mysqlbinlog工具的作用是什么呢,如何将binary log转换为文本格式?

需求描述:

　　今天在看mysqlbinlog这个工具,就在想这个工具到底是干嘛的呢,在mysql数据库中,

　　binary log中记录了数据库内容的变化或者说修改,这些修改是以二进制的方式存储到

　　binary log中的,那么要想将二进制格式转换成为文本格式,即通过文本格式显示

操作过程:

1.直接通过mysqlbinlog工具,将binary log以文本格式显示

mysqlbinlog mysql-bin. > /tmp/mysql-bin..txt

备注:将mysql-bin日志进行解析,并且将输出存放在txt文件中

2.查看生成的txt文件

[mysql@redhat6 data]$ more /tmp/mysql-bin..txt
/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=1*/;
/*!40019 SET @@session.max_insert_delayed_threads=0*/;
/*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/;
DELIMITER /*!*/;
# at
#  :: server id   end_log_pos      Start: binlog v , server v 5.5.-log created   :: at startup
ROLLBACK/*!*/;
BINLOG '
tmXNWg8BAAAAZwAAAGsAAAAAAAQANS41LjU3LWxvZwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAC2Zc1aEzgNAAgAEgAEBAQEEgAAVAAEGggAAAAICAgCAA==
'/*!*/;
# at
#  :: server id   end_log_pos      Query    thread_id=    exec_time=    error_code=
use `employees`/*!*/;
SET TIMESTAMP=/*!*/;
SET @@session.pseudo_thread_id=/*!*/;
SET @@session.foreign_key_checks=, @@session.sql_auto_is_null=, @@session.unique_checks=, @@session.autocommit=/*!*/;
SET @@session.sql_mode=/*!*/;
SET @@session.auto_increment_increment=, @@session.auto_increment_offset=/*!*/;
/*!\C utf8 *//*!*/;
SET @@session.character_set_client=,@@session.collation_connection=,@@session.collation_server=/*!*/;
SET @@session.lc_time_names=/*!*/;
SET @@session.collation_database=DEFAULT/*!*/;
DROP TABLE `titles` /* generated by server */
/*!*/;
# at
#  :: server id   end_log_pos      Query    thread_id=    exec_time=    error_code=
SET TIMESTAMP=/*!*/;
DROP TABLE `salaries` /* generated by server */
/*!*/;
# at
#  :: server id   end_log_pos      Query    thread_id=    exec_time=    error_code=
SET TIMESTAMP=/*!*/;
BEGIN
/*!*/;
# at
#  :: server id   end_log_pos      Query    thread_id=    exec_time=    error_code=
SET TIMESTAMP=/*!*/;

备注:其中就记录了时间,binlog的位置.做了操作的SQL语句.

文档创建时间:2018年4月18日11:13:57