Tom Lane bdfbfde1b1 IN clauses appearing at top level of WHERE can now be handled as joins. ... There are two implementation techniques: the executor understands a new JOIN_IN jointype, which emits at most one matching row per left-hand row, or the result of the IN's sub-select can be fed through a DISTINCT filter and then joined as an ordinary relation. Along the way, some minor code cleanup in the optimizer; notably, break out most of the jointree-rearrangement preprocessing in planner.c and put it in a new file prep/prepjointree.c.		2003-01-20 18:55:07 +00:00
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Makefile	Subselects in FROM clause, per ISO syntax: FROM (SELECT ...) [AS] alias.	2000-09-29 18:21:41 +00:00
rewriteDefine.c	Adjust API of expression_tree_mutator and query_tree_mutator to	2003-01-17 02:01:21 +00:00
rewriteHandler.c	Adjust API of expression_tree_mutator and query_tree_mutator to	2003-01-17 02:01:21 +00:00
rewriteManip.c	IN clauses appearing at top level of WHERE can now be handled as joins.	2003-01-20 18:55:07 +00:00
rewriteRemove.c	pgindent run.	2002-09-04 20:31:48 +00:00
rewriteSupport.c	Restructure system-catalog index updating logic. Instead of having	2002-08-05 03:29:17 +00:00