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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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2
src/backend/nodes/readfuncs.c
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@ -427,6 +427,7 @@ _readConstraint(void)
case CONSTR_PRIMARY:
READ_NODE_FIELD(keys);
READ_BOOL_FIELD(without_overlaps);
READ_NODE_FIELD(including);
READ_NODE_FIELD(options);
READ_STRING_FIELD(indexname);
@ -438,6 +439,7 @@ _readConstraint(void)
case CONSTR_UNIQUE:
READ_BOOL_FIELD(nulls_not_distinct);
READ_NODE_FIELD(keys);
READ_BOOL_FIELD(without_overlaps);
READ_NODE_FIELD(including);
READ_NODE_FIELD(options);
READ_STRING_FIELD(indexname);