src/test/modules/commit_ts/sql/commit_timestamp.sql


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

--
-- Commit Timestamp
--
SHOW track_commit_timestamp;
CREATE TABLE committs_test(id serial, ts timestamptz default now());

INSERT INTO committs_test DEFAULT VALUES;
INSERT INTO committs_test DEFAULT VALUES;
INSERT INTO committs_test DEFAULT VALUES;

SELECT id,
       pg_xact_commit_timestamp(xmin) >= ts,
       pg_xact_commit_timestamp(xmin) <= now(),
       pg_xact_commit_timestamp(xmin) - ts < '60s' -- 60s should give a lot of reserve
FROM committs_test
ORDER BY id;

DROP TABLE committs_test;

SELECT pg_xact_commit_timestamp('0'::xid);
SELECT pg_xact_commit_timestamp('1'::xid);
SELECT pg_xact_commit_timestamp('2'::xid);

SELECT x.xid::text::bigint > 0, x.timestamp > '-infinity'::timestamptz, x.timestamp <= now() FROM pg_last_committed_xact() x;