160 lines
4.5 KiB
Plaintext
160 lines
4.5 KiB
Plaintext
--
|
|
-- statement timestamps
|
|
--
|
|
-- planning time is needed during tests
|
|
SET pg_stat_statements.track_planning = TRUE;
|
|
SELECT 1 AS "STMTTS1";
|
|
STMTTS1
|
|
---------
|
|
1
|
|
(1 row)
|
|
|
|
SELECT now() AS ref_ts \gset
|
|
SELECT 1,2 AS "STMTTS2";
|
|
?column? | STMTTS2
|
|
----------+---------
|
|
1 | 2
|
|
(1 row)
|
|
|
|
SELECT stats_since >= :'ref_ts', count(*) FROM pg_stat_statements
|
|
WHERE query LIKE '%STMTTS%'
|
|
GROUP BY stats_since >= :'ref_ts'
|
|
ORDER BY stats_since >= :'ref_ts';
|
|
?column? | count
|
|
----------+-------
|
|
f | 1
|
|
t | 1
|
|
(2 rows)
|
|
|
|
SELECT now() AS ref_ts \gset
|
|
SELECT
|
|
count(*) as total,
|
|
count(*) FILTER (
|
|
WHERE min_plan_time + max_plan_time = 0
|
|
) as minmax_plan_zero,
|
|
count(*) FILTER (
|
|
WHERE min_exec_time + max_exec_time = 0
|
|
) as minmax_exec_zero,
|
|
count(*) FILTER (
|
|
WHERE minmax_stats_since >= :'ref_ts'
|
|
) as minmax_stats_since_after_ref,
|
|
count(*) FILTER (
|
|
WHERE stats_since >= :'ref_ts'
|
|
) as stats_since_after_ref
|
|
FROM pg_stat_statements
|
|
WHERE query LIKE '%STMTTS%';
|
|
total | minmax_plan_zero | minmax_exec_zero | minmax_stats_since_after_ref | stats_since_after_ref
|
|
-------+------------------+------------------+------------------------------+-----------------------
|
|
2 | 0 | 0 | 0 | 0
|
|
(1 row)
|
|
|
|
-- Perform single min/max reset
|
|
SELECT pg_stat_statements_reset(0, 0, queryid, true) AS minmax_reset_ts
|
|
FROM pg_stat_statements
|
|
WHERE query LIKE '%STMTTS1%' \gset
|
|
-- check
|
|
SELECT
|
|
count(*) as total,
|
|
count(*) FILTER (
|
|
WHERE min_plan_time + max_plan_time = 0
|
|
) as minmax_plan_zero,
|
|
count(*) FILTER (
|
|
WHERE min_exec_time + max_exec_time = 0
|
|
) as minmax_exec_zero,
|
|
count(*) FILTER (
|
|
WHERE minmax_stats_since >= :'ref_ts'
|
|
) as minmax_stats_since_after_ref,
|
|
count(*) FILTER (
|
|
WHERE stats_since >= :'ref_ts'
|
|
) as stats_since_after_ref
|
|
FROM pg_stat_statements
|
|
WHERE query LIKE '%STMTTS%';
|
|
total | minmax_plan_zero | minmax_exec_zero | minmax_stats_since_after_ref | stats_since_after_ref
|
|
-------+------------------+------------------+------------------------------+-----------------------
|
|
2 | 1 | 1 | 1 | 0
|
|
(1 row)
|
|
|
|
-- check minmax reset timestamps
|
|
SELECT
|
|
query, minmax_stats_since = :'minmax_reset_ts' AS reset_ts_match
|
|
FROM pg_stat_statements
|
|
WHERE query LIKE '%STMTTS%'
|
|
ORDER BY query COLLATE "C";
|
|
query | reset_ts_match
|
|
---------------------------+----------------
|
|
SELECT $1 AS "STMTTS1" | t
|
|
SELECT $1,$2 AS "STMTTS2" | f
|
|
(2 rows)
|
|
|
|
-- check that minmax reset does not set stats_reset
|
|
SELECT
|
|
stats_reset = :'minmax_reset_ts' AS stats_reset_ts_match
|
|
FROM pg_stat_statements_info;
|
|
stats_reset_ts_match
|
|
----------------------
|
|
f
|
|
(1 row)
|
|
|
|
-- Perform common min/max reset
|
|
SELECT pg_stat_statements_reset(0, 0, 0, true) AS minmax_reset_ts \gset
|
|
-- check again
|
|
SELECT
|
|
count(*) as total,
|
|
count(*) FILTER (
|
|
WHERE min_plan_time + max_plan_time = 0
|
|
) as minmax_plan_zero,
|
|
count(*) FILTER (
|
|
WHERE min_exec_time + max_exec_time = 0
|
|
) as minmax_exec_zero,
|
|
count(*) FILTER (
|
|
WHERE minmax_stats_since >= :'ref_ts'
|
|
) as minmax_ts_after_ref,
|
|
count(*) FILTER (
|
|
WHERE minmax_stats_since = :'minmax_reset_ts'
|
|
) as minmax_ts_match,
|
|
count(*) FILTER (
|
|
WHERE stats_since >= :'ref_ts'
|
|
) as stats_since_after_ref
|
|
FROM pg_stat_statements
|
|
WHERE query LIKE '%STMTTS%';
|
|
total | minmax_plan_zero | minmax_exec_zero | minmax_ts_after_ref | minmax_ts_match | stats_since_after_ref
|
|
-------+------------------+------------------+---------------------+-----------------+-----------------------
|
|
2 | 2 | 2 | 2 | 2 | 0
|
|
(1 row)
|
|
|
|
-- Execute first query once more to check stats update
|
|
SELECT 1 AS "STMTTS1";
|
|
STMTTS1
|
|
---------
|
|
1
|
|
(1 row)
|
|
|
|
-- check
|
|
-- we don't check planing times here to be independent of
|
|
-- plan caching approach
|
|
SELECT
|
|
count(*) as total,
|
|
count(*) FILTER (
|
|
WHERE min_exec_time + max_exec_time = 0
|
|
) as minmax_exec_zero,
|
|
count(*) FILTER (
|
|
WHERE minmax_stats_since >= :'ref_ts'
|
|
) as minmax_ts_after_ref,
|
|
count(*) FILTER (
|
|
WHERE stats_since >= :'ref_ts'
|
|
) as stats_since_after_ref
|
|
FROM pg_stat_statements
|
|
WHERE query LIKE '%STMTTS%';
|
|
total | minmax_exec_zero | minmax_ts_after_ref | stats_since_after_ref
|
|
-------+------------------+---------------------+-----------------------
|
|
2 | 1 | 2 | 0
|
|
(1 row)
|
|
|
|
-- Cleanup
|
|
SELECT pg_stat_statements_reset() IS NOT NULL AS t;
|
|
t
|
|
---
|
|
t
|
|
(1 row)
|
|
|