mirror of
https://github.com/postgres/postgres.git
synced 2026-02-27 03:40:28 -05:00
07cacba983
Pending patches for logical replication will use this to determine which columns of a tuple ought to be considered as its candidate key. Andres Freund, with minor, mostly cosmetic adjustments by me
79 lines
3.7 KiB
SQL
79 lines
3.7 KiB
SQL
CREATE TABLE test_replica_identity (
|
|
id serial primary key,
|
|
keya text not null,
|
|
keyb text not null,
|
|
nonkey text,
|
|
CONSTRAINT test_replica_identity_unique_defer UNIQUE (keya, keyb) DEFERRABLE,
|
|
CONSTRAINT test_replica_identity_unique_nondefer UNIQUE (keya, keyb)
|
|
);
|
|
|
|
CREATE TABLE test_replica_identity_othertable (id serial primary key);
|
|
|
|
CREATE INDEX test_replica_identity_keyab ON test_replica_identity (keya, keyb);
|
|
CREATE UNIQUE INDEX test_replica_identity_keyab_key ON test_replica_identity (keya, keyb);
|
|
CREATE UNIQUE INDEX test_replica_identity_nonkey ON test_replica_identity (keya, nonkey);
|
|
CREATE INDEX test_replica_identity_hash ON test_replica_identity USING hash (nonkey);
|
|
CREATE UNIQUE INDEX test_replica_identity_expr ON test_replica_identity (keya, keyb, (3));
|
|
CREATE UNIQUE INDEX test_replica_identity_partial ON test_replica_identity (keya, keyb) WHERE keyb != '3';
|
|
|
|
-- default is 'd'/DEFAULT for user created tables
|
|
SELECT relreplident FROM pg_class WHERE oid = 'test_replica_identity'::regclass;
|
|
-- but 'none' for system tables
|
|
SELECT relreplident FROM pg_class WHERE oid = 'pg_class'::regclass;
|
|
SELECT relreplident FROM pg_class WHERE oid = 'pg_constraint'::regclass;
|
|
|
|
----
|
|
-- Make sure we detect inelegible indexes
|
|
----
|
|
|
|
-- fail, not unique
|
|
ALTER TABLE test_replica_identity REPLICA IDENTITY USING INDEX test_replica_identity_keyab;
|
|
-- fail, not a candidate key, nullable column
|
|
ALTER TABLE test_replica_identity REPLICA IDENTITY USING INDEX test_replica_identity_nonkey;
|
|
-- fail, hash indexes cannot do uniqueness
|
|
ALTER TABLE test_replica_identity REPLICA IDENTITY USING INDEX test_replica_identity_hash;
|
|
-- fail, expression index
|
|
ALTER TABLE test_replica_identity REPLICA IDENTITY USING INDEX test_replica_identity_expr;
|
|
-- fail, partial index
|
|
ALTER TABLE test_replica_identity REPLICA IDENTITY USING INDEX test_replica_identity_partial;
|
|
-- fail, not our index
|
|
ALTER TABLE test_replica_identity REPLICA IDENTITY USING INDEX test_replica_identity_othertable_pkey;
|
|
-- fail, deferrable
|
|
ALTER TABLE test_replica_identity REPLICA IDENTITY USING INDEX test_replica_identity_unique_defer;
|
|
|
|
SELECT relreplident FROM pg_class WHERE oid = 'test_replica_identity'::regclass;
|
|
|
|
----
|
|
-- Make sure index cases succeeed
|
|
----
|
|
|
|
-- succeed, primary key
|
|
ALTER TABLE test_replica_identity REPLICA IDENTITY USING INDEX test_replica_identity_pkey;
|
|
SELECT relreplident FROM pg_class WHERE oid = 'test_replica_identity'::regclass;
|
|
\d test_replica_identity
|
|
|
|
-- succeed, nondeferrable unique constraint over nonullable cols
|
|
ALTER TABLE test_replica_identity REPLICA IDENTITY USING INDEX test_replica_identity_unique_nondefer;
|
|
|
|
-- succeed unique index over nonnullable cols
|
|
ALTER TABLE test_replica_identity REPLICA IDENTITY USING INDEX test_replica_identity_keyab_key;
|
|
ALTER TABLE test_replica_identity REPLICA IDENTITY USING INDEX test_replica_identity_keyab_key;
|
|
SELECT relreplident FROM pg_class WHERE oid = 'test_replica_identity'::regclass;
|
|
\d test_replica_identity
|
|
SELECT count(*) FROM pg_index WHERE indrelid = 'test_replica_identity'::regclass AND indisreplident;
|
|
|
|
----
|
|
-- Make sure non index cases work
|
|
----
|
|
ALTER TABLE test_replica_identity REPLICA IDENTITY DEFAULT;
|
|
SELECT relreplident FROM pg_class WHERE oid = 'test_replica_identity'::regclass;
|
|
SELECT count(*) FROM pg_index WHERE indrelid = 'test_replica_identity'::regclass AND indisreplident;
|
|
|
|
ALTER TABLE test_replica_identity REPLICA IDENTITY FULL;
|
|
SELECT relreplident FROM pg_class WHERE oid = 'test_replica_identity'::regclass;
|
|
\d test_replica_identity
|
|
ALTER TABLE test_replica_identity REPLICA IDENTITY NOTHING;
|
|
SELECT relreplident FROM pg_class WHERE oid = 'test_replica_identity'::regclass;
|
|
|
|
DROP TABLE test_replica_identity;
|
|
DROP TABLE test_replica_identity_othertable;
|