下面来为各位介绍一个mysql查看sql语句执行历史记录的例子,如果你希望跟踪你程序的执行性能我们就可以使用下面方法,有需要了解的朋友可进入看看.
mysql查看sql语句执行历史记录:
cat ~/.mysql_history
对于mysql版本5.1以后的版本,可以通过以下方式启动日志记录,能够记录下包括应用程序执行的sql语句.
- MariaDB [(none)]> SET GLOBAL log_output = 'TABLE';
- Query OK, 0 rows affected (0.02 sec)
- MariaDB [(none)]> SET GLOBAL general_log = 'ON';
- Query OK, 0 rows affected (0.00 sec)
- MariaDB [(none)]> show databases;
- +--------------------+
- | Database |
- +--------------------+
- | information_schema |
- | gfan_log |
- | gfan_pay |
- | gfanpg |
- | gfanrc |
- | mysql |
- | performance_schema |
- | ucenter |
- +--------------------+
- 8 rows in set (0.02 sec)
- MariaDB [(none)]> use mysql
- Reading table information for completion of table and column names
- You can turn off this feature to get a quicker startup with -A
- Database changed
- MariaDB [mysql]> show tables;
- +---------------------------+
- | Tables_in_mysql |
- +---------------------------+
- | columns_priv |
- | db |
- | event |
- | func |
- | general_log |
- | help_category |
- | help_keyword |
- | help_relation |
- | help_topic |
- | host |
- | ndb_binlog_index |
- | plugin |
- | proc |
- | procs_priv |
- | proxies_priv |
- | servers |
- | slow_log |
- | tables_priv |
- | time_zone |
- | time_zone_leap_second |
- | time_zone_name |
- | time_zone_transition |
- | time_zone_transition_type |
- | user |
- +---------------------------+
- 24 rows in set (0.00 sec)
- MariaDB [mysql]> select * from general_log limit 10;
- +----------------------------+---------------------------+-----------+-----------+--------------+-------------------+
- | event_time | user_host | thread_id | server_id | command_type | argument |
- +----------------------------+---------------------------+-----------+-----------+--------------+-------------------+
- | 2014-11-12 14:29:49.810999 | root[root] @ localhost [] | 1304 | 0 | Query | show databases |
- | 2014-11-12 14:29:51.951747 | root[root] @ localhost [] | 1304 | 0 | Query | SELECT DATABASE() |
- | 2014-11-12 14:29:51.973180 | root[root] @ localhost [] | 1304 | 0 | Init DB | mysql |
- | 2014-11-12 14:29:51.975048 | root[root] @ localhost [] | 1304 | 0 | Query | show databases |
- | 2014-11-12 14:29:51.975689 | root[root] @ localhost [] | 1304 | 0 | Query | show tables |
- | 2014-11-12 14:29:51.976347 | root[root] @ localhost [] | 1304 | 0 | Field List | columns_priv | --Vevb.com
- | 2014-11-12 14:29:51.976800 | root[root] @ localhost [] | 1304 | 0 | Field List | db |
- | 2014-11-12 14:29:51.977431 | root[root] @ localhost [] | 1304 | 0 | Field List | event |
- | 2014-11-12 14:29:51.978052 | root[root] @ localhost [] | 1304 | 0 | Field List | func |
- | 2014-11-12 14:29:51.978224 | root[root] @ localhost [] | 1304 | 0 | Field List | general_log |
- +----------------------------+---------------------------+-----------+-----------+--------------+-------------------+
- 10 rows in set (0.01 sec)
- MariaDB [mysql]>
- If you want to output to the log file:
- SET GLOBAL log_output = “FILE”;
- SET GLOBAL general_log_file = “/path/to/your/logfile.log”
- SET GLOBAL general_log = ‘ON’;
- Restart MySQL to apply the changes if you edit the config, e.g. /etc/mysql/my.cnf
- Now, if you’d like you can tail -f /var/log/mysql/mysql.log
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