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https://git.postgresql.org/git/postgresql.git
synced 2024-08-24 21:37:19 +02:00
Previously, psql printed only the last result if a command string
returned multiple result sets. Now it prints all of them. The
previous behavior can be obtained by setting the psql variable
SHOW_ALL_RESULTS to off.
This is a significantly enhanced version of
3a51306722
(that was later reverted).
There is also much more test coverage for various psql features now.
Author: Fabien COELHO <coelho@cri.ensmp.fr>
Reviewed-by: Peter Eisentraut <peter.eisentraut@enterprisedb.com>
Reviewed-by: "Iwata, Aya" <iwata.aya@jp.fujitsu.com> (earlier version)
Reviewed-by: Daniel Verite <daniel@manitou-mail.org> (earlier version)
Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com> (earlier version)
Reviewed-by: vignesh C <vignesh21@gmail.com> (earlier version)
Discussion: https://www.postgresql.org/message-id/flat/alpine.DEB.2.21.1904132231510.8961@lancre
1106 lines
36 KiB
Plaintext
1106 lines
36 KiB
Plaintext
CREATE EXTENSION pg_stat_statements;
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--
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-- simple and compound statements
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--
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SET pg_stat_statements.track_utility = FALSE;
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SET pg_stat_statements.track_planning = TRUE;
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SELECT pg_stat_statements_reset();
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pg_stat_statements_reset
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--------------------------
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(1 row)
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SELECT 1 AS "int";
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int
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-----
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1
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(1 row)
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SELECT 'hello'
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-- multiline
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AS "text";
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text
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-------
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hello
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(1 row)
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SELECT 'world' AS "text";
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text
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-------
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world
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(1 row)
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-- transaction
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BEGIN;
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SELECT 1 AS "int";
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int
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-----
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1
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(1 row)
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SELECT 'hello' AS "text";
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text
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-------
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hello
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(1 row)
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COMMIT;
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-- compound transaction
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BEGIN \;
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SELECT 2.0 AS "float" \;
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SELECT 'world' AS "text" \;
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COMMIT;
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float
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-------
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2.0
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(1 row)
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text
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-------
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world
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(1 row)
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-- compound with empty statements and spurious leading spacing
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\;\; SELECT 3 + 3 \;\;\; SELECT ' ' || ' !' \;\; SELECT 1 + 4 \;;
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?column?
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----------
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6
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(1 row)
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?column?
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----------
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!
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(1 row)
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?column?
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----------
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5
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(1 row)
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-- non ;-terminated statements
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SELECT 1 + 1 + 1 AS "add" \gset
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SELECT :add + 1 + 1 AS "add" \;
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SELECT :add + 1 + 1 AS "add" \gset
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add
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-----
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5
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(1 row)
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-- set operator
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SELECT 1 AS i UNION SELECT 2 ORDER BY i;
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i
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---
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1
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2
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(2 rows)
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-- ? operator
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select '{"a":1, "b":2}'::jsonb ? 'b';
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?column?
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----------
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t
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(1 row)
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-- cte
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WITH t(f) AS (
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VALUES (1.0), (2.0)
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)
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SELECT f FROM t ORDER BY f;
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f
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-----
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1.0
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2.0
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(2 rows)
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-- prepared statement with parameter
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PREPARE pgss_test (int) AS SELECT $1, 'test' LIMIT 1;
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EXECUTE pgss_test(1);
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?column? | ?column?
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----------+----------
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1 | test
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(1 row)
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DEALLOCATE pgss_test;
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SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C";
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query | calls | rows
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------------------------------------------------------------------------------+-------+------
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PREPARE pgss_test (int) AS SELECT $1, $2 LIMIT $3 | 1 | 1
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SELECT $1 +| 4 | 4
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-- multiline +| |
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AS "text" | |
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SELECT $1 + $2 | 2 | 2
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SELECT $1 + $2 + $3 AS "add" | 3 | 3
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SELECT $1 AS "float" | 1 | 1
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SELECT $1 AS "int" | 2 | 2
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SELECT $1 AS i UNION SELECT $2 ORDER BY i | 1 | 2
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SELECT $1 || $2 | 1 | 1
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SELECT pg_stat_statements_reset() | 1 | 1
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SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C" | 0 | 0
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WITH t(f) AS ( +| 1 | 2
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VALUES ($1), ($2) +| |
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) +| |
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SELECT f FROM t ORDER BY f | |
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select $1::jsonb ? $2 | 1 | 1
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(12 rows)
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--
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-- CRUD: INSERT SELECT UPDATE DELETE on test table
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--
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SELECT pg_stat_statements_reset();
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pg_stat_statements_reset
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--------------------------
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(1 row)
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-- utility "create table" should not be shown
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CREATE TEMP TABLE test (a int, b char(20));
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INSERT INTO test VALUES(generate_series(1, 10), 'aaa');
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UPDATE test SET b = 'bbb' WHERE a > 7;
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DELETE FROM test WHERE a > 9;
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-- explicit transaction
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BEGIN;
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UPDATE test SET b = '111' WHERE a = 1 ;
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COMMIT;
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BEGIN \;
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UPDATE test SET b = '222' WHERE a = 2 \;
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COMMIT ;
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UPDATE test SET b = '333' WHERE a = 3 \;
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UPDATE test SET b = '444' WHERE a = 4 ;
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BEGIN \;
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UPDATE test SET b = '555' WHERE a = 5 \;
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UPDATE test SET b = '666' WHERE a = 6 \;
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COMMIT ;
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-- many INSERT values
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INSERT INTO test (a, b) VALUES (1, 'a'), (2, 'b'), (3, 'c');
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-- SELECT with constants
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SELECT * FROM test WHERE a > 5 ORDER BY a ;
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a | b
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---+----------------------
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6 | 666
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7 | aaa
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8 | bbb
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9 | bbb
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(4 rows)
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SELECT *
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FROM test
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WHERE a > 9
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ORDER BY a ;
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a | b
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---+---
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(0 rows)
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-- SELECT without constants
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SELECT * FROM test ORDER BY a;
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a | b
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---+----------------------
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1 | a
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1 | 111
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2 | b
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2 | 222
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3 | c
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3 | 333
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4 | 444
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5 | 555
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6 | 666
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7 | aaa
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8 | bbb
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9 | bbb
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(12 rows)
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-- SELECT with IN clause
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SELECT * FROM test WHERE a IN (1, 2, 3, 4, 5);
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a | b
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---+----------------------
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1 | 111
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2 | 222
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3 | 333
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4 | 444
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5 | 555
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1 | a
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2 | b
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3 | c
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(8 rows)
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SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C";
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query | calls | rows
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------------------------------------------------------------------------------+-------+------
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DELETE FROM test WHERE a > $1 | 1 | 1
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INSERT INTO test (a, b) VALUES ($1, $2), ($3, $4), ($5, $6) | 1 | 3
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INSERT INTO test VALUES(generate_series($1, $2), $3) | 1 | 10
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SELECT * FROM test ORDER BY a | 1 | 12
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SELECT * FROM test WHERE a > $1 ORDER BY a | 2 | 4
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SELECT * FROM test WHERE a IN ($1, $2, $3, $4, $5) | 1 | 8
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SELECT pg_stat_statements_reset() | 1 | 1
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SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C" | 0 | 0
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UPDATE test SET b = $1 WHERE a = $2 | 6 | 6
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UPDATE test SET b = $1 WHERE a > $2 | 1 | 3
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(10 rows)
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--
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-- INSERT, UPDATE, DELETE on test table to validate WAL generation metrics
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--
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SELECT pg_stat_statements_reset();
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pg_stat_statements_reset
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--------------------------
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(1 row)
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-- utility "create table" should not be shown
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CREATE TABLE pgss_test (a int, b char(20));
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INSERT INTO pgss_test VALUES(generate_series(1, 10), 'aaa');
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UPDATE pgss_test SET b = 'bbb' WHERE a > 7;
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DELETE FROM pgss_test WHERE a > 9;
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-- DROP test table
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SET pg_stat_statements.track_utility = TRUE;
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DROP TABLE pgss_test;
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SET pg_stat_statements.track_utility = FALSE;
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-- Check WAL is generated for the above statements
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SELECT query, calls, rows,
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wal_bytes > 0 as wal_bytes_generated,
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wal_records > 0 as wal_records_generated,
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wal_records = rows as wal_records_as_rows
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FROM pg_stat_statements ORDER BY query COLLATE "C";
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query | calls | rows | wal_bytes_generated | wal_records_generated | wal_records_as_rows
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-----------------------------------------------------------+-------+------+---------------------+-----------------------+---------------------
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DELETE FROM pgss_test WHERE a > $1 | 1 | 1 | t | t | t
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DROP TABLE pgss_test | 1 | 0 | t | t | f
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INSERT INTO pgss_test VALUES(generate_series($1, $2), $3) | 1 | 10 | t | t | t
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SELECT pg_stat_statements_reset() | 1 | 1 | f | f | f
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SELECT query, calls, rows, +| 0 | 0 | f | f | t
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wal_bytes > $1 as wal_bytes_generated, +| | | | |
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wal_records > $2 as wal_records_generated, +| | | | |
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wal_records = rows as wal_records_as_rows +| | | | |
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FROM pg_stat_statements ORDER BY query COLLATE "C" | | | | |
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SET pg_stat_statements.track_utility = FALSE | 1 | 0 | f | f | t
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UPDATE pgss_test SET b = $1 WHERE a > $2 | 1 | 3 | t | t | t
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(7 rows)
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--
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-- pg_stat_statements.track = none
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--
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SET pg_stat_statements.track = 'none';
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SELECT pg_stat_statements_reset();
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pg_stat_statements_reset
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--------------------------
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(1 row)
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SELECT 1 AS "one";
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one
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-----
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1
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(1 row)
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SELECT 1 + 1 AS "two";
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two
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-----
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2
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(1 row)
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SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C";
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query | calls | rows
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-------+-------+------
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(0 rows)
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--
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-- pg_stat_statements.track = top
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--
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SET pg_stat_statements.track = 'top';
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SELECT pg_stat_statements_reset();
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pg_stat_statements_reset
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--------------------------
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(1 row)
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DO LANGUAGE plpgsql $$
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BEGIN
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-- this is a SELECT
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PERFORM 'hello world'::TEXT;
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END;
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$$;
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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(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 query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C";
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query | calls | rows
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------------------------------------------------------------------------------+-------+------
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SELECT $1::TEXT | 1 | 1
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SELECT PLUS_ONE($1) | 2 | 2
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SELECT PLUS_TWO($1) | 2 | 2
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SELECT pg_stat_statements_reset() | 1 | 1
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SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C" | 0 | 0
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(5 rows)
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--
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-- pg_stat_statements.track = all
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--
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SET pg_stat_statements.track = 'all';
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SELECT pg_stat_statements_reset();
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pg_stat_statements_reset
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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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-- 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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SELECT PLUS_TWO(2);
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plus_two
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----------
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4
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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(3);
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plus_one
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----------
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4
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(1 row)
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SELECT PLUS_ONE(1);
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plus_one
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----------
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2
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(1 row)
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SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C";
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query | calls | rows
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------------------------------------------------------------------------------+-------+------
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SELECT (i + $2 + $3)::INTEGER | 2 | 2
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SELECT (i + $2)::INTEGER LIMIT $3 | 2 | 2
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SELECT PLUS_ONE($1) | 2 | 2
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SELECT PLUS_TWO($1) | 2 | 2
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SELECT pg_stat_statements_reset() | 1 | 1
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SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C" | 0 | 0
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(6 rows)
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--
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-- queries with locking clauses
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--
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CREATE TABLE pgss_a (id integer PRIMARY KEY);
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CREATE TABLE pgss_b (id integer PRIMARY KEY, a_id integer REFERENCES pgss_a);
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SELECT pg_stat_statements_reset();
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pg_stat_statements_reset
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--------------------------
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(1 row)
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-- control query
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SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id;
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id | id | a_id
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----+----+------
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(0 rows)
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-- test range tables
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SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR UPDATE;
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id | id | a_id
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----+----+------
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(0 rows)
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SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR UPDATE OF pgss_a;
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id | id | a_id
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----+----+------
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(0 rows)
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SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR UPDATE OF pgss_b;
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id | id | a_id
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----+----+------
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(0 rows)
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SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR UPDATE OF pgss_a, pgss_b; -- matches plain "FOR UPDATE"
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id | id | a_id
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----+----+------
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(0 rows)
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SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR UPDATE OF pgss_b, pgss_a;
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id | id | a_id
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----+----+------
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(0 rows)
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-- test strengths
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SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR NO KEY UPDATE;
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id | id | a_id
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----+----+------
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(0 rows)
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SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR SHARE;
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id | id | a_id
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----+----+------
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(0 rows)
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SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR KEY SHARE;
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id | id | a_id
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----+----+------
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(0 rows)
|
|
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-- test wait policies
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SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR UPDATE NOWAIT;
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id | id | a_id
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----+----+------
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(0 rows)
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|
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SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR UPDATE SKIP LOCKED;
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id | id | a_id
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----+----+------
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(0 rows)
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|
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SELECT calls, query FROM pg_stat_statements ORDER BY query COLLATE "C";
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calls | query
|
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-------+------------------------------------------------------------------------------------------
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1 | SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id
|
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1 | SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR KEY SHARE
|
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1 | SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR NO KEY UPDATE
|
|
1 | SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR SHARE
|
|
2 | SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR UPDATE
|
|
1 | SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR UPDATE NOWAIT
|
|
1 | SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR UPDATE OF pgss_a
|
|
1 | SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR UPDATE OF pgss_b
|
|
1 | SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR UPDATE OF pgss_b, pgss_a
|
|
1 | SELECT * FROM pgss_a JOIN pgss_b ON pgss_b.a_id = pgss_a.id FOR UPDATE SKIP LOCKED
|
|
0 | SELECT calls, query FROM pg_stat_statements ORDER BY query COLLATE "C"
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1 | SELECT pg_stat_statements_reset()
|
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(12 rows)
|
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|
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DROP TABLE pgss_a, pgss_b CASCADE;
|
|
--
|
|
-- utility commands
|
|
--
|
|
SET pg_stat_statements.track_utility = TRUE;
|
|
SELECT pg_stat_statements_reset();
|
|
pg_stat_statements_reset
|
|
--------------------------
|
|
|
|
(1 row)
|
|
|
|
SELECT 1;
|
|
?column?
|
|
----------
|
|
1
|
|
(1 row)
|
|
|
|
CREATE INDEX test_b ON test(b);
|
|
DROP TABLE test \;
|
|
DROP TABLE IF EXISTS test \;
|
|
DROP FUNCTION PLUS_ONE(INTEGER);
|
|
NOTICE: table "test" does not exist, skipping
|
|
DROP TABLE IF EXISTS test \;
|
|
DROP TABLE IF EXISTS test \;
|
|
DROP FUNCTION IF EXISTS PLUS_ONE(INTEGER);
|
|
NOTICE: table "test" does not exist, skipping
|
|
NOTICE: table "test" does not exist, skipping
|
|
NOTICE: function plus_one(pg_catalog.int4) does not exist, skipping
|
|
DROP FUNCTION PLUS_TWO(INTEGER);
|
|
SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C";
|
|
query | calls | rows
|
|
------------------------------------------------------------------------------+-------+------
|
|
CREATE INDEX test_b ON test(b) | 1 | 0
|
|
DROP FUNCTION IF EXISTS PLUS_ONE(INTEGER) | 1 | 0
|
|
DROP FUNCTION PLUS_ONE(INTEGER) | 1 | 0
|
|
DROP FUNCTION PLUS_TWO(INTEGER) | 1 | 0
|
|
DROP TABLE IF EXISTS test | 3 | 0
|
|
DROP TABLE test | 1 | 0
|
|
SELECT $1 | 1 | 1
|
|
SELECT pg_stat_statements_reset() | 1 | 1
|
|
SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C" | 0 | 0
|
|
(9 rows)
|
|
|
|
--
|
|
-- Track the total number of rows retrieved or affected by the utility
|
|
-- commands of COPY, FETCH, CREATE TABLE AS, CREATE MATERIALIZED VIEW,
|
|
-- REFRESH MATERIALIZED VIEW and SELECT INTO
|
|
--
|
|
SELECT pg_stat_statements_reset();
|
|
pg_stat_statements_reset
|
|
--------------------------
|
|
|
|
(1 row)
|
|
|
|
CREATE TABLE pgss_ctas AS SELECT a, 'ctas' b FROM generate_series(1, 10) a;
|
|
SELECT generate_series(1, 10) c INTO pgss_select_into;
|
|
COPY pgss_ctas (a, b) FROM STDIN;
|
|
CREATE MATERIALIZED VIEW pgss_matv AS SELECT * FROM pgss_ctas;
|
|
REFRESH MATERIALIZED VIEW pgss_matv;
|
|
BEGIN;
|
|
DECLARE pgss_cursor CURSOR FOR SELECT * FROM pgss_matv;
|
|
FETCH NEXT pgss_cursor;
|
|
a | b
|
|
---+------
|
|
1 | ctas
|
|
(1 row)
|
|
|
|
FETCH FORWARD 5 pgss_cursor;
|
|
a | b
|
|
---+------
|
|
2 | ctas
|
|
3 | ctas
|
|
4 | ctas
|
|
5 | ctas
|
|
6 | ctas
|
|
(5 rows)
|
|
|
|
FETCH FORWARD ALL pgss_cursor;
|
|
a | b
|
|
----+------
|
|
7 | ctas
|
|
8 | ctas
|
|
9 | ctas
|
|
10 | ctas
|
|
11 | copy
|
|
12 | copy
|
|
13 | copy
|
|
(7 rows)
|
|
|
|
COMMIT;
|
|
SELECT query, plans, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C";
|
|
query | plans | calls | rows
|
|
-------------------------------------------------------------------------------------+-------+-------+------
|
|
BEGIN | 0 | 1 | 0
|
|
COMMIT | 0 | 1 | 0
|
|
COPY pgss_ctas (a, b) FROM STDIN | 0 | 1 | 3
|
|
CREATE MATERIALIZED VIEW pgss_matv AS SELECT * FROM pgss_ctas | 0 | 1 | 13
|
|
CREATE TABLE pgss_ctas AS SELECT a, 'ctas' b FROM generate_series(1, 10) a | 0 | 1 | 10
|
|
DECLARE pgss_cursor CURSOR FOR SELECT * FROM pgss_matv | 0 | 1 | 0
|
|
FETCH FORWARD 5 pgss_cursor | 0 | 1 | 5
|
|
FETCH FORWARD ALL pgss_cursor | 0 | 1 | 7
|
|
FETCH NEXT pgss_cursor | 0 | 1 | 1
|
|
REFRESH MATERIALIZED VIEW pgss_matv | 0 | 1 | 13
|
|
SELECT generate_series(1, 10) c INTO pgss_select_into | 0 | 1 | 10
|
|
SELECT pg_stat_statements_reset() | 0 | 1 | 1
|
|
SELECT query, plans, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C" | 1 | 0 | 0
|
|
(13 rows)
|
|
|
|
--
|
|
-- Track user activity and reset them
|
|
--
|
|
SELECT pg_stat_statements_reset();
|
|
pg_stat_statements_reset
|
|
--------------------------
|
|
|
|
(1 row)
|
|
|
|
CREATE ROLE regress_stats_user1;
|
|
CREATE ROLE regress_stats_user2;
|
|
SET ROLE regress_stats_user1;
|
|
SELECT 1 AS "ONE";
|
|
ONE
|
|
-----
|
|
1
|
|
(1 row)
|
|
|
|
SELECT 1+1 AS "TWO";
|
|
TWO
|
|
-----
|
|
2
|
|
(1 row)
|
|
|
|
RESET ROLE;
|
|
SET ROLE regress_stats_user2;
|
|
SELECT 1 AS "ONE";
|
|
ONE
|
|
-----
|
|
1
|
|
(1 row)
|
|
|
|
SELECT 1+1 AS "TWO";
|
|
TWO
|
|
-----
|
|
2
|
|
(1 row)
|
|
|
|
RESET ROLE;
|
|
SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C";
|
|
query | calls | rows
|
|
------------------------------------------------------------------------------+-------+------
|
|
CREATE ROLE regress_stats_user1 | 1 | 0
|
|
CREATE ROLE regress_stats_user2 | 1 | 0
|
|
RESET ROLE | 2 | 0
|
|
SELECT $1 AS "ONE" | 1 | 1
|
|
SELECT $1 AS "ONE" | 1 | 1
|
|
SELECT $1+$2 AS "TWO" | 1 | 1
|
|
SELECT $1+$2 AS "TWO" | 1 | 1
|
|
SELECT pg_stat_statements_reset() | 1 | 1
|
|
SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C" | 0 | 0
|
|
SET ROLE regress_stats_user1 | 1 | 0
|
|
SET ROLE regress_stats_user2 | 1 | 0
|
|
(11 rows)
|
|
|
|
--
|
|
-- Don't reset anything if any of the parameter is NULL
|
|
--
|
|
SELECT pg_stat_statements_reset(NULL);
|
|
pg_stat_statements_reset
|
|
--------------------------
|
|
|
|
(1 row)
|
|
|
|
SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C";
|
|
query | calls | rows
|
|
------------------------------------------------------------------------------+-------+------
|
|
CREATE ROLE regress_stats_user1 | 1 | 0
|
|
CREATE ROLE regress_stats_user2 | 1 | 0
|
|
RESET ROLE | 2 | 0
|
|
SELECT $1 AS "ONE" | 1 | 1
|
|
SELECT $1 AS "ONE" | 1 | 1
|
|
SELECT $1+$2 AS "TWO" | 1 | 1
|
|
SELECT $1+$2 AS "TWO" | 1 | 1
|
|
SELECT pg_stat_statements_reset($1) | 1 | 1
|
|
SELECT pg_stat_statements_reset() | 1 | 1
|
|
SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C" | 1 | 11
|
|
SET ROLE regress_stats_user1 | 1 | 0
|
|
SET ROLE regress_stats_user2 | 1 | 0
|
|
(12 rows)
|
|
|
|
--
|
|
-- remove query ('SELECT $1+$2 AS "TWO"') executed by regress_stats_user2
|
|
-- in the current_database
|
|
--
|
|
SELECT pg_stat_statements_reset(
|
|
(SELECT r.oid FROM pg_roles AS r WHERE r.rolname = 'regress_stats_user2'),
|
|
(SELECT d.oid FROM pg_database As d where datname = current_database()),
|
|
(SELECT s.queryid FROM pg_stat_statements AS s
|
|
WHERE s.query = 'SELECT $1+$2 AS "TWO"' LIMIT 1));
|
|
pg_stat_statements_reset
|
|
--------------------------
|
|
|
|
(1 row)
|
|
|
|
SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C";
|
|
query | calls | rows
|
|
----------------------------------------------------------------------------------+-------+------
|
|
CREATE ROLE regress_stats_user1 | 1 | 0
|
|
CREATE ROLE regress_stats_user2 | 1 | 0
|
|
RESET ROLE | 2 | 0
|
|
SELECT $1 AS "ONE" | 1 | 1
|
|
SELECT $1 AS "ONE" | 1 | 1
|
|
SELECT $1+$2 AS "TWO" | 1 | 1
|
|
SELECT pg_stat_statements_reset( +| 1 | 1
|
|
(SELECT r.oid FROM pg_roles AS r WHERE r.rolname = $1), +| |
|
|
(SELECT d.oid FROM pg_database As d where datname = current_database()),+| |
|
|
(SELECT s.queryid FROM pg_stat_statements AS s +| |
|
|
WHERE s.query = $2 LIMIT $3)) | |
|
|
SELECT pg_stat_statements_reset($1) | 1 | 1
|
|
SELECT pg_stat_statements_reset() | 1 | 1
|
|
SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C" | 2 | 23
|
|
SET ROLE regress_stats_user1 | 1 | 0
|
|
SET ROLE regress_stats_user2 | 1 | 0
|
|
(12 rows)
|
|
|
|
--
|
|
-- remove query ('SELECT $1 AS "ONE"') executed by two users
|
|
--
|
|
SELECT pg_stat_statements_reset(0,0,s.queryid)
|
|
FROM pg_stat_statements AS s WHERE s.query = 'SELECT $1 AS "ONE"';
|
|
pg_stat_statements_reset
|
|
--------------------------
|
|
|
|
|
|
(2 rows)
|
|
|
|
SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C";
|
|
query | calls | rows
|
|
----------------------------------------------------------------------------------+-------+------
|
|
CREATE ROLE regress_stats_user1 | 1 | 0
|
|
CREATE ROLE regress_stats_user2 | 1 | 0
|
|
RESET ROLE | 2 | 0
|
|
SELECT $1+$2 AS "TWO" | 1 | 1
|
|
SELECT pg_stat_statements_reset( +| 1 | 1
|
|
(SELECT r.oid FROM pg_roles AS r WHERE r.rolname = $1), +| |
|
|
(SELECT d.oid FROM pg_database As d where datname = current_database()),+| |
|
|
(SELECT s.queryid FROM pg_stat_statements AS s +| |
|
|
WHERE s.query = $2 LIMIT $3)) | |
|
|
SELECT pg_stat_statements_reset($1) | 1 | 1
|
|
SELECT pg_stat_statements_reset($1,$2,s.queryid) +| 1 | 2
|
|
FROM pg_stat_statements AS s WHERE s.query = $3 | |
|
|
SELECT pg_stat_statements_reset() | 1 | 1
|
|
SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C" | 3 | 35
|
|
SET ROLE regress_stats_user1 | 1 | 0
|
|
SET ROLE regress_stats_user2 | 1 | 0
|
|
(11 rows)
|
|
|
|
--
|
|
-- remove query of a user (regress_stats_user1)
|
|
--
|
|
SELECT pg_stat_statements_reset(r.oid)
|
|
FROM pg_roles AS r WHERE r.rolname = 'regress_stats_user1';
|
|
pg_stat_statements_reset
|
|
--------------------------
|
|
|
|
(1 row)
|
|
|
|
SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C";
|
|
query | calls | rows
|
|
----------------------------------------------------------------------------------+-------+------
|
|
CREATE ROLE regress_stats_user1 | 1 | 0
|
|
CREATE ROLE regress_stats_user2 | 1 | 0
|
|
RESET ROLE | 2 | 0
|
|
SELECT pg_stat_statements_reset( +| 1 | 1
|
|
(SELECT r.oid FROM pg_roles AS r WHERE r.rolname = $1), +| |
|
|
(SELECT d.oid FROM pg_database As d where datname = current_database()),+| |
|
|
(SELECT s.queryid FROM pg_stat_statements AS s +| |
|
|
WHERE s.query = $2 LIMIT $3)) | |
|
|
SELECT pg_stat_statements_reset($1) | 1 | 1
|
|
SELECT pg_stat_statements_reset($1,$2,s.queryid) +| 1 | 2
|
|
FROM pg_stat_statements AS s WHERE s.query = $3 | |
|
|
SELECT pg_stat_statements_reset() | 1 | 1
|
|
SELECT pg_stat_statements_reset(r.oid) +| 1 | 1
|
|
FROM pg_roles AS r WHERE r.rolname = $1 | |
|
|
SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C" | 4 | 46
|
|
SET ROLE regress_stats_user2 | 1 | 0
|
|
(10 rows)
|
|
|
|
--
|
|
-- reset all
|
|
--
|
|
SELECT pg_stat_statements_reset(0,0,0);
|
|
pg_stat_statements_reset
|
|
--------------------------
|
|
|
|
(1 row)
|
|
|
|
SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C";
|
|
query | calls | rows
|
|
------------------------------------------------------------------------------+-------+------
|
|
SELECT pg_stat_statements_reset(0,0,0) | 1 | 1
|
|
SELECT query, calls, rows FROM pg_stat_statements ORDER BY query COLLATE "C" | 0 | 0
|
|
(2 rows)
|
|
|
|
--
|
|
-- cleanup
|
|
--
|
|
DROP ROLE regress_stats_user1;
|
|
DROP ROLE regress_stats_user2;
|
|
DROP MATERIALIZED VIEW pgss_matv;
|
|
DROP TABLE pgss_ctas;
|
|
DROP TABLE pgss_select_into;
|
|
--
|
|
-- [re]plan counting
|
|
--
|
|
SELECT pg_stat_statements_reset();
|
|
pg_stat_statements_reset
|
|
--------------------------
|
|
|
|
(1 row)
|
|
|
|
CREATE TABLE test ();
|
|
PREPARE prep1 AS SELECT COUNT(*) FROM test;
|
|
EXECUTE prep1;
|
|
count
|
|
-------
|
|
0
|
|
(1 row)
|
|
|
|
EXECUTE prep1;
|
|
count
|
|
-------
|
|
0
|
|
(1 row)
|
|
|
|
EXECUTE prep1;
|
|
count
|
|
-------
|
|
0
|
|
(1 row)
|
|
|
|
ALTER TABLE 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 query, plans, calls, rows FROM pg_stat_statements
|
|
WHERE query NOT LIKE 'PREPARE%' ORDER BY query COLLATE "C";
|
|
query | plans | calls | rows
|
|
----------------------------------------------------------+-------+-------+------
|
|
ALTER TABLE test ADD COLUMN x int | 0 | 1 | 0
|
|
CREATE TABLE test () | 0 | 1 | 0
|
|
SELECT $1 | 3 | 3 | 3
|
|
SELECT pg_stat_statements_reset() | 0 | 1 | 1
|
|
SELECT query, plans, calls, rows FROM pg_stat_statements+| 1 | 0 | 0
|
|
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 query, plans >= 2 AND plans <= calls AS plans_ok, calls, rows FROM pg_stat_statements
|
|
WHERE query LIKE 'PREPARE%' ORDER BY query COLLATE "C";
|
|
query | plans_ok | calls | rows
|
|
--------------------------------------------+----------+-------+------
|
|
PREPARE prep1 AS SELECT COUNT(*) FROM test | t | 4 | 4
|
|
(1 row)
|
|
|
|
--
|
|
-- access to pg_stat_statements_info view
|
|
--
|
|
SELECT pg_stat_statements_reset();
|
|
pg_stat_statements_reset
|
|
--------------------------
|
|
|
|
(1 row)
|
|
|
|
SELECT dealloc FROM pg_stat_statements_info;
|
|
dealloc
|
|
---------
|
|
0
|
|
(1 row)
|
|
|
|
--
|
|
-- top level handling
|
|
--
|
|
SET pg_stat_statements.track = 'top';
|
|
DELETE FROM test;
|
|
DO $$
|
|
BEGIN
|
|
DELETE FROM test;
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
SELECT query, toplevel, plans, calls FROM pg_stat_statements WHERE query LIKE '%DELETE%' ORDER BY query COLLATE "C", toplevel;
|
|
query | toplevel | plans | calls
|
|
-----------------------+----------+-------+-------
|
|
DELETE FROM test | t | 1 | 1
|
|
DO $$ +| t | 0 | 1
|
|
BEGIN +| | |
|
|
DELETE FROM test;+| | |
|
|
END; +| | |
|
|
$$ LANGUAGE plpgsql | | |
|
|
(2 rows)
|
|
|
|
SET pg_stat_statements.track = 'all';
|
|
DELETE FROM test;
|
|
DO $$
|
|
BEGIN
|
|
DELETE FROM test;
|
|
END;
|
|
$$ LANGUAGE plpgsql;
|
|
SELECT query, toplevel, plans, calls FROM pg_stat_statements WHERE query LIKE '%DELETE%' ORDER BY query COLLATE "C", toplevel;
|
|
query | toplevel | plans | calls
|
|
-----------------------+----------+-------+-------
|
|
DELETE FROM test | f | 1 | 1
|
|
DELETE FROM test | t | 2 | 2
|
|
DO $$ +| t | 0 | 2
|
|
BEGIN +| | |
|
|
DELETE FROM test;+| | |
|
|
END; +| | |
|
|
$$ LANGUAGE plpgsql | | |
|
|
(3 rows)
|
|
|
|
-- FROM [ONLY]
|
|
CREATE TABLE tbl_inh(id integer);
|
|
CREATE TABLE tbl_inh_1() INHERITS (tbl_inh);
|
|
INSERT INTO tbl_inh_1 SELECT 1;
|
|
SELECT * FROM tbl_inh;
|
|
id
|
|
----
|
|
1
|
|
(1 row)
|
|
|
|
SELECT * FROM ONLY tbl_inh;
|
|
id
|
|
----
|
|
(0 rows)
|
|
|
|
SELECT COUNT(*) FROM pg_stat_statements WHERE query LIKE '%FROM%tbl_inh%';
|
|
count
|
|
-------
|
|
2
|
|
(1 row)
|
|
|
|
-- WITH TIES
|
|
CREATE TABLE limitoption AS SELECT 0 AS val FROM generate_series(1, 10);
|
|
SELECT *
|
|
FROM limitoption
|
|
WHERE val < 2
|
|
ORDER BY val
|
|
FETCH FIRST 2 ROWS WITH TIES;
|
|
val
|
|
-----
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
0
|
|
(10 rows)
|
|
|
|
SELECT *
|
|
FROM limitoption
|
|
WHERE val < 2
|
|
ORDER BY val
|
|
FETCH FIRST 2 ROW ONLY;
|
|
val
|
|
-----
|
|
0
|
|
0
|
|
(2 rows)
|
|
|
|
SELECT COUNT(*) FROM pg_stat_statements WHERE query LIKE '%FETCH FIRST%';
|
|
count
|
|
-------
|
|
2
|
|
(1 row)
|
|
|
|
-- GROUP BY [DISTINCT]
|
|
SELECT a, b, c
|
|
FROM (VALUES (1, 2, 3), (4, NULL, 6), (7, 8, 9)) AS t (a, b, c)
|
|
GROUP BY ROLLUP(a, b), rollup(a, c)
|
|
ORDER BY a, b, c;
|
|
a | b | c
|
|
---+---+---
|
|
1 | 2 | 3
|
|
1 | 2 |
|
|
1 | 2 |
|
|
1 | | 3
|
|
1 | | 3
|
|
1 | |
|
|
1 | |
|
|
1 | |
|
|
4 | | 6
|
|
4 | | 6
|
|
4 | | 6
|
|
4 | |
|
|
4 | |
|
|
4 | |
|
|
4 | |
|
|
4 | |
|
|
7 | 8 | 9
|
|
7 | 8 |
|
|
7 | 8 |
|
|
7 | | 9
|
|
7 | | 9
|
|
7 | |
|
|
7 | |
|
|
7 | |
|
|
| |
|
|
(25 rows)
|
|
|
|
SELECT a, b, c
|
|
FROM (VALUES (1, 2, 3), (4, NULL, 6), (7, 8, 9)) AS t (a, b, c)
|
|
GROUP BY DISTINCT ROLLUP(a, b), rollup(a, c)
|
|
ORDER BY a, b, c;
|
|
a | b | c
|
|
---+---+---
|
|
1 | 2 | 3
|
|
1 | 2 |
|
|
1 | | 3
|
|
1 | |
|
|
4 | | 6
|
|
4 | | 6
|
|
4 | |
|
|
4 | |
|
|
7 | 8 | 9
|
|
7 | 8 |
|
|
7 | | 9
|
|
7 | |
|
|
| |
|
|
(13 rows)
|
|
|
|
SELECT COUNT(*) FROM pg_stat_statements WHERE query LIKE '%GROUP BY%ROLLUP%';
|
|
count
|
|
-------
|
|
2
|
|
(1 row)
|
|
|
|
-- GROUPING SET agglevelsup
|
|
SELECT (
|
|
SELECT (
|
|
SELECT GROUPING(a,b) FROM (VALUES (1)) v2(c)
|
|
) FROM (VALUES (1,2)) v1(a,b) GROUP BY (a,b)
|
|
) FROM (VALUES(6,7)) v3(e,f) GROUP BY ROLLUP(e,f);
|
|
grouping
|
|
----------
|
|
0
|
|
0
|
|
0
|
|
(3 rows)
|
|
|
|
SELECT (
|
|
SELECT (
|
|
SELECT GROUPING(e,f) FROM (VALUES (1)) v2(c)
|
|
) FROM (VALUES (1,2)) v1(a,b) GROUP BY (a,b)
|
|
) FROM (VALUES(6,7)) v3(e,f) GROUP BY ROLLUP(e,f);
|
|
grouping
|
|
----------
|
|
3
|
|
0
|
|
1
|
|
(3 rows)
|
|
|
|
SELECT COUNT(*) FROM pg_stat_statements WHERE query LIKE '%SELECT GROUPING%';
|
|
count
|
|
-------
|
|
2
|
|
(1 row)
|
|
|
|
DROP EXTENSION pg_stat_statements;
|