SELECT object_schema, object_name FROM performance_schema.objects_summary_global_by_type
WHERE object_schema='test';
object_schema	object_name
CREATE TABLE test.t_before(a INT);
INSERT INTO test.t_before VALUES (1);
SELECT object_schema, object_name FROM performance_schema.objects_summary_global_by_type
WHERE object_schema='test';
object_schema	object_name
test	t_before
RENAME TABLE test.t_before TO test.t_after;
SELECT COUNT(*) FROM test.t_after;
COUNT(*)
1
SELECT object_schema, object_name FROM performance_schema.objects_summary_global_by_type
WHERE object_schema='test';
object_schema	object_name
test	t_after
DROP TABLE test.t_after;
SELECT object_schema, object_name FROM performance_schema.objects_summary_global_by_type
WHERE object_schema='test';
object_schema	object_name
CREATE TABLE test.t1(a INT);
INSERT INTO test.t1 VALUES (1);
CREATE VIEW test.v1 AS SELECT * FROM test.t1;
SELECT COUNT(*) FROM test.v1;
COUNT(*)
1
SELECT object_schema, object_name FROM performance_schema.objects_summary_global_by_type
WHERE object_schema='test';
object_schema	object_name
test	t1
DROP VIEW test.v1;
DROP TABLE test.t1;
SELECT object_schema, object_name FROM performance_schema.objects_summary_global_by_type
WHERE object_schema='test';
object_schema	object_name
SELECT EVENT_ID FROM performance_schema.events_waits_current
WHERE THREAD_ID IN
(SELECT THREAD_ID FROM performance_schema.threads)
AND EVENT_NAME IN
(SELECT NAME FROM performance_schema.setup_instruments
WHERE NAME LIKE "wait/synch/%")
LIMIT 1;
create table test.t1(a int) engine=performance_schema;
ERROR HY000: Can't create table `test`.`t1` (errno: 131 "Command not supported by the engine")
SELECT object_schema, object_name FROM performance_schema.objects_summary_global_by_type
WHERE object_schema='test';
object_schema	object_name
create table test.t1 like performance_schema.events_waits_current;
ERROR HY000: Can't create table `test`.`t1` (errno: 131 "Command not supported by the engine")
SELECT object_schema, object_name FROM performance_schema.objects_summary_global_by_type
WHERE object_schema='test';
object_schema	object_name
create table performance_schema.t1(a int);
ERROR 42000: CREATE command denied to user 'root'@'localhost' for table `performance_schema`.`t1`
SELECT object_schema, object_name FROM performance_schema.objects_summary_global_by_type
WHERE object_schema='test';
object_schema	object_name
drop table if exists test.ghost;
create table test.ghost (a int, b int);
alter table test.ghost add index index_a(a);
alter table test.ghost add index index_b(b);
insert into test.ghost values (1, 3);
insert into test.ghost values (2, 4);
select * from test.ghost;
a	b
1	3
2	4
drop table test.ghost;
select * from performance_schema.file_instances
where file_name like "%ghost%";
FILE_NAME	EVENT_NAME	OPEN_COUNT
select * from performance_schema.no_such_table;
ERROR 42S02: Table 'performance_schema.no_such_table' doesn't exist
DROP TABLE IF EXISTS t_60905;
CREATE TABLE t_60905 (i INT, j INT, KEY(i)) ENGINE = InnoDB;
INSERT INTO t_60905 VALUES
(1,2), (3,4), (5,6), (7,8), (9,10);
DELETE FROM t_60905 WHERE i = 1;
DELETE FROM t_60905 WHERE j = 8;
SELECT object_schema,
object_name,
index_name,
count_fetch,
count_insert,
count_update,
count_delete
FROM performance_schema.table_io_waits_summary_by_index_usage
WHERE object_schema = 'test'
   AND object_name = 't_60905';
object_schema	object_name	index_name	count_fetch	count_insert	count_update	count_delete
test	t_60905	i	2	0	0	1
test	t_60905	NULL	5	5	0	1
DROP TABLE t_60905;
show global variables like "performance_schema_max_thread_instances";
Variable_name	Value
performance_schema_max_thread_instances	200
explain select * from performance_schema.threads;
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE	threads	ALL	NULL	NULL	NULL	NULL	256	
use performance_schema;
show events;
Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status	Originator	character_set_client	collation_connection	Database Collation
show events from performance_schema;
Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status	Originator	character_set_client	collation_connection	Database Collation
show events where Db= 'performance_schema';
Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status	Originator	character_set_client	collation_connection	Database Collation
use test;
use test;
truncate performance_schema.events_statements_history;
truncate performance_schema.events_statements_history_long;
select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist

select mysql_errno, returned_sqlstate, message_text, errors, warnings
from performance_schema.events_statements_history where errors > 0;
mysql_errno	returned_sqlstate	message_text	errors	warnings
1146	42S02	Table 'test.t1' doesn't exist	1	0
#
select mysql_errno, returned_sqlstate, message_text, errors, warnings from 
performance_schema.events_statements_history_long where errors > 0;
mysql_errno	returned_sqlstate	message_text	errors	warnings
1146	42S02	Table 'test.t1' doesn't exist	1	0
use performance_schema;
truncate performance_schema.events_statements_history;
select 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' AS A;
A
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
select _utf8mb4 'васÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑвасÑ' as B;
B
вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�вас�
select count(*) from events_statements_history where sql_text like "%...";
count(*)
2
use test;
create table t1 (id int);
insert into t1 values (1), (2), (3);
truncate performance_schema.events_statements_history;
select * from t1;
id
1
2
3
insert into t1 select RAND()*10000 from t1;
select sql_text, rows_examined from performance_schema.events_statements_history;
sql_text	rows_examined
truncate performance_schema.events_statements_history	0
select * from t1	3
insert into t1 select RAND()*10000 from t1	6
drop table t1;
#
# MDEV-17896 Assertion `pfs->get_refcount() > 0' failed
# in release_table_share
#
SELECT COUNT(*)<@@performance_schema_max_table_instances FROM
performance_schema.objects_summary_global_by_type WHERE OBJECT_TYPE='TABLE';
COUNT(*)<@@performance_schema_max_table_instances
1
CREATE TABLE t0(a INT);
SELECT * FROM t0;
a
DROP TEMPORARY TABLE IF EXISTS t0;
Warnings:
Note	1051	Unknown table 'test.t0'
FLUSH TABLE t0;
DROP TABLE t0;
#
# MDEV-24364 Alter rename table does not remove PFS share
#
create or replace table yt4 (x int) engine innodb;
alter table yt4 rename to t1, algorithm=copy;
drop tables t1;
select object_type, object_schema, object_name
from performance_schema.objects_summary_global_by_type
where object_schema="test";
object_type	object_schema	object_name
#
# MDEV-28344: sys.ps_setup_save and dependent procedures fail
#             with ER_ILLEGAL_HA_CREATE_OPTION
#
CREATE TEMPORARY TABLE t1 (t int) ENGINE = PERFORMANCE_SCHEMA;
ERROR HY000: Table storage engine 'PERFORMANCE_SCHEMA' does not support the create option 'TEMPORARY'
CREATE TEMPORARY TABLE t1 LIKE performance_schema.setup_actors;
ERROR HY000: Table storage engine 'PERFORMANCE_SCHEMA' does not support the create option 'TEMPORARY'
SET @default_storage_engine_old = @@default_storage_engine;
SET default_storage_engine = performance_schema;
CREATE TEMPORARY TABLE t1 (t int);
ERROR HY000: Table storage engine 'PERFORMANCE_SCHEMA' does not support the create option 'TEMPORARY'
SET @@default_storage_engine = @default_storage_engine_old;