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Add temporal PRIMARY KEY and UNIQUE constraints

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Add WITHOUT OVERLAPS clause to PRIMARY KEY and UNIQUE constraints.
These are backed by GiST indexes instead of B-tree indexes, since they
are essentially exclusion constraints with = for the scalar parts of
the key and && for the temporal part.

Author: Paul A. Jungwirth <pj@illuminatedcomputing.com>
Reviewed-by: Peter Eisentraut <peter@eisentraut.org>
Reviewed-by: jian he <jian.universality@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/CA+renyUApHgSZF9-nd-a0+OPGharLQLO=mDHcY4_qQ0+noCUVg@mail.gmail.com
This commit is contained in:
Peter Eisentraut
2024-01-24 15:43:41 +01:00
parent 74a7306310
commit 46a0cd4cef
34 changed files with 1135 additions and 52 deletions
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6
src/backend/commands/tablecmds.c
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@ -10340,6 +10340,7 @@ addFkRecurseReferenced(List **wqueue, Constraint *fkconstraint, Relation rel,
conislocal, /* islocal */
coninhcount, /* inhcount */
connoinherit, /* conNoInherit */
false, /* conWithoutOverlaps */
false); /* is_internal */
ObjectAddressSet(address, ConstraintRelationId, constrOid);
@ -10638,6 +10639,7 @@ addFkRecurseReferencing(List **wqueue, Constraint *fkconstraint, Relation rel,
false,
1,
false,
false, /* conWithoutOverlaps */
false);
/*
@ -11143,6 +11145,7 @@ CloneFkReferencing(List **wqueue, Relation parentRel, Relation partRel)
false, /* islocal */
1, /* inhcount */
false, /* conNoInherit */
false, /* conWithoutOverlaps */
true);
/* Set up partition dependencies for the new constraint */
@ -14556,7 +14559,8 @@ TryReuseIndex(Oid oldId, IndexStmt *stmt)
if (CheckIndexCompatible(oldId,
stmt->accessMethod,
stmt->indexParams,
stmt->excludeOpNames))
stmt->excludeOpNames,
stmt->iswithoutoverlaps))
{
Relation irel = index_open(oldId, NoLock);