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PG-186: Add support to monitor query execution plan.

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This requires refactoring of code to add this functionality. Along with
that this patch contains regression test cases.
This commit is contained in:
Ibrar Ahmed
2021-03-12 18:55:12 +00:00
parent 8f69daa5dd
commit 066162c3f6
34 changed files with 10234 additions and 1173 deletions
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28
regression/sql/histogram.sql Normal file
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CREATE EXTENSION pg_stat_monitor;
CREATE TABLE t1(a int);
SELECT pg_stat_monitor_reset();
INSERT INTO t1 VALUES(generate_series(1,10));
ANALYZE t1;
SELECT count(*) FROM t1;
INSERT INTO t1 VALUES(generate_series(1,10000));
ANALYZE t1;
SELECT count(*) FROM t1;;
INSERT INTO t1 VALUES(generate_series(1,1000000));
ANALYZE t1;
SELECT count(*) FROM t1;
INSERT INTO t1 VALUES(generate_series(1,10000000));
ANALYZE t1;
SELECT count(*) FROM t1;
SELECT query, calls, min_time, max_time, resp_calls FROM pg_stat_monitor ORDER BY query COLLATE "C";
SELECT * FROM histogram(0, 'F44CD1B4B33A47AF') AS a(range TEXT, freq INT, bar TEXT);
DROP TABLE t1;
SELECT pg_stat_monitor_reset();
DROP EXTENSION pg_stat_monitor;