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Tom Lane 32ea236361 Improve the IndexVacuumInfo/IndexBulkDeleteResult API to allow somewhat sane ... behavior in cases where we don't know the heap tuple count accurately; in particular partial vacuum, but this also makes the API a bit more useful for ANALYZE. This patch adds "estimated_count" flags to both structs so that an approximate count can be flagged as such, and adjusts the logic so that approximate counts are not used for updating pg_class.reltuples. This fixes my previous complaint that VACUUM was putting ridiculous values into pg_class.reltuples for indexes. The actual impact of that bug is limited, because the planner only pays attention to reltuples for an index if the index is partial; which probably explains why beta testers hadn't noticed a degradation in plan quality from it. But it needs to be fixed. The whole thing is a bit messy and should be redesigned in future, because reltuples now has the potential to drift quite far away from reality when a long period elapses with no non-partial vacuums. But this is as good as it's going to get for 8.4.		17 years ago
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attnum.h	Update copyright for 2009.	17 years ago
clog.h	Update copyright for 2009.	17 years ago
genam.h	Improve the IndexVacuumInfo/IndexBulkDeleteResult API to allow somewhat sane	17 years ago
gin.h	Fix a serious bug introduced into GIN in 8.4: now that MergeItemPointers()	17 years ago
gist.h	Update copyright for 2009.	17 years ago
gist_private.h	Update copyright for 2009.	17 years ago
gistscan.h	Update copyright for 2009.	17 years ago
hash.h	Update copyright for 2009.	17 years ago
heapam.h	Fix LOCK TABLE to eliminate the race condition that could make it give weird	17 years ago
hio.h	Update copyright for 2009.	17 years ago
htup.h	Update copyright for 2009.	17 years ago
itup.h	Update copyright for 2009.	17 years ago
multixact.h	Update copyright for 2009.	17 years ago
nbtree.h	Update copyright for 2009.	17 years ago
printtup.h	Update copyright for 2009.	17 years ago
reloptions.h	Use more-portable coding for the check on handing out the last available	17 years ago
relscan.h	Update copyright for 2009.	17 years ago
rewriteheap.h	Update copyright for 2009.	17 years ago
rmgr.h	Rethink the way FSM truncation works. Instead of WAL-logging FSM	17 years ago
sdir.h	Update copyright for 2009.	17 years ago
skey.h	Update copyright for 2009.	17 years ago
slru.h	Update copyright for 2009.	17 years ago
subtrans.h	Update copyright for 2009.	17 years ago
sysattr.h	Update copyright for 2009.	17 years ago
transam.h	'PGDLLIMPORT' ShmemVariableCache, needed for pg_migrator.so function	17 years ago
tupdesc.h	Update copyright for 2009.	17 years ago
tupmacs.h	Update copyright for 2009.	17 years ago
tuptoaster.h	Update copyright for 2009.	17 years ago
twophase.h	Update copyright for 2009.	17 years ago
twophase_rmgr.h	Update copyright for 2009.	17 years ago
valid.h	Update copyright for 2009.	17 years ago
visibilitymap.h	Update copyright for 2009.	17 years ago
xact.h	Update copyright for 2009.	17 years ago
xlog.h	Start background writer during archive recovery. Background writer now performs	17 years ago
xlog_internal.h	Update copyright for 2009.	17 years ago
xlogdefs.h	Update copyright for 2009.	17 years ago
xlogutils.h	Update copyright for 2009.	17 years ago