mirror of
https://github.com/percona/pg_stat_monitor.git
synced 2026-02-04 14:06:20 +00:00
Fix nesting level tracking
This commit is contained in:
Artem Gavrilov
@@ -69,6 +69,61 @@ SELECT toplevel, calls, query FROM pg_stat_monitor
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t | 1 | SET pg_stat_monitor.pgsm_track = 'all'
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(7 rows)
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-- DO block - top-level tracking without utility.
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SET pg_stat_monitor.pgsm_track = 'top';
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SET pg_stat_monitor.pgsm_track_utility = FALSE;
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SELECT pg_stat_monitor_reset();
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pg_stat_monitor_reset
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-----------------------
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(1 row)
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DELETE FROM stats_track_tab;
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DO $$
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BEGIN
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DELETE FROM stats_track_tab;
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END; $$;
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DO LANGUAGE plpgsql $$
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BEGIN
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-- this is a SELECT
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PERFORM 'hello world'::TEXT;
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END; $$;
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SELECT toplevel, calls, query FROM pg_stat_monitor
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ORDER BY query COLLATE "C", toplevel;
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toplevel | calls | query
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----------+-------+--------------------------------
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t | 1 | DELETE FROM stats_track_tab
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t | 1 | SELECT pg_stat_monitor_reset()
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(2 rows)
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-- DO block - all-level tracking without utility.
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SET pg_stat_monitor.pgsm_track = 'all';
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SELECT pg_stat_monitor_reset();
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pg_stat_monitor_reset
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-----------------------
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(1 row)
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DELETE FROM stats_track_tab;
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DO $$
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BEGIN
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DELETE FROM stats_track_tab;
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END; $$;
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DO LANGUAGE plpgsql $$
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BEGIN
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-- this is a SELECT
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PERFORM 'hello world'::TEXT;
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END; $$;
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SELECT toplevel, calls, query FROM pg_stat_monitor
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ORDER BY query COLLATE "C", toplevel;
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toplevel | calls | query
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----------+-------+--------------------------------
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f | 1 | DELETE FROM stats_track_tab
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t | 1 | DELETE FROM stats_track_tab
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f | 1 | SELECT $1::TEXT
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t | 1 | SELECT pg_stat_monitor_reset()
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(4 rows)
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-- PL/pgSQL function - top-level tracking.
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SET pg_stat_monitor.pgsm_track = 'top';
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SET pg_stat_monitor.pgsm_track_utility = FALSE;
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@@ -120,6 +175,31 @@ SELECT calls, rows, query FROM pg_stat_monitor ORDER BY query COLLATE "C";
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1 | 1 | SELECT pg_stat_monitor_reset()
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(3 rows)
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-- immutable SQL function --- can be executed at plan time
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CREATE FUNCTION PLUS_THREE(i INTEGER) RETURNS INTEGER AS
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$$ SELECT i + 3 LIMIT 1 $$ IMMUTABLE LANGUAGE SQL;
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SELECT PLUS_THREE(8);
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plus_three
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------------
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11
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(1 row)
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SELECT PLUS_THREE(10);
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plus_three
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------------
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13
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(1 row)
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SELECT toplevel, calls, rows, query FROM pg_stat_monitor ORDER BY query COLLATE "C";
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toplevel | calls | rows | query
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----------+-------+------+---------------------------------------------------------------------------
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t | 2 | 2 | SELECT PLUS_ONE($1)
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t | 2 | 2 | SELECT PLUS_THREE($1)
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t | 2 | 2 | SELECT PLUS_TWO($1)
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t | 1 | 3 | SELECT calls, rows, query FROM pg_stat_monitor ORDER BY query COLLATE "C"
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t | 1 | 1 | SELECT pg_stat_monitor_reset()
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(5 rows)
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-- PL/pgSQL function - all-level tracking.
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SET pg_stat_monitor.pgsm_track = 'all';
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SELECT pg_stat_monitor_reset();
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@@ -131,6 +211,7 @@ SELECT pg_stat_monitor_reset();
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-- we drop and recreate the functions to avoid any caching funnies
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DROP FUNCTION PLUS_ONE(INTEGER);
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DROP FUNCTION PLUS_TWO(INTEGER);
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DROP FUNCTION PLUS_THREE(INTEGER);
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-- PL/pgSQL function
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CREATE FUNCTION PLUS_TWO(i INTEGER) RETURNS INTEGER AS $$
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DECLARE
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@@ -176,7 +257,34 @@ SELECT calls, rows, query FROM pg_stat_monitor ORDER BY query COLLATE "C";
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1 | 1 | SELECT pg_stat_monitor_reset()
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(5 rows)
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DROP FUNCTION PLUS_ONE(INTEGER);
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-- immutable SQL function --- can be executed at plan time
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CREATE FUNCTION PLUS_THREE(i INTEGER) RETURNS INTEGER AS
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$$ SELECT i + 3 LIMIT 1 $$ IMMUTABLE LANGUAGE SQL;
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SELECT PLUS_THREE(8);
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plus_three
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------------
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11
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(1 row)
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SELECT PLUS_THREE(10);
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plus_three
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------------
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13
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(1 row)
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SELECT toplevel, calls, rows, query FROM pg_stat_monitor ORDER BY query COLLATE "C";
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toplevel | calls | rows | query
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----------+-------+------+---------------------------------------------------------------------------
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f | 2 | 2 | SELECT (i + $2 + $3)::INTEGER
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f | 2 | 2 | SELECT (i + $2)::INTEGER LIMIT $3
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t | 2 | 2 | SELECT PLUS_ONE($1)
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t | 2 | 2 | SELECT PLUS_THREE($1)
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t | 2 | 2 | SELECT PLUS_TWO($1)
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t | 1 | 5 | SELECT calls, rows, query FROM pg_stat_monitor ORDER BY query COLLATE "C"
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f | 2 | 2 | SELECT i + $2 LIMIT $3
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t | 1 | 1 | SELECT pg_stat_monitor_reset()
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(8 rows)
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--
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-- pg_stat_monitor.pgsm_track = none
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--
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322
regression/expected/level_tracking_1.out
Normal file
322
regression/expected/level_tracking_1.out
Normal file
@@ -0,0 +1,322 @@
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--
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-- Statement level tracking
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--
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CREATE EXTENSION pg_stat_monitor;
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SET pg_stat_monitor.pgsm_track_utility = TRUE;
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SET pg_stat_monitor.pgsm_normalized_query = TRUE;
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SELECT pg_stat_monitor_reset();
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pg_stat_monitor_reset
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-----------------------
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(1 row)
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-- DO block - top-level tracking.
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CREATE TABLE stats_track_tab (x int);
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SET pg_stat_monitor.pgsm_track = 'top';
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DELETE FROM stats_track_tab;
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DO $$
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BEGIN
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DELETE FROM stats_track_tab;
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END;
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$$ LANGUAGE plpgsql;
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SELECT toplevel, calls, query FROM pg_stat_monitor
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WHERE query LIKE '%DELETE%' ORDER BY query COLLATE "C", toplevel;
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toplevel | calls | query
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----------+-------+--------------------------------
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t | 1 | DELETE FROM stats_track_tab
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t | 1 | DO $$ +
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| | BEGIN +
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| | DELETE FROM stats_track_tab;+
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| | END; +
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| | $$ LANGUAGE plpgsql
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(2 rows)
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SELECT pg_stat_monitor_reset();
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pg_stat_monitor_reset
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-----------------------
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(1 row)
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-- DO block - all-level tracking.
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SET pg_stat_monitor.pgsm_track = 'all';
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DELETE FROM stats_track_tab;
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DO $$
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BEGIN
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DELETE FROM stats_track_tab;
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END; $$;
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DO LANGUAGE plpgsql $$
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BEGIN
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-- this is a SELECT
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PERFORM 'hello world'::TEXT;
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END; $$;
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SELECT toplevel, calls, query FROM pg_stat_monitor
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ORDER BY query COLLATE "C", toplevel;
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toplevel | calls | query
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----------+-------+----------------------------------------
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f | 1 | DELETE FROM stats_track_tab
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t | 1 | DELETE FROM stats_track_tab
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t | 1 | DO $$ +
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| | BEGIN +
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| | DELETE FROM stats_track_tab; +
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| | END; $$
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t | 1 | DO LANGUAGE plpgsql $$ +
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| | BEGIN +
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| | -- this is a SELECT +
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| | PERFORM 'hello world'::TEXT; +
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| | END; $$
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f | 1 | SELECT $1::TEXT
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t | 1 | SELECT pg_stat_monitor_reset()
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t | 1 | SET pg_stat_monitor.pgsm_track = 'all'
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(7 rows)
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-- DO block - top-level tracking without utility.
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SET pg_stat_monitor.pgsm_track = 'top';
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SET pg_stat_monitor.pgsm_track_utility = FALSE;
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SELECT pg_stat_monitor_reset();
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pg_stat_monitor_reset
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-----------------------
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(1 row)
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DELETE FROM stats_track_tab;
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DO $$
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BEGIN
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DELETE FROM stats_track_tab;
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END; $$;
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DO LANGUAGE plpgsql $$
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BEGIN
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-- this is a SELECT
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PERFORM 'hello world'::TEXT;
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END; $$;
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SELECT toplevel, calls, query FROM pg_stat_monitor
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ORDER BY query COLLATE "C", toplevel;
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toplevel | calls | query
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----------+-------+--------------------------------
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t | 1 | DELETE FROM stats_track_tab
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t | 1 | SELECT pg_stat_monitor_reset()
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(2 rows)
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-- DO block - all-level tracking without utility.
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SET pg_stat_monitor.pgsm_track = 'all';
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SELECT pg_stat_monitor_reset();
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pg_stat_monitor_reset
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-----------------------
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(1 row)
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DELETE FROM stats_track_tab;
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DO $$
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BEGIN
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DELETE FROM stats_track_tab;
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END; $$;
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DO LANGUAGE plpgsql $$
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BEGIN
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-- this is a SELECT
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PERFORM 'hello world'::TEXT;
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END; $$;
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SELECT toplevel, calls, query FROM pg_stat_monitor
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ORDER BY query COLLATE "C", toplevel;
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toplevel | calls | query
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----------+-------+--------------------------------
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f | 1 | DELETE FROM stats_track_tab
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t | 1 | DELETE FROM stats_track_tab
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f | 1 | SELECT $1::TEXT
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t | 1 | SELECT pg_stat_monitor_reset()
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(4 rows)
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-- PL/pgSQL function - top-level tracking.
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SET pg_stat_monitor.pgsm_track = 'top';
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SET pg_stat_monitor.pgsm_track_utility = FALSE;
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SELECT pg_stat_monitor_reset();
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pg_stat_monitor_reset
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-----------------------
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(1 row)
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CREATE FUNCTION PLUS_TWO(i INTEGER) RETURNS INTEGER AS $$
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DECLARE
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r INTEGER;
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BEGIN
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SELECT (i + 1 + 1.0)::INTEGER INTO r;
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RETURN r;
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END; $$ LANGUAGE plpgsql;
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SELECT PLUS_TWO(3);
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plus_two
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----------
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5
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(1 row)
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SELECT PLUS_TWO(7);
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plus_two
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----------
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9
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(1 row)
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-- SQL function --- use LIMIT to keep it from being inlined
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CREATE FUNCTION PLUS_ONE(i INTEGER) RETURNS INTEGER AS
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$$ SELECT (i + 1.0)::INTEGER LIMIT 1 $$ LANGUAGE SQL;
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SELECT PLUS_ONE(8);
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plus_one
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----------
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9
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(1 row)
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SELECT PLUS_ONE(10);
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plus_one
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----------
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11
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(1 row)
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SELECT calls, rows, query FROM pg_stat_monitor ORDER BY query COLLATE "C";
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calls | rows | query
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-------+------+--------------------------------
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2 | 2 | SELECT PLUS_ONE($1)
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2 | 2 | SELECT PLUS_TWO($1)
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1 | 1 | SELECT pg_stat_monitor_reset()
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(3 rows)
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-- immutable SQL function --- can be executed at plan time
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CREATE FUNCTION PLUS_THREE(i INTEGER) RETURNS INTEGER AS
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$$ SELECT i + 3 LIMIT 1 $$ IMMUTABLE LANGUAGE SQL;
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SELECT PLUS_THREE(8);
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plus_three
|
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------------
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11
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(1 row)
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SELECT PLUS_THREE(10);
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plus_three
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------------
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13
|
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(1 row)
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SELECT toplevel, calls, rows, query FROM pg_stat_monitor ORDER BY query COLLATE "C";
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toplevel | calls | rows | query
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----------+-------+------+---------------------------------------------------------------------------
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t | 2 | 2 | SELECT PLUS_ONE($1)
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t | 2 | 2 | SELECT PLUS_THREE($1)
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t | 2 | 2 | SELECT PLUS_TWO($1)
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t | 1 | 3 | SELECT calls, rows, query FROM pg_stat_monitor ORDER BY query COLLATE "C"
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t | 2 | 2 | SELECT i + $2 LIMIT $3
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t | 1 | 1 | SELECT pg_stat_monitor_reset()
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(6 rows)
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-- PL/pgSQL function - all-level tracking.
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SET pg_stat_monitor.pgsm_track = 'all';
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SELECT pg_stat_monitor_reset();
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pg_stat_monitor_reset
|
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-----------------------
|
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|
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(1 row)
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-- we drop and recreate the functions to avoid any caching funnies
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DROP FUNCTION PLUS_ONE(INTEGER);
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DROP FUNCTION PLUS_TWO(INTEGER);
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DROP FUNCTION PLUS_THREE(INTEGER);
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-- PL/pgSQL function
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CREATE FUNCTION PLUS_TWO(i INTEGER) RETURNS INTEGER AS $$
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DECLARE
|
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r INTEGER;
|
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BEGIN
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SELECT (i + 1 + 1.0)::INTEGER INTO r;
|
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RETURN r;
|
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END; $$ LANGUAGE plpgsql;
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SELECT PLUS_TWO(-1);
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plus_two
|
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----------
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1
|
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(1 row)
|
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|
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SELECT PLUS_TWO(2);
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plus_two
|
||||
----------
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4
|
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(1 row)
|
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|
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-- SQL function --- use LIMIT to keep it from being inlined
|
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CREATE FUNCTION PLUS_ONE(i INTEGER) RETURNS INTEGER AS
|
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$$ SELECT (i + 1.0)::INTEGER LIMIT 1 $$ LANGUAGE SQL;
|
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SELECT PLUS_ONE(3);
|
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plus_one
|
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----------
|
||||
4
|
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(1 row)
|
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|
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SELECT PLUS_ONE(1);
|
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plus_one
|
||||
----------
|
||||
2
|
||||
(1 row)
|
||||
|
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SELECT calls, rows, query FROM pg_stat_monitor ORDER BY query COLLATE "C";
|
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calls | rows | query
|
||||
-------+------+-----------------------------------
|
||||
2 | 2 | SELECT (i + $2 + $3)::INTEGER
|
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2 | 2 | SELECT (i + $2)::INTEGER LIMIT $3
|
||||
2 | 2 | SELECT PLUS_ONE($1)
|
||||
2 | 2 | SELECT PLUS_TWO($1)
|
||||
1 | 1 | SELECT pg_stat_monitor_reset()
|
||||
(5 rows)
|
||||
|
||||
-- immutable SQL function --- can be executed at plan time
|
||||
CREATE FUNCTION PLUS_THREE(i INTEGER) RETURNS INTEGER AS
|
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$$ SELECT i + 3 LIMIT 1 $$ IMMUTABLE LANGUAGE SQL;
|
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SELECT PLUS_THREE(8);
|
||||
plus_three
|
||||
------------
|
||||
11
|
||||
(1 row)
|
||||
|
||||
SELECT PLUS_THREE(10);
|
||||
plus_three
|
||||
------------
|
||||
13
|
||||
(1 row)
|
||||
|
||||
SELECT toplevel, calls, rows, query FROM pg_stat_monitor ORDER BY query COLLATE "C";
|
||||
toplevel | calls | rows | query
|
||||
----------+-------+------+---------------------------------------------------------------------------
|
||||
f | 2 | 2 | SELECT (i + $2 + $3)::INTEGER
|
||||
f | 2 | 2 | SELECT (i + $2)::INTEGER LIMIT $3
|
||||
t | 2 | 2 | SELECT PLUS_ONE($1)
|
||||
t | 2 | 2 | SELECT PLUS_THREE($1)
|
||||
t | 2 | 2 | SELECT PLUS_TWO($1)
|
||||
t | 1 | 5 | SELECT calls, rows, query FROM pg_stat_monitor ORDER BY query COLLATE "C"
|
||||
t | 2 | 2 | SELECT i + $2 LIMIT $3
|
||||
t | 1 | 1 | SELECT pg_stat_monitor_reset()
|
||||
(8 rows)
|
||||
|
||||
--
|
||||
-- pg_stat_monitor.pgsm_track = none
|
||||
--
|
||||
SET pg_stat_monitor.pgsm_track = 'none';
|
||||
SELECT pg_stat_monitor_reset();
|
||||
pg_stat_monitor_reset
|
||||
-----------------------
|
||||
|
||||
(1 row)
|
||||
|
||||
SELECT 1 AS "one";
|
||||
one
|
||||
-----
|
||||
1
|
||||
(1 row)
|
||||
|
||||
SELECT 1 + 1 AS "two";
|
||||
two
|
||||
-----
|
||||
2
|
||||
(1 row)
|
||||
|
||||
SELECT calls, rows, query FROM pg_stat_monitor ORDER BY query COLLATE "C";
|
||||
calls | rows | query
|
||||
-------+------+-------
|
||||
(0 rows)
|
||||
|
||||
SELECT pg_stat_monitor_reset();
|
||||
pg_stat_monitor_reset
|
||||
-----------------------
|
||||
|
||||
(1 row)
|
||||
|
||||
DROP EXTENSION pg_stat_monitor;
|
||||
115
regression/expected/pgsm_query_id_1.out
Normal file
115
regression/expected/pgsm_query_id_1.out
Normal file
@@ -0,0 +1,115 @@
|
||||
CREATE EXTENSION pg_stat_monitor;
|
||||
CREATE DATABASE db1;
|
||||
CREATE DATABASE db2;
|
||||
\c db1
|
||||
CREATE TABLE t1 (a int);
|
||||
CREATE TABLE t2 (b int);
|
||||
CREATE FUNCTION add(integer, integer) RETURNS integer
|
||||
AS 'select $1 + $2;'
|
||||
LANGUAGE SQL
|
||||
IMMUTABLE
|
||||
RETURNS NULL ON NULL INPUT;
|
||||
\c db2
|
||||
CREATE TABLE t1 (a int);
|
||||
CREATE TABLE t3 (c int);
|
||||
CREATE FUNCTION add(integer, integer) RETURNS integer
|
||||
AS 'select $1 + $2;'
|
||||
LANGUAGE SQL
|
||||
IMMUTABLE
|
||||
RETURNS NULL ON NULL INPUT;
|
||||
\c contrib_regression
|
||||
SELECT pg_stat_monitor_reset();
|
||||
pg_stat_monitor_reset
|
||||
-----------------------
|
||||
|
||||
(1 row)
|
||||
|
||||
\c db1
|
||||
SELECT * FROM t1;
|
||||
a
|
||||
---
|
||||
(0 rows)
|
||||
|
||||
SELECT *, ADD(1, 2) FROM t1;
|
||||
a | add
|
||||
---+-----
|
||||
(0 rows)
|
||||
|
||||
SELECT * FROM t2;
|
||||
b
|
||||
---
|
||||
(0 rows)
|
||||
|
||||
-- Check that spaces and comments do not generate a different pgsm_query_id
|
||||
SELECT * FROM t2 --WHATEVER;
|
||||
;
|
||||
b
|
||||
---
|
||||
(0 rows)
|
||||
|
||||
SELECT * FROM t2 /* ...
|
||||
...
|
||||
More comments to check for spaces.
|
||||
*/
|
||||
;
|
||||
b
|
||||
---
|
||||
(0 rows)
|
||||
|
||||
\c db2
|
||||
SELECT * FROM t1;
|
||||
a
|
||||
---
|
||||
(0 rows)
|
||||
|
||||
SELECT *, ADD(1, 2) FROM t1;
|
||||
a | add
|
||||
---+-----
|
||||
(0 rows)
|
||||
|
||||
set pg_stat_monitor.pgsm_enable_pgsm_query_id = off;
|
||||
SELECT * FROM t3;
|
||||
c
|
||||
---
|
||||
(0 rows)
|
||||
|
||||
set pg_stat_monitor.pgsm_enable_pgsm_query_id = on;
|
||||
SELECT * FROM t3 where c = 20;
|
||||
c
|
||||
---
|
||||
(0 rows)
|
||||
|
||||
\c contrib_regression
|
||||
SELECT datname, pgsm_query_id, query, calls FROM pg_stat_monitor ORDER BY pgsm_query_id, query, datname;
|
||||
datname | pgsm_query_id | query | calls
|
||||
--------------------+---------------------+-----------------------------------------------------+-------
|
||||
contrib_regression | 689150021118383254 | SELECT pg_stat_monitor_reset() | 1
|
||||
db1 | 1897482803466821995 | SELECT * FROM t2 | 3
|
||||
db1 | 1988437669671417938 | SELECT * FROM t1 | 1
|
||||
db2 | 1988437669671417938 | SELECT * FROM t1 | 1
|
||||
db2 | 6220142855706866455 | set pg_stat_monitor.pgsm_enable_pgsm_query_id = on | 1
|
||||
db2 | 6633979598391393345 | SELECT * FROM t3 where c = 20 | 1
|
||||
db1 | 8140395000078788481 | SELECT *, ADD(1, 2) FROM t1 | 1
|
||||
db2 | 8140395000078788481 | SELECT *, ADD(1, 2) FROM t1 | 1
|
||||
db2 | | SELECT * FROM t3 | 1
|
||||
db2 | | set pg_stat_monitor.pgsm_enable_pgsm_query_id = off | 1
|
||||
(10 rows)
|
||||
|
||||
SELECT pg_stat_monitor_reset();
|
||||
pg_stat_monitor_reset
|
||||
-----------------------
|
||||
|
||||
(1 row)
|
||||
|
||||
\c db1
|
||||
DROP TABLE t1;
|
||||
DROP TABLE t2;
|
||||
DROP FUNCTION ADD;
|
||||
\c db2
|
||||
DROP TABLE t1;
|
||||
DROP TABLE t3;
|
||||
DROP FUNCTION ADD;
|
||||
\c contrib_regression
|
||||
DROP DATABASE db1;
|
||||
DROP DATABASE db2;
|
||||
DROP EXTENSION pg_stat_monitor;
|
||||
@@ -34,6 +34,39 @@ END; $$;
|
||||
SELECT toplevel, calls, query FROM pg_stat_monitor
|
||||
ORDER BY query COLLATE "C", toplevel;
|
||||
|
||||
-- DO block - top-level tracking without utility.
|
||||
SET pg_stat_monitor.pgsm_track = 'top';
|
||||
SET pg_stat_monitor.pgsm_track_utility = FALSE;
|
||||
SELECT pg_stat_monitor_reset();
|
||||
DELETE FROM stats_track_tab;
|
||||
DO $$
|
||||
BEGIN
|
||||
DELETE FROM stats_track_tab;
|
||||
END; $$;
|
||||
DO LANGUAGE plpgsql $$
|
||||
BEGIN
|
||||
-- this is a SELECT
|
||||
PERFORM 'hello world'::TEXT;
|
||||
END; $$;
|
||||
SELECT toplevel, calls, query FROM pg_stat_monitor
|
||||
ORDER BY query COLLATE "C", toplevel;
|
||||
|
||||
-- DO block - all-level tracking without utility.
|
||||
SET pg_stat_monitor.pgsm_track = 'all';
|
||||
SELECT pg_stat_monitor_reset();
|
||||
DELETE FROM stats_track_tab;
|
||||
DO $$
|
||||
BEGIN
|
||||
DELETE FROM stats_track_tab;
|
||||
END; $$;
|
||||
DO LANGUAGE plpgsql $$
|
||||
BEGIN
|
||||
-- this is a SELECT
|
||||
PERFORM 'hello world'::TEXT;
|
||||
END; $$;
|
||||
SELECT toplevel, calls, query FROM pg_stat_monitor
|
||||
ORDER BY query COLLATE "C", toplevel;
|
||||
|
||||
-- PL/pgSQL function - top-level tracking.
|
||||
SET pg_stat_monitor.pgsm_track = 'top';
|
||||
SET pg_stat_monitor.pgsm_track_utility = FALSE;
|
||||
@@ -58,6 +91,15 @@ SELECT PLUS_ONE(10);
|
||||
|
||||
SELECT calls, rows, query FROM pg_stat_monitor ORDER BY query COLLATE "C";
|
||||
|
||||
-- immutable SQL function --- can be executed at plan time
|
||||
CREATE FUNCTION PLUS_THREE(i INTEGER) RETURNS INTEGER AS
|
||||
$$ SELECT i + 3 LIMIT 1 $$ IMMUTABLE LANGUAGE SQL;
|
||||
|
||||
SELECT PLUS_THREE(8);
|
||||
SELECT PLUS_THREE(10);
|
||||
|
||||
SELECT toplevel, calls, rows, query FROM pg_stat_monitor ORDER BY query COLLATE "C";
|
||||
|
||||
-- PL/pgSQL function - all-level tracking.
|
||||
SET pg_stat_monitor.pgsm_track = 'all';
|
||||
SELECT pg_stat_monitor_reset();
|
||||
@@ -65,6 +107,7 @@ SELECT pg_stat_monitor_reset();
|
||||
-- we drop and recreate the functions to avoid any caching funnies
|
||||
DROP FUNCTION PLUS_ONE(INTEGER);
|
||||
DROP FUNCTION PLUS_TWO(INTEGER);
|
||||
DROP FUNCTION PLUS_THREE(INTEGER);
|
||||
|
||||
-- PL/pgSQL function
|
||||
CREATE FUNCTION PLUS_TWO(i INTEGER) RETURNS INTEGER AS $$
|
||||
@@ -86,7 +129,15 @@ SELECT PLUS_ONE(3);
|
||||
SELECT PLUS_ONE(1);
|
||||
|
||||
SELECT calls, rows, query FROM pg_stat_monitor ORDER BY query COLLATE "C";
|
||||
DROP FUNCTION PLUS_ONE(INTEGER);
|
||||
|
||||
-- immutable SQL function --- can be executed at plan time
|
||||
CREATE FUNCTION PLUS_THREE(i INTEGER) RETURNS INTEGER AS
|
||||
$$ SELECT i + 3 LIMIT 1 $$ IMMUTABLE LANGUAGE SQL;
|
||||
|
||||
SELECT PLUS_THREE(8);
|
||||
SELECT PLUS_THREE(10);
|
||||
|
||||
SELECT toplevel, calls, rows, query FROM pg_stat_monitor ORDER BY query COLLATE "C";
|
||||
|
||||
--
|
||||
-- pg_stat_monitor.pgsm_track = none
|
||||
|
||||
Reference in New Issue
Block a user