--
-- Information related to planning
--
-- These tests require track_planning to be enabled.
SET pg_stat_statements.track_planning = TRUE;
SELECT pg_stat_statements_reset() IS NOT NULL AS t;
 t 
---
 t
(1 row)

--
-- [re]plan counting
--
CREATE TABLE stats_plan_test ();
PREPARE prep1 AS SELECT COUNT(*) FROM stats_plan_test;
EXECUTE prep1;
 count 
-------
     0
(1 row)

EXECUTE prep1;
 count 
-------
     0
(1 row)

EXECUTE prep1;
 count 
-------
     0
(1 row)

ALTER TABLE stats_plan_test ADD COLUMN x int;
EXECUTE prep1;
 count 
-------
     0
(1 row)

SELECT 42;
 ?column? 
----------
       42
(1 row)

SELECT 42;
 ?column? 
----------
       42
(1 row)

SELECT 42;
 ?column? 
----------
       42
(1 row)

SELECT plans, calls, rows, query FROM pg_stat_statements
  WHERE query NOT LIKE 'PREPARE%' ORDER BY query COLLATE "C";
 plans | calls | rows |                          query                           
-------+-------+------+----------------------------------------------------------
     0 |     1 |    0 | ALTER TABLE stats_plan_test ADD COLUMN x int
     0 |     1 |    0 | CREATE TABLE stats_plan_test ()
     3 |     3 |    3 | SELECT $1
     0 |     1 |    1 | SELECT pg_stat_statements_reset() IS NOT NULL AS t
     1 |     0 |    0 | SELECT plans, calls, rows, query FROM pg_stat_statements+
       |       |      |   WHERE query NOT LIKE $1 ORDER BY query COLLATE "C"
(5 rows)

-- for the prepared statement we expect at least one replan, but cache
-- invalidations could force more
SELECT plans >= 2 AND plans <= calls AS plans_ok, calls, rows, query FROM pg_stat_statements
  WHERE query LIKE 'PREPARE%' ORDER BY query COLLATE "C";
 plans_ok | calls | rows |                         query                         
----------+-------+------+-------------------------------------------------------
 t        |     4 |    4 | PREPARE prep1 AS SELECT COUNT(*) FROM stats_plan_test
(1 row)

-- Cleanup
DROP TABLE stats_plan_test;
SELECT pg_stat_statements_reset() IS NOT NULL AS t;
 t 
---
 t
(1 row)