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Which mode exists at both global level and session-specific level?(a) sql_mode(b) key_buffer_size(c) server_mode(d) query_modeI have been asked this question in examination.My question comes from Tuning the Server in division General MySQL Administration of MySQL

Answer»

Correct option is (a) sql_mode

The best explanation: The SYSTEM variable ‘sql_mode’ that indicates the DEFAULT SQL mode is an example of a variable that exists at both the global and SESSION levels. This mode AFFECTS SEVERAL aspects of SQL statement processing.



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