MySQL> show binary logs;
+—————-+———–+
| Log_name | File_size |
+—————-+———–+
| mysql-bin.000001 | 150462942 |
| mysql-bin.000002 | 125 |
| mysql-bin.000003 | 106 |
+—————-+———–+

mysql> purge binary logs to 'mysql-bin.000003';
Query OK, 0 rows affected (0.16 sec)

mysql> show binlog events/G
*************************** 1. row ***************************
Log_name: mysql-bin.000003
Pos: 4
Event_type: Format_desc
Server_id: 1
End_log_pos: 106
Info: Server ver: 5.1.26-rc-log, Binlog ver: 4
1 row in set (0.01 sec)
(mysql-bin.000001和mysql-bin.000002已被删除)
mysql> show binary logs;
+—————-+———–+
| Log_name | File_size |
+—————-+———–+
| mysql-bin.000003 | 106 |
+—————-+———–+
1 row in set (0.00 sec)

PURGE {MASTER | BINARY} LOGS TO 'log_name'
PURGE {MASTER | BINARY} LOGS BEFORE 'date'

PURGE MASTER LOGS TO 'mysql-bin.010′;
PURGE MASTER LOGS BEFORE '2008-06-22 13:00:00′;

PURGE MASTER LOGS BEFORE DATE_SUB( NOW( ), INTERVAL 3 DAY);