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Support deferrable uniqueness constraints.

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The current implementation fires an AFTER ROW trigger for each tuple that
looks like it might be non-unique according to the index contents at the
time of insertion.  This works well as long as there aren't many conflicts,
but won't scale to massive unique-key reassignments.  Improving that case
is a TODO item.

Dean Rasheed
This commit is contained in:
Tom Lane
2009-07-29 20:56:21 +00:00
parent 8504905793
commit 25d9bf2e3e
51 changed files with 1241 additions and 245 deletions
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4
src/backend/commands/Makefile
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@@ -4,7 +4,7 @@
# Makefile for backend/commands
#
# IDENTIFICATION
# $PostgreSQL: pgsql/src/backend/commands/Makefile,v 1.39 2008/12/19 16:25:17 petere Exp $
# $PostgreSQL: pgsql/src/backend/commands/Makefile,v 1.40 2009/07/29 20:56:18 tgl Exp $
#
#-------------------------------------------------------------------------
@@ -13,7 +13,7 @@ top_builddir = ../../..
include $(top_builddir)/src/Makefile.global
OBJS = aggregatecmds.o alter.o analyze.o async.o cluster.o comment.o \
conversioncmds.o copy.o \
constraint.o conversioncmds.o copy.o \
dbcommands.o define.o discard.o explain.o foreigncmds.o functioncmds.o \
indexcmds.o lockcmds.o operatorcmds.o opclasscmds.o \
portalcmds.o prepare.o proclang.o \