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Jan Wieck cd203f3395 Avoid primary key lookup (and lock) if foreign key does not change ... on UPDATE. This get's rid of the long standing annoyance that updating a row that has foreign keys locks all the referenced rows even if the foreign key values do not change. The trick is to actually do a check identical to NO ACTION after an eventually done UPDATE in the SET DEFAULT case. Since a SET DEFAULT operation should have moved referencing rows to a new "home", a following NO ACTION check can only fail if the column defaults of the referencing table resulted in the key we actually deleted. Thanks to Stephan. Jan		23 years ago
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adt	Avoid primary key lookup (and lock) if foreign key does not change	23 years ago
cache	Instead of storing pg_statistic stavalues entries as text strings, store	23 years ago
error	Add start time to pg_stat_activity	23 years ago
fmgr	Fix compile problem with Win32 macro used inside another macro.	23 years ago
hash	Got tired of explaining why this Assert is not wrong.	24 years ago
init	Add Win32 path handling for / vs. \ and drive letters.	23 years ago
mb	This is a derived file and should never have been added to CVS.	23 years ago
misc	Add Win32 path handling for / vs. \ and drive letters.	23 years ago
mmgr	This patch implements holdable cursors, following the proposal	23 years ago
sort	This patch implements holdable cursors, following the proposal	23 years ago
time	btree page recycling can be done as soon as page's next-xact label is	23 years ago
.cvsignore	Cleanup to ensure good state of derived files in tarballs.	26 years ago
Gen_fmgrtab.sh	Remove unused system table columns:	24 years ago
Makefile	Remove all traces of multibyte and locale options. Clean up comments	24 years ago