Tom Lane 8fb61e0b54 Fix oversight in flattening of subqueries with empty FROM. ... I missed a restriction that commit f4abd0241d should have enforced: we can't pull up an empty-FROM subquery if it's under an outer join, because then we'd need to wrap its output columns in PlaceHolderVars. As the code currently stands, the PHVs end up with empty relid sets, which doesn't work (and is correctly caught by an Assert). It's possible that this could be fixed by assigning the PHVs the relid sets of the parent FromExpr/JoinExpr, but getting that to work is more complication than I care to add right now; indeed it's likely that we'll never bother, since pulling up empty-FROM subqueries is a rather marginal optimization anyway. Per report from Andreas Seltenreich. Back-patch to 9.5 where the faulty code was added.		2015-07-26 17:44:27 -04:00
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examples	Fix up .gitignore and cleanup actions in some src/test/ subdirectories.	2015-04-24 17:13:06 -04:00
isolation	Fix portability issue in isolationtester grammar.	2015-05-27 19:14:51 -04:00
locale	Fix up .gitignore and cleanup actions in some src/test/ subdirectories.	2015-04-24 17:13:06 -04:00
mb	Fix outdated src/test/mb/ tests, and add a GB18030 test.	2015-05-15 13:47:42 -04:00
modules	Redirect install output of make check into a log file	2015-07-23 09:53:46 -04:00
perl	pgindent run for 9.5	2015-05-23 21:35:49 -04:00
regress	Fix oversight in flattening of subqueries with empty FROM.	2015-07-26 17:44:27 -04:00
ssl	Change TAP test framework to not rely on having a chmod executable.	2015-06-19 10:52:00 -04:00
thread	Fix up .gitignore and cleanup actions in some src/test/ subdirectories.	2015-04-24 17:13:06 -04:00
Makefile	Fix up .gitignore and cleanup actions in some src/test/ subdirectories.	2015-04-24 17:13:06 -04:00