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