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30 lines
1.2 KiB
Plaintext
30 lines
1.2 KiB
Plaintext
SELECT EVENT_ID FROM performance_schema.events_waits_current
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WHERE THREAD_ID IN
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(SELECT THREAD_ID FROM performance_schema.threads)
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AND EVENT_NAME IN
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(SELECT NAME FROM performance_schema.setup_instruments
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WHERE NAME LIKE "wait/synch/%")
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LIMIT 1;
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create table test.t1(a int) engine=performance_schema;
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ERROR HY000: Can't create table `test`.`t1` (errno: 131 "Command not supported by database")
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create table test.t1 like performance_schema.events_waits_current;
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ERROR HY000: Can't create table `test`.`t1` (errno: 131 "Command not supported by database")
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create table performance_schema.t1(a int);
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ERROR 42000: CREATE command denied to user 'root'@'localhost' for table 't1'
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drop table if exists test.ghost;
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create table test.ghost (a int, b int);
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alter table test.ghost add index index_a(a);
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alter table test.ghost add index index_b(b);
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insert into test.ghost values (1, 3);
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insert into test.ghost values (2, 4);
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select * from test.ghost;
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a b
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1 3
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2 4
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drop table test.ghost;
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select * from performance_schema.file_instances
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where file_name like "%ghost%";
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FILE_NAME EVENT_NAME OPEN_COUNT
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select * from performance_schema.no_such_table;
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ERROR 42S02: Table 'performance_schema.no_such_table' doesn't exist
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