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--
-- Tests with plan cache
--
-- Setup
CREATE OR REPLACE FUNCTION select_one_func(int) RETURNS VOID AS $$
DECLARE
ret INT;
BEGIN
SELECT $1 INTO ret;
END;
$$ LANGUAGE plpgsql;
CREATE OR REPLACE PROCEDURE select_one_proc(int) AS $$
DECLARE
ret INT;
BEGIN
SELECT $1 INTO ret;
END;
$$ LANGUAGE plpgsql;
-- Prepared statements
SELECT pg_stat_statements_reset() IS NOT NULL AS t;
t
---
t
(1 row)
PREPARE p1 AS SELECT $1 AS a;
SET plan_cache_mode TO force_generic_plan;
EXECUTE p1(1);
a
---
1
(1 row)
SET plan_cache_mode TO force_custom_plan;
EXECUTE p1(1);
a
---
1
(1 row)
SELECT calls, generic_plan_calls, custom_plan_calls, query FROM pg_stat_statements
ORDER BY query COLLATE "C";
calls | generic_plan_calls | custom_plan_calls | query
-------+--------------------+-------------------+----------------------------------------------------
2 | 1 | 1 | PREPARE p1 AS SELECT $1 AS a
1 | 0 | 0 | SELECT pg_stat_statements_reset() IS NOT NULL AS t
2 | 0 | 0 | SET plan_cache_mode TO $1
(3 rows)
DEALLOCATE p1;
-- Extended query protocol
SELECT pg_stat_statements_reset() IS NOT NULL AS t;
t
---
t
(1 row)
SELECT $1 AS a \parse p1
SET plan_cache_mode TO force_generic_plan;
\bind_named p1 1
;
a
---
1
(1 row)
SET plan_cache_mode TO force_custom_plan;
\bind_named p1 1
;
a
---
1
(1 row)
SELECT calls, generic_plan_calls, custom_plan_calls, query FROM pg_stat_statements
ORDER BY query COLLATE "C";
calls | generic_plan_calls | custom_plan_calls | query
-------+--------------------+-------------------+----------------------------------------------------
2 | 1 | 1 | SELECT $1 AS a
1 | 0 | 0 | SELECT pg_stat_statements_reset() IS NOT NULL AS t
2 | 0 | 0 | SET plan_cache_mode TO $1
(3 rows)
\close_prepared p1
-- EXPLAIN [ANALYZE] EXECUTE
SET pg_stat_statements.track = 'all';
SELECT pg_stat_statements_reset() IS NOT NULL AS t;
t
---
t
(1 row)
PREPARE p1 AS SELECT $1;
SET plan_cache_mode TO force_generic_plan;
EXPLAIN (COSTS OFF) EXECUTE p1(1);
QUERY PLAN
------------
Result
(1 row)
EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF, BUFFERS OFF) EXECUTE p1(1);
QUERY PLAN
-----------------------------------
Result (actual rows=1.00 loops=1)
(1 row)
SET plan_cache_mode TO force_custom_plan;
EXPLAIN (COSTS OFF) EXECUTE p1(1);
QUERY PLAN
------------
Result
(1 row)
EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF, BUFFERS OFF) EXECUTE p1(1);
QUERY PLAN
-----------------------------------
Result (actual rows=1.00 loops=1)
(1 row)
SELECT calls, generic_plan_calls, custom_plan_calls, toplevel, query FROM pg_stat_statements
ORDER BY query COLLATE "C";
calls | generic_plan_calls | custom_plan_calls | toplevel | query
-------+--------------------+-------------------+----------+----------------------------------------------------------------------------------
2 | 0 | 0 | t | EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF, BUFFERS OFF) EXECUTE p1(1)
2 | 0 | 0 | t | EXPLAIN (COSTS OFF) EXECUTE p1(1)
4 | 2 | 2 | f | PREPARE p1 AS SELECT $1
1 | 0 | 0 | t | SELECT pg_stat_statements_reset() IS NOT NULL AS t
2 | 0 | 0 | t | SET plan_cache_mode TO $1
(5 rows)
RESET pg_stat_statements.track;
DEALLOCATE p1;
-- Functions/procedures
SET pg_stat_statements.track = 'all';
SELECT pg_stat_statements_reset() IS NOT NULL AS t;
t
---
t
(1 row)
SET plan_cache_mode TO force_generic_plan;
SELECT select_one_func(1);
select_one_func
-----------------
(1 row)
CALL select_one_proc(1);
SET plan_cache_mode TO force_custom_plan;
SELECT select_one_func(1);
select_one_func
-----------------
(1 row)
CALL select_one_proc(1);
SELECT calls, generic_plan_calls, custom_plan_calls, toplevel, query FROM pg_stat_statements
ORDER BY query COLLATE "C";
calls | generic_plan_calls | custom_plan_calls | toplevel | query
-------+--------------------+-------------------+----------+----------------------------------------------------
2 | 0 | 0 | t | CALL select_one_proc($1)
4 | 2 | 2 | f | SELECT $1
1 | 0 | 0 | t | SELECT pg_stat_statements_reset() IS NOT NULL AS t
2 | 0 | 0 | t | SELECT select_one_func($1)
2 | 0 | 0 | t | SET plan_cache_mode TO $1
(5 rows)
--
-- EXPLAIN [ANALYZE] EXECUTE + functions/procedures
--
SET pg_stat_statements.track = 'all';
SELECT pg_stat_statements_reset() IS NOT NULL AS t;
t
---
t
(1 row)
SET plan_cache_mode TO force_generic_plan;
EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF, BUFFERS OFF) SELECT select_one_func(1);
QUERY PLAN
-----------------------------------
Result (actual rows=1.00 loops=1)
(1 row)
EXPLAIN (COSTS OFF) SELECT select_one_func(1);
QUERY PLAN
------------
Result
(1 row)
CALL select_one_proc(1);
SET plan_cache_mode TO force_custom_plan;
EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF, BUFFERS OFF) SELECT select_one_func(1);
QUERY PLAN
-----------------------------------
Result (actual rows=1.00 loops=1)
(1 row)
EXPLAIN (COSTS OFF) SELECT select_one_func(1);
QUERY PLAN
------------
Result
(1 row)
CALL select_one_proc(1);
SELECT calls, generic_plan_calls, custom_plan_calls, toplevel, query FROM pg_stat_statements
ORDER BY query COLLATE "C", toplevel;
calls | generic_plan_calls | custom_plan_calls | toplevel | query
-------+--------------------+-------------------+----------+------------------------------------------------------------------------------------------------
2 | 0 | 0 | t | CALL select_one_proc($1)
2 | 0 | 0 | t | EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF, BUFFERS OFF) SELECT select_one_func($1)
4 | 0 | 0 | f | EXPLAIN (ANALYZE, COSTS OFF, SUMMARY OFF, TIMING OFF, BUFFERS OFF) SELECT select_one_func($1);
2 | 0 | 0 | t | EXPLAIN (COSTS OFF) SELECT select_one_func($1)
4 | 2 | 2 | f | SELECT $1
1 | 0 | 0 | t | SELECT pg_stat_statements_reset() IS NOT NULL AS t
2 | 0 | 0 | t | SET plan_cache_mode TO $1
(7 rows)
RESET pg_stat_statements.track;
--
-- Cleanup
--
DROP FUNCTION select_one_func(int);
DROP PROCEDURE select_one_proc(int);
|
