Tom Lane 282d2a03dd HOT updates. When we update a tuple without changing any of its indexed ... columns, and the new version can be stored on the same heap page, we no longer generate extra index entries for the new version. Instead, index searches follow the HOT-chain links to ensure they find the correct tuple version. In addition, this patch introduces the ability to "prune" dead tuples on a per-page basis, without having to do a complete VACUUM pass to recover space. VACUUM is still needed to clean up dead index entries, however. Pavan Deolasee, with help from a bunch of other people.		2007-09-20 17:56:33 +00:00
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common	Clarify some error messages about duplicate things.	2007-06-03 22:16:03 +00:00
gin	HOT updates. When we update a tuple without changing any of its indexed	2007-09-20 17:56:33 +00:00
gist	HOT updates. When we update a tuple without changing any of its indexed	2007-09-20 17:56:33 +00:00
hash	HOT updates. When we update a tuple without changing any of its indexed	2007-09-20 17:56:33 +00:00
heap	HOT updates. When we update a tuple without changing any of its indexed	2007-09-20 17:56:33 +00:00
index	HOT updates. When we update a tuple without changing any of its indexed	2007-09-20 17:56:33 +00:00
nbtree	HOT updates. When we update a tuple without changing any of its indexed	2007-09-20 17:56:33 +00:00
transam	Rename recently-added pg_stat_activity column from txn_start to xact_start,	2007-09-11 03:28:05 +00:00
Makefile	Replace useless uses of := by = in makefiles.	2007-02-09 15:56:00 +00:00