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--
-- 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 = $1 | 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)
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