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