blob: 5b7783b58f3d8d4b1699e4236ec39daf82339e86 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
--
-- Commit Timestamp
--
SHOW track_commit_timestamp;
track_commit_timestamp
------------------------
on
(1 row)
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;
id | ?column? | ?column? | ?column?
----+----------+----------+----------
1 | t | t | t
2 | t | t | t
3 | t | t | t
(3 rows)
DROP TABLE committs_test;
SELECT pg_xact_commit_timestamp('0'::xid);
ERROR: cannot retrieve commit timestamp for transaction 0
SELECT pg_xact_commit_timestamp('1'::xid);
pg_xact_commit_timestamp
--------------------------
(1 row)
SELECT pg_xact_commit_timestamp('2'::xid);
pg_xact_commit_timestamp
--------------------------
(1 row)
SELECT x.xid::text::bigint > 0, x.timestamp > '-infinity'::timestamptz, x.timestamp <= now() FROM pg_last_committed_xact() x;
?column? | ?column? | ?column?
----------+----------+----------
t | t | t
(1 row)
|
