contrib/pg_stat_statements/expected/dml.out - master - githubmirror/postgres

contrib/pg_stat_statements/expected/dml.out
173 строки7 KB
Álvaro Herrera
Remove the query_id_squash_values GUC
27 мар 2025, 15:33
27 мар 2025, 15:339fbd53d
--
-- DMLs on test table
--
SET pg_stat_statements.track_utility = FALSE;
CREATE TEMP TABLE pgss_dml_tab (a int, b char(20));
INSERT INTO pgss_dml_tab VALUES(generate_series(1, 10), 'aaa');
UPDATE pgss_dml_tab SET b = 'bbb' WHERE a > 7;
DELETE FROM pgss_dml_tab WHERE a > 9;
-- explicit transaction
BEGIN;
UPDATE pgss_dml_tab SET b = '111' WHERE a = 1 ;
COMMIT;
BEGIN \;
UPDATE pgss_dml_tab SET b = '222' WHERE a = 2 \;
COMMIT ;
UPDATE pgss_dml_tab SET b = '333' WHERE a = 3 \;
UPDATE pgss_dml_tab SET b = '444' WHERE a = 4 ;
BEGIN \;
UPDATE pgss_dml_tab SET b = '555' WHERE a = 5 \;
UPDATE pgss_dml_tab SET b = '666' WHERE a = 6 \;
COMMIT ;
-- many INSERT values
INSERT INTO pgss_dml_tab (a, b) VALUES (1, 'a'), (2, 'b'), (3, 'c');
-- SELECT with constants
SELECT * FROM pgss_dml_tab WHERE a > 5 ORDER BY a ;
 a |          b           
---+----------------------
 6 | 666                 
 7 | aaa                 
 8 | bbb                 
 9 | bbb                 
(4 rows)

SELECT *
  FROM pgss_dml_tab
  WHERE a > 9
  ORDER BY a ;
 a | b 
---+---
(0 rows)

-- these two need to be done on a different table
-- SELECT without constants
SELECT * FROM pgss_dml_tab ORDER BY a;
 a |          b           
---+----------------------
 1 | a                   
 1 | 111                 
 2 | b                   
 2 | 222                 
 3 | c                   
 3 | 333                 
 4 | 444                 
 5 | 555                 
 6 | 666                 
 7 | aaa                 
 8 | bbb                 
 9 | bbb                 
(12 rows)

-- SELECT with IN clause
SELECT * FROM pgss_dml_tab WHERE a IN (1, 2, 3, 4, 5);
 a |          b           
---+----------------------
 1 | 111                 
 2 | 222                 
 3 | 333                 
 4 | 444                 
 5 | 555                 
 1 | a                   
 2 | b                   
 3 | c                   
(8 rows)

SELECT calls, rows, query FROM pg_stat_statements ORDER BY query COLLATE "C";
 calls | rows |                                query                                
-------+------+---------------------------------------------------------------------
     1 |    1 | DELETE FROM pgss_dml_tab WHERE a > $1
     1 |    3 | INSERT INTO pgss_dml_tab (a, b) VALUES ($1, $2), ($3, $4), ($5, $6)
     1 |   10 | INSERT INTO pgss_dml_tab VALUES(generate_series($1, $2), $3)
     1 |   12 | SELECT * FROM pgss_dml_tab ORDER BY a
     2 |    4 | SELECT * FROM pgss_dml_tab WHERE a > $1 ORDER BY a
     1 |    8 | SELECT * FROM pgss_dml_tab WHERE a IN ($1 /*, ... */)
     1 |    1 | SELECT pg_stat_statements_reset() IS NOT NULL AS t
     1 |    0 | SET pg_stat_statements.track_utility = $1
     6 |    6 | UPDATE pgss_dml_tab SET b = $1 WHERE a = $2
     1 |    3 | UPDATE pgss_dml_tab SET b = $1 WHERE a > $2
(10 rows)

SELECT pg_stat_statements_reset() IS NOT NULL AS t;
 t 
---
 t
(1 row)

-- MERGE
MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a AND st.a >= 4)
 WHEN MATCHED THEN UPDATE SET b = st.b || st.a::text;
MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a AND st.a >= 4)
 WHEN MATCHED THEN UPDATE SET b = pgss_dml_tab.b || st.a::text;
MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a AND st.a >= 4)
 WHEN MATCHED AND length(st.b) > 1 THEN UPDATE SET b = pgss_dml_tab.b || st.a::text;
MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a)
 WHEN NOT MATCHED THEN INSERT (a, b) VALUES (0, NULL);
MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a)
 WHEN NOT MATCHED THEN INSERT VALUES (0, NULL);	-- same as above
MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a)
 WHEN NOT MATCHED THEN INSERT (b, a) VALUES (NULL, 0);
MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a)
 WHEN NOT MATCHED THEN INSERT (a) VALUES (0);
MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a AND st.a >= 4)
 WHEN MATCHED THEN DELETE;
MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a AND st.a >= 4)
 WHEN MATCHED THEN DO NOTHING;
MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a AND st.a >= 4)
 WHEN NOT MATCHED THEN DO NOTHING;
DROP TABLE pgss_dml_tab;
SELECT calls, rows, query FROM pg_stat_statements ORDER BY query COLLATE "C";
 calls | rows |                                          query                                          
-------+------+-----------------------------------------------------------------------------------------
     1 |    6 | MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a AND st.a >= $1)+
       |      |  WHEN MATCHED AND length(st.b) > $2 THEN UPDATE SET b = pgss_dml_tab.b || st.a::text
     1 |    6 | MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a AND st.a >= $1)+
       |      |  WHEN MATCHED THEN DELETE
     1 |    0 | MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a AND st.a >= $1)+
       |      |  WHEN MATCHED THEN DO NOTHING
     1 |    6 | MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a AND st.a >= $1)+
       |      |  WHEN MATCHED THEN UPDATE SET b = pgss_dml_tab.b || st.a::text
     1 |    6 | MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a AND st.a >= $1)+
       |      |  WHEN MATCHED THEN UPDATE SET b = st.b || st.a::text
     1 |    0 | MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a AND st.a >= $1)+
       |      |  WHEN NOT MATCHED THEN DO NOTHING
     1 |    0 | MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a)               +
       |      |  WHEN NOT MATCHED THEN INSERT (a) VALUES ($1)
     2 |    0 | MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a)               +
       |      |  WHEN NOT MATCHED THEN INSERT (a, b) VALUES ($1, $2)
     1 |    0 | MERGE INTO pgss_dml_tab USING pgss_dml_tab st ON (st.a = pgss_dml_tab.a)               +
       |      |  WHEN NOT MATCHED THEN INSERT (b, a) VALUES ($1, $2)
     1 |    1 | SELECT pg_stat_statements_reset() IS NOT NULL AS t
(10 rows)

-- check that [temp] table relation extensions are tracked as writes
CREATE TABLE pgss_extend_tab (a int, b text);
CREATE TEMP TABLE pgss_extend_temp_tab (a int, b text);
SELECT pg_stat_statements_reset() IS NOT NULL AS t;
 t 
---
 t
(1 row)

INSERT INTO pgss_extend_tab (a, b) SELECT generate_series(1, 1000), 'something';
INSERT INTO pgss_extend_temp_tab (a, b) SELECT generate_series(1, 1000), 'something';
WITH sizes AS (
  SELECT
    pg_relation_size('pgss_extend_tab') / current_setting('block_size')::int8 AS rel_size,
    pg_relation_size('pgss_extend_temp_tab') / current_setting('block_size')::int8 AS temp_rel_size
)
SELECT
    SUM(local_blks_written) >= (SELECT temp_rel_size FROM sizes) AS temp_written_ok,
    SUM(local_blks_dirtied) >= (SELECT temp_rel_size FROM sizes) AS temp_dirtied_ok,
    SUM(shared_blks_written) >= (SELECT rel_size FROM sizes) AS written_ok,
    SUM(shared_blks_dirtied) >= (SELECT rel_size FROM sizes) AS dirtied_ok
FROM pg_stat_statements;
 temp_written_ok | temp_dirtied_ok | written_ok | dirtied_ok 
-----------------+-----------------+------------+------------
 t               | t               | t          | t
(1 row)

SELECT pg_stat_statements_reset() IS NOT NULL AS t;
 t 
---
 t
(1 row)