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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bench	Provide for logfiles in machine readable CSV format. In consequence, rename	2007-08-19 01:41:25 +00:00
examples	Wording cleanup for error messages. Also change can't -> cannot.	2007-02-01 19:10:30 +00:00
locale	$Header: -> $PostgreSQL Changes ...	2003-11-29 19:52:15 +00:00
mb	Change the backend to reject strings containing invalidly-encoded multibyte	2006-05-21 20:05:21 +00:00
performance	Add CVS tag lines to files that were lacking them.	2006-03-11 04:38:42 +00:00
regress	HOT updates. When we update a tuple without changing any of its indexed	2007-09-20 17:56:33 +00:00
thread	Wording cleanup for error messages. Also change can't -> cannot.	2007-02-01 19:10:30 +00:00
Makefile	$Header: -> $PostgreSQL Changes ...	2003-11-29 19:52:15 +00:00