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ee7cc0a466
client is not using any database to execute the SQL. Analysis: When there is no database, the database string is NULL so (null) gets printed. Fix: Print NULL instead of (null) because when there is no database SELECT DATABASE() return NULL. SO NULL is more appropriate choice.
38 lines
1.4 KiB
Plaintext
38 lines
1.4 KiB
Plaintext
show variables like 'sql_error_log%';
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Variable_name Value
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sql_error_log_filename sql_errors.log
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sql_error_log_rate 1
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sql_error_log_rotate OFF
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sql_error_log_rotations 9
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sql_error_log_size_limit 1000000
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sql_error_log_with_db_and_thread_info ON
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set global sql_error_log_rate=1;
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# Trying to set the variable at runtime
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SET sql_error_log_with_db_and_thread_info=OFF;
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ERROR HY000: Variable 'sql_error_log_with_db_and_thread_info' is a read only variable
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#
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# Using test database from mtr
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#
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DROP DATABASE db;
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ERROR HY000: Can't drop database 'db'; database doesn't exist
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#
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# Using no database at all
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#
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DROP DATABASE test;
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DROP DATABASE db;
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ERROR HY000: Can't drop database 'db'; database doesn't exist
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#
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# Using database with name `NULL`
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#
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CREATE DATABASE `NULL`;
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USE `NULL`;
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DROP DATABASE db;
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ERROR HY000: Can't drop database 'db'; database doesn't exist
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THREAD_ID `test` TIME HOSTNAME ERROR 1238: Variable 'sql_error_log_with_db_and_thread_info' is a read only variable : SET sql_error_log_with_db_and_thread_info=OFF
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THREAD_ID `test` TIME HOSTNAME ERROR 1008: Can't drop database 'db'; database doesn't exist : DROP DATABASE db
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THREAD_ID NULL TIME HOSTNAME ERROR 1008: Can't drop database 'db'; database doesn't exist : DROP DATABASE db
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THREAD_ID `NULL` TIME HOSTNAME ERROR 1008: Can't drop database 'db'; database doesn't exist : DROP DATABASE db
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DROP DATABASE `NULL`;
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# Reset
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CREATE DATABASE test;
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