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PG-267 Add testcase to test histogram.

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This commit adds following three sql based testcases:

1) Test unique application name set by user.
2) Histogram function is working properly as desired.
3) Error on insert is shown with proper message.
This commit is contained in:
Naeem Akhter
2022-01-19 18:04:02 +05:00
committed by Hamid Akhtar
parent 0573be4090
commit 5aa6764041
9 changed files with 308 additions and 23 deletions
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55
regression/sql/histogram.sql
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@@ -1,28 +1,39 @@
CREATE OR REPLACE FUNCTION generate_histogram()
RETURNS TABLE (
range TEXT, freq INT, bar TEXT
) AS $$
Declare
bucket_id integer;
query_id text;
BEGIN
select bucket into bucket_id from pg_stat_monitor order by calls desc limit 1;
select queryid into query_id from pg_stat_monitor order by calls desc limit 1;
--RAISE INFO 'bucket_id %', bucket_id;
--RAISE INFO 'query_id %', query_id;
return query
SELECT * FROM histogram(bucket_id, query_id) AS a(range TEXT, freq INT, bar TEXT);
END;
$$ LANGUAGE plpgsql;
CREATE OR REPLACE FUNCTION run_pg_sleep(INTEGER) RETURNS VOID AS $$
DECLARE
loops ALIAS FOR $1;
BEGIN
FOR i IN 1..loops LOOP
--RAISE INFO 'Current timestamp: %', timeofday()::TIMESTAMP;
RAISE INFO 'Sleep % seconds', i;
PERFORM pg_sleep(i);
END LOOP;
END;
$$ LANGUAGE 'plpgsql' STRICT;
CREATE EXTENSION pg_stat_monitor;
CREATE TABLE t1(a int);
SELECT pg_stat_monitor_reset();
Set pg_stat_monitor.track='all';
select run_pg_sleep(5);
INSERT INTO t1 VALUES(generate_series(1,10));
ANALYZE t1;
SELECT count(*) FROM t1;
SELECT substr(query, 0,50) as query, calls, resp_calls FROM pg_stat_monitor ORDER BY query COLLATE "C";
INSERT INTO t1 VALUES(generate_series(1,10000));
ANALYZE t1;
SELECT count(*) FROM t1;;
select * from generate_histogram();
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;