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528abc749e
Improve documentation of performance_schema tables by appending COLUMN comments to tables. Additionally improve test coverage and update corresponding tests.
37 lines
1.8 KiB
Plaintext
37 lines
1.8 KiB
Plaintext
SELECT * FROM performance_schema.session_connect_attrs
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LIMIT 1;
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SELECT * FROM performance_schema.session_connect_attrs
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where ATTR_NAME='FOO' OR ATTR_VALUE='BAR';
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INSERT INTO performance_schema.session_connect_attrs
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SET ATTR_NAME='FOO', ATTR_VALUE='BAR',
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ORDINAL_POSITION=100, PROCESS_ID=102;
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ERROR 42000: INSERT command denied to user 'root'@'localhost' for table 'session_connect_attrs'
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UPDATE performance_schema.session_connect_attrs
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SET ATTR_NAME='FOO';
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ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table 'session_connect_attrs'
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UPDATE performance_schema.session_connect_attrs
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SET ATTR_NAME='FOO' WHERE ATTR_VALUE='BAR';
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ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table 'session_connect_attrs'
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DELETE FROM performance_schema.session_connect_attrs
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WHERE ATTR_VALUE='BAR';
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ERROR 42000: DELETE command denied to user 'root'@'localhost' for table 'session_connect_attrs'
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DELETE FROM performance_schema.session_connect_attrs;
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ERROR 42000: DELETE command denied to user 'root'@'localhost' for table 'session_connect_attrs'
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LOCK TABLES performance_schema.session_connect_attrs READ;
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ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table 'session_connect_attrs'
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UNLOCK TABLES;
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LOCK TABLES performance_schema.session_connect_attrs WRITE;
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ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table 'session_connect_attrs'
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UNLOCK TABLES;
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#
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# MDEV-25325 column_comment for performance_schema tables
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#
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select column_name, column_comment
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from information_schema.columns
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where table_schema='performance_schema' and table_name='session_connect_attrs';
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column_name column_comment
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PROCESSLIST_ID Session connection identifier.
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ATTR_NAME Attribute name.
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ATTR_VALUE Attribute value.
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ORDINAL_POSITION Order in which attribute was added to the connection attributes.
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