31 lines
1.5 KiB
Plaintext
31 lines
1.5 KiB
Plaintext
--
|
|
-- Validate WAL generation metrics
|
|
--
|
|
SET pg_stat_statements.track_utility = FALSE;
|
|
CREATE TABLE pgss_wal_tab (a int, b char(20));
|
|
INSERT INTO pgss_wal_tab VALUES(generate_series(1, 10), 'aaa');
|
|
UPDATE pgss_wal_tab SET b = 'bbb' WHERE a > 7;
|
|
DELETE FROM pgss_wal_tab WHERE a > 9;
|
|
DROP TABLE pgss_wal_tab;
|
|
-- Check WAL is generated for the above statements
|
|
SELECT query, calls, rows,
|
|
wal_bytes > 0 as wal_bytes_generated,
|
|
wal_records > 0 as wal_records_generated,
|
|
wal_records >= rows as wal_records_ge_rows
|
|
FROM pg_stat_statements ORDER BY query COLLATE "C";
|
|
query | calls | rows | wal_bytes_generated | wal_records_generated | wal_records_ge_rows
|
|
--------------------------------------------------------------+-------+------+---------------------+-----------------------+---------------------
|
|
DELETE FROM pgss_wal_tab WHERE a > $1 | 1 | 1 | t | t | t
|
|
INSERT INTO pgss_wal_tab VALUES(generate_series($1, $2), $3) | 1 | 10 | t | t | t
|
|
SELECT pg_stat_statements_reset() IS NOT NULL AS t | 1 | 1 | f | f | f
|
|
SET pg_stat_statements.track_utility = FALSE | 1 | 0 | f | f | t
|
|
UPDATE pgss_wal_tab SET b = $1 WHERE a > $2 | 1 | 3 | t | t | t
|
|
(5 rows)
|
|
|
|
SELECT pg_stat_statements_reset() IS NOT NULL AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|