diff options
| author | Peter Eisentraut <peter@eisentraut.org> | 2024-09-17 10:41:07 +0200 |
|---|---|---|
| committer | Peter Eisentraut <peter@eisentraut.org> | 2024-09-17 11:29:30 +0200 |
| commit | 89f908a6d0ac1337c868625008c9598487d184e7 (patch) | |
| tree | 921f1ed85307ba60fcca28b8513f18f78cb1e031 /src/include/nodes/parsenodes.h | |
| parent | fc0438b4e80535419a4e54dba87642cdf84defda (diff) | |
Add temporal FOREIGN KEY contraints
Add PERIOD clause to foreign key constraint definitions. This is
supported for range and multirange types. Temporal foreign keys check
for range containment instead of equality.
This feature matches the behavior of the SQL standard temporal foreign
keys, but it works on PostgreSQL's native ranges instead of SQL's
"periods", which don't exist in PostgreSQL (yet).
Reference actions ON {UPDATE,DELETE} {CASCADE,SET NULL,SET DEFAULT}
are not supported yet.
(previously committed as 34768ee3616, reverted by 8aee330af55; this is
essentially unchanged from those)
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
Diffstat (limited to 'src/include/nodes/parsenodes.h')
| -rw-r--r-- | src/include/nodes/parsenodes.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h index 7e58db25268..e62ce1b7536 100644 --- a/src/include/nodes/parsenodes.h +++ b/src/include/nodes/parsenodes.h @@ -2761,6 +2761,8 @@ typedef struct Constraint RangeVar *pktable; /* Primary key table */ List *fk_attrs; /* Attributes of foreign key */ List *pk_attrs; /* Corresponding attrs in PK table */ + bool fk_with_period; /* Last attribute of FK uses PERIOD */ + bool pk_with_period; /* Last attribute of PK uses PERIOD */ char fk_matchtype; /* FULL, PARTIAL, SIMPLE */ char fk_upd_action; /* ON UPDATE action */ char fk_del_action; /* ON DELETE action */ |