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insert into performance_schema.setup_actors values ("host1","user1","%",'YES','YES');
insert into performance_schema.setup_actors values ("host2","user1","%",'YES','YES');
insert into performance_schema.setup_actors values ("host3","user1","%",'YES','YES');
############ Explain for Query ####################################
explain select HOST, USER, `ROLE`
from performance_schema.setup_actors
where HOST = 'host1';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE setup_actors NULL ref PRIMARY PRIMARY 255 const # 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select `performance_schema`.`setup_actors`.`HOST` AS `HOST`,`performance_schema`.`setup_actors`.`USER` AS `USER`,`performance_schema`.`setup_actors`.`ROLE` AS `ROLE` from `performance_schema`.`setup_actors` where (`performance_schema`.`setup_actors`.`HOST` = 'host1')
############ Explain for Query ####################################
explain select *
from performance_schema.setup_actors
where HOST = 'host1' and USER = 'user1';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE setup_actors NULL ref PRIMARY PRIMARY 383 const,const # 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select `performance_schema`.`setup_actors`.`HOST` AS `HOST`,`performance_schema`.`setup_actors`.`USER` AS `USER`,`performance_schema`.`setup_actors`.`ROLE` AS `ROLE`,`performance_schema`.`setup_actors`.`ENABLED` AS `ENABLED`,`performance_schema`.`setup_actors`.`HISTORY` AS `HISTORY` from `performance_schema`.`setup_actors` where ((`performance_schema`.`setup_actors`.`USER` = 'user1') and (`performance_schema`.`setup_actors`.`HOST` = 'host1'))
############ Explain for Query ####################################
explain select *
from performance_schema.setup_actors
where HOST = 'host1' and USER = 'user1'
and `ROLE` = 'norole';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL # NULL no matching row in const table
Warnings:
Note 1003 /* select#1 */ select NULL AS `HOST`,NULL AS `USER`,NULL AS `ROLE`,NULL AS `ENABLED`,NULL AS `HISTORY` from `performance_schema`.`setup_actors` where (multiple equal('host1', NULL) and multiple equal('user1', NULL) and multiple equal('norole', NULL))
############ Explain for Query ####################################
explain select HOST, USER, `ROLE`
from performance_schema.setup_actors
where HOST = 'nohost' and USER = 'user1'
and `ROLE` = '%';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL # NULL no matching row in const table
Warnings:
Note 1003 /* select#1 */ select NULL AS `HOST`,NULL AS `USER`,NULL AS `ROLE` from `performance_schema`.`setup_actors` where (multiple equal('nohost', NULL) and multiple equal('user1', NULL) and multiple equal('%', NULL))
############ Explain for Query ####################################
explain select HOST, USER, `ROLE`
from performance_schema.setup_actors
where HOST = 'host1' and USER = 'nouser'
and `ROLE` = '%';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL # NULL no matching row in const table
Warnings:
Note 1003 /* select#1 */ select NULL AS `HOST`,NULL AS `USER`,NULL AS `ROLE` from `performance_schema`.`setup_actors` where (multiple equal('host1', NULL) and multiple equal('nouser', NULL) and multiple equal('%', NULL))
############ Explain for Query ####################################
explain select HOST, USER, `ROLE`
from performance_schema.setup_actors
where HOST = 'host1' and USER = 'user1'
and `ROLE` = '%';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
1 SIMPLE setup_actors NULL const PRIMARY PRIMARY 511 const,const,const # 100.00 NULL
Warnings:
Note 1003 /* select#1 */ select 'host1' AS `HOST`,'user1' AS `USER`,'%' AS `ROLE` from `performance_schema`.`setup_actors` where true
############# Explain End #########################################
flush status;
select ENABLED, HISTORY
from performance_schema.setup_actors
where HOST = 'TBALE' and USER = 'user1'
and `ROLE` = '%';
ENABLED HISTORY
show session status like "handler_read%";
Variable_name Value
Handler_read_first 0
Handler_read_key 1
Handler_read_last 0
Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
select ENABLED, HISTORY
from performance_schema.setup_actors
where HOST = 'host1' and USER = 'user1'
and `ROLE` = '%';
ENABLED HISTORY
YES YES
show session status like "handler_read%";
Variable_name Value
Handler_read_first 0
Handler_read_key 2
Handler_read_last 0
Handler_read_next 0
Handler_read_prev 0
Handler_read_rnd 0
Handler_read_rnd_next 0
delete from performance_schema.setup_actors where user = 'user1';
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