?
MySQL通用查询日志(GeneralQueryLog)(三)
table';
Query OK, 0 rows affected (0.00 sec)
root@localhost[(none)]> select @@global.log_output;
+---------------------+
| @@global.log_output |
+---------------------+
| FILE,TABLE |
+---------------------+
root@localhost[(none)]> insert into tempdb.tb1 values(2,'robinson');
Query OK, 1 row affected (0.06 sec)
root@localhost[(none)]> commit;
Query OK, 0 rows affected (0.01 sec)
--验证结果，表和文件里边存在通用的日志记录
root@localhost[(none)]> system tail /tmp/suse11b.log|grep robinson
141003 17:41:54 2 Query insert into tempdb.tb1 values(2,'robinson')
root@localhost[(none)]> select thread_id,command_type,argument from mysql.general_log
-> where argument like '%robinson%';
+-----------+--------------+------------------------------------------------------------------------+
| thread_id | command_type | argument |
+-----------+--------------+------------------------------------------------------------------------+
| 2 | Query | insert into tempdb.tb1 values(2,'robinson') |
| 2 | Query | select thread_id,command_type,argument from mysql.general_log |
| | | where argument like ''robinson'' |
+-----------+--------------+------------------------------------------------------------------------+
d、关闭通用查询日志
--可以通过设置系统变量general_log来关闭通用查询日志，此时日志输出设置为FILE,TABLE
root@localhost[(none)]> show variables like 'log_output';
+---------------+------------+
| Variable_name | Value |
+---------------+------------+
| log_output | FILE,TABLE |
+---------------+------------+
root@localhost[(none)]>
set global general_log=off;
Query OK, 0 rows affected (0.01 sec)
root@localhost[(none)]> show variables like '%gener%';
+------------------+------------------+
| Variable_name | Value |
+------------------+------------------+
| general_log | OFF |
| general_log_file | /tmp/suse11b.log |
+------------------+------------------+
root@localhost[(none)]> delete from tempdb.tb1 where id=2;
Query OK, 1 row affected (0.12 sec)
root@localhost[(none)]> commit;
Query OK, 0 rows affected (0.00 sec)
root@localhost[(none)]> system tail -n 1 /tmp/suse11b.log
141003 17:45:13 2 Query set global general_log=off
root@localhost[(none)]> select thread_id,command_type,argument from mysql.general_log
-> where argument like '%delete%';
Empty set (0.00 sec)
--从上面的演示可知，尽管我们设置了log_output为FILE,TABLE，但general_log为OFF，通用日志无任何记录产生
root@localhost[(none)]> set global log_output=none;
Query OK, 0 rows affected (0.00 sec)
root@localhost[(none)]> set global general_log=1;
Query OK, 0 rows affected (0.00 sec)
root@localhost[(none)]> truncate table tempdb.tb1;
Query OK, 0 rows affected (0.01 sec)
root@localhost[(none)]> system tail -n 1 /tmp/suse11b.log
Time Id Command Argument
--通过上面的演示，在log_output=none,general_log=on的清下下无任何通用日志输出。