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Add query denormalization regression test for prepared statements 

Ensures that the denormalization of prepared statements is working, also
ensure that a query which takes more time to execute replaces the
previous denormalized query.
pull/481/head
Diego Fronza 2024-08-09 16:23:47 -03:00
parent 522786c581
commit 3133851333
3 changed files with 56 additions and 2 deletions
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4
Makefile
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@ -12,7 +12,7 @@ LDFLAGS_SL += $(filter -lm, $(LIBS))
TAP_TESTS = 1
REGRESS_OPTS = --temp-config $(top_srcdir)/contrib/pg_stat_monitor/pg_stat_monitor.conf --inputdir=regression
REGRESS = basic version guc pgsm_query_id functions counters relations database error_insert application_name application_name_unique top_query different_parent_queries cmd_type error rows tags user level_tracking
REGRESS = basic version guc pgsm_query_id functions counters relations database error_insert application_name application_name_unique top_query different_parent_queries cmd_type error rows tags user level_tracking denorm_prepared_statements
# Disabled because these tests require "shared_preload_libraries=pg_stat_statements",
# which typical installcheck users do not have (e.g. buildfarm clients).
@ -40,4 +40,4 @@ update-typedefs:
indent:
pgindent --typedefs=typedefs-full.list .
.PHONY: update-typedefs indent
.PHONY: update-typedefs indent

35
regression/expected/denorm_prepared_statements.out Normal file
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@ -0,0 +1,35 @@
CREATE EXTENSION pg_stat_monitor;
Set pg_stat_monitor.pgsm_normalized_query='off';
CREATE TABLE t1 (a TEXT, b TEXT, c TEXT);
SELECT pg_stat_monitor_reset();
pg_stat_monitor_reset
-----------------------
(1 row)
PREPARE prepstmt(TEXT, TEXT, TEXT) AS INSERT INTO t1(a, b, c) VALUES($1, $2, $3);
EXECUTE prepstmt('A', 'B', 'C');
SELECT SUBSTRING(query, 0, 128), calls FROM pg_stat_monitor ORDER BY query COLLATE "C";
substring | calls
--------------------------------------------------------------------------------+-------
PREPARE prepstmt(TEXT, TEXT, TEXT) AS INSERT INTO t1(a, b, c) VALUES(A, B, C); | 1
SELECT pg_stat_monitor_reset() | 1
(2 rows)
EXECUTE prepstmt(REPEAT('XYZ', 8192), md5(random()::text), REPEAT('RANDOM', 4096));
SELECT SUBSTRING(query, 0, 128), calls FROM pg_stat_monitor ORDER BY query COLLATE "C";
substring | calls
---------------------------------------------------------------------------------------------------------------------------------+-------
PREPARE prepstmt(TEXT, TEXT, TEXT) AS INSERT INTO t1(a, b, c) VALUES(XYZXYZXYZXYZXYZXYZXYZXYZXYZXYZXYZXYZXYZXYZXYZXYZXYZXYZXYZX | 2
SELECT SUBSTRING(query, 0, 128), calls FROM pg_stat_monitor ORDER BY query COLLATE "C" | 1
SELECT pg_stat_monitor_reset() | 1
(3 rows)
DROP TABLE t1;
SELECT pg_stat_monitor_reset();
pg_stat_monitor_reset
-----------------------
(1 row)
DROP EXTENSION pg_stat_monitor;

19
regression/sql/denorm_prepared_statements.sql Normal file
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@ -0,0 +1,19 @@
CREATE EXTENSION pg_stat_monitor;
Set pg_stat_monitor.pgsm_normalized_query='off';
CREATE TABLE t1 (a TEXT, b TEXT, c TEXT);
SELECT pg_stat_monitor_reset();
PREPARE prepstmt(TEXT, TEXT, TEXT) AS INSERT INTO t1(a, b, c) VALUES($1, $2, $3);
EXECUTE prepstmt('A', 'B', 'C');
SELECT SUBSTRING(query, 0, 128), calls FROM pg_stat_monitor ORDER BY query COLLATE "C";
EXECUTE prepstmt(REPEAT('XYZ', 8192), md5(random()::text), REPEAT('RANDOM', 4096));
SELECT SUBSTRING(query, 0, 128), calls FROM pg_stat_monitor ORDER BY query COLLATE "C";
DROP TABLE t1;
SELECT pg_stat_monitor_reset();
DROP EXTENSION pg_stat_monitor;