe). Second, after planning a subquery, propagate any partial paths for the final_rel to the subquery RTE in the outer query level in the same way we do for non-partial paths. Third, teach finalize_plan() to account for the possibility that the fake parameter we use for rescan signalling when the plan contains a Gather (Merge) node may be propagated from an outer query level. Patch by me, reviewed and tested by Amit Khandekar, Rajkumar Raghuwanshi, and Ashutosh Bapat. Test cases based on examples by Rajkumar Raghuwanshi. Discussion: http://postgr.es/m/CA+Tgmoa6L9A1nNCk3aTDVZLZ4KkHDn1+tm7mFyFvP+uQPS7bAg@mail.gmail.com |
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| .. | ||
| authentication | ||
| examples | ||
| isolation | ||
| kerberos | ||
| ldap | ||
| locale | ||
| mb | ||
| modules | ||
| perl | ||
| recovery | ||
| regress | ||
| ssl | ||
| subscription | ||
| thread | ||
| Makefile | ||
| 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