Tom Lane 056467ec6b Teach planner how to propagate pathkeys from sub-SELECTs in FROM up to ... the outer query. (The implementation is a bit klugy, but it would take nontrivial restructuring to make it nicer, which this is probably not worth.) This avoids unnecessary sort steps in examples like SELECT foo,count(*) FROM (SELECT ... ORDER BY foo,bar) sub GROUP BY foo which means there is now a reasonable technique for controlling the order of inputs to custom aggregates, even in the grouping case.		2003-02-15 20:12:41 +00:00
..
clauses.h	Minor code cleanup: remove no-longer-useful pull_subplans() function,	2003-02-04 00:50:01 +00:00
cost.h	Extend join-selectivity API (oprjoin interface) so that join type is	2003-01-28 22:13:41 +00:00
geqo.h	Fix GEQO to work again in CVS tip, by being more careful about memory	2002-12-16 21:30:30 +00:00
geqo_copy.h	Update copyright to 2002.	2002-06-20 20:29:54 +00:00
geqo_gene.h	Update copyright to 2002.	2002-06-20 20:29:54 +00:00
geqo_misc.h	First phase of implementing hash-based grouping/aggregation. An AGG plan	2002-11-06 00:00:45 +00:00
geqo_mutation.h	Update copyright to 2002.	2002-06-20 20:29:54 +00:00
geqo_pool.h	Update copyright to 2002.	2002-06-20 20:29:54 +00:00
geqo_random.h	Update copyright to 2002.	2002-06-20 20:29:54 +00:00
geqo_recombination.h	Update copyright to 2002.	2002-06-20 20:29:54 +00:00
geqo_selection.h	Update copyright to 2002.	2002-06-20 20:29:54 +00:00
joininfo.h	Modify planner's implied-equality-deduction code so that when a set	2003-01-24 03:58:44 +00:00
pathnode.h	Teach planner how to propagate pathkeys from sub-SELECTs in FROM up to	2003-02-15 20:12:41 +00:00
paths.h	Teach planner how to propagate pathkeys from sub-SELECTs in FROM up to	2003-02-15 20:12:41 +00:00
plancat.h	Tweak planner and executor to avoid doing ExecProject() in table scan	2003-02-03 15:07:08 +00:00
planmain.h	Modify planner's implied-equality-deduction code so that when a set	2003-01-24 03:58:44 +00:00
planner.h	IN clauses appearing at top level of WHERE can now be handled as joins.	2003-01-20 18:55:07 +00:00
prep.h	Detect case where an outer join can be reduced to a plain inner join	2003-02-09 23:57:19 +00:00
restrictinfo.h	Restructure planning of nestloop inner indexscans so that the set of usable	2002-11-24 21:52:15 +00:00
subselect.h	Make further use of new bitmapset code: executor's chgParam, extParam,	2003-02-09 00:30:41 +00:00
tlist.h	Teach planner how to propagate pathkeys from sub-SELECTs in FROM up to	2003-02-15 20:12:41 +00:00
var.h	Replace planner's representation of relation sets, per pghackers discussion.	2003-02-08 20:20:55 +00:00