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Tom Lane b74c543685 Improve usage of effective_cache_size parameter by assuming that all the ... tables in the query compete for cache space, not just the one we are currently costing an indexscan for. This seems more realistic, and it definitely will help in examples recently exhibited by Stefan Kaltenbrunner. To get the total size of all the tables involved, we must tweak the handling of 'append relations' a bit --- formerly we looked up information about the child tables on-the-fly during set_append_rel_pathlist, but it needs to be done before we start doing any cost estimation, so push it into the add_base_rels_to_query scan.		20 years ago
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Makefile	$Header: -> $PostgreSQL Changes ...	22 years ago
allpaths.c	Improve usage of effective_cache_size parameter by assuming that all the	20 years ago
clausesel.c	Remove 576 references of include files that were not needed.	20 years ago
costsize.c	Improve usage of effective_cache_size parameter by assuming that all the	20 years ago
indxpath.c	In the recent changes to make the planner account better for cache	20 years ago
joinpath.c	Fix an oversight in mergejoin planning: the planner would reject a	20 years ago
joinrels.c	Update copyright for 2006. Update scripts.	20 years ago
orindxpath.c	Remove 576 references of include files that were not needed.	20 years ago
pathkeys.c	Teach convert_subquery_pathkeys() to handle the case where the	20 years ago
tidpath.c	Update copyright for 2006. Update scripts.	20 years ago