服務器為每個連接的客戶端執行的字符串。該字符串由一個或多個SQL語句組成，用分號字符分隔。
例如，默認情況下每個客戶端會話都啟用自動提交模式。對於較舊的服務器（在MySQL 5.5.8之前），
沒有全局自動提交系統變量來指定默認情況下應禁用自動提交，但作為解決方法，init_connect可用於實現相同的效果：

SET GLOBAL init_connect ='SET autocommit = 0';

1.創建數據庫及表

創建數據庫：

create database dba;

創建表：

create table accesslog(`thread_id` int primary key auto_increment, `time` timestamp, `localname` varchar(40), `machine_name` varchar(40));

thread_id : 記錄mysql 線程ID

time：記錄操作時間

localname：記錄操作遠程IP

machine_name：記錄用戶

2.變量配置

查看init_connect

+---------------+-------+
| Variable_name | Value |                                                                                                               |
+---------------+-------+
| init_connect  |       |
| init_file     |       |
| init_slave    |       |
+---------------+-------+
3 rows in set (0.00 sec)

配置變量

set global init_connect='insert into dba.accesslog(thread_id,time,localname,machine_name) values(connection_id(),now(),user(),current_user());';

再次查看init_connect

+---------------+-----------------------------------------------------------------------------------------------------------------------+
| Variable_name | Value                                                                                                                 |
+---------------+-----------------------------------------------------------------------------------------------------------------------+
| init_connect  | insert into dba.accesslog(thread_id,time,localname,machine_name) values(connection_id(),now(),user(),current_user()); |
| init_file     |                                                                                                                       |
| init_slave    |                                                                                                                       |
+---------------+-----------------------------------------------------------------------------------------------------------------------+
3 rows in set (0.00 sec)

3.為用戶賦記錄日誌權限

grant select,insert,update on dba.accesslog to 'zhaohongming'@'%';

4.模擬用戶操作添加刪除

root@localhost:(none) 11:34:49 >use sdlcqw;

root@localhost:(none) 11:34:49 >crate table haha(cc int);

root@localhost:(none) 11:34:49 >drop table haha;

5.查看binlog記錄

導出binlog內容：

# mysqlbinlog mysql-bin.000079 > /root/9.txt

查詢log表：

root@localhost:(none) 11:39:41 >use dba;
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
root@localhost:dba 11:39:50 >select * from accesslog limit 1;
+-----------+---------------------+------------------------+----------------+
| thread_id | time                | localname              | machine_name   |
+-----------+---------------------+------------------------+----------------+
|    279950 | 2018-05-24 08:51:37 | zhaohongming@localhost | zhaohongming@% |
+-----------+---------------------+------------------------+----------------+
1 row in set (0.00 sec)

6.查看binlog內容

上面的線程是279950

# cat 9.txt | grep -B 10 haha

# at 267289752
#180524  8:52:35 server id 1  end_log_pos 267289794 CRC32 0x542b2211    GTID 0-1-2743823 ddl
/*!100001 SET @@session.gtid_seq_no=2743823*//*!*/;
# at 267289794
#180524  8:52:35 server id 1  end_log_pos 267289888 CRC32 0x6d9ec74d    Query   thread_id=279950        exec_time=0     error_code=0
use `sdlcqw`/*!*/;
SET TIMESTAMP=1527123155/*!*/;
SET @@session.sql_auto_is_null=0, @@session.check_constraint_checks=1/*!*/;
/*!\C utf8 *//*!*/;
SET @@session.character_set_client=33,@@session.collation_connection=33,@@session.collation_server=33/*!*/;
create table haha(cc int)
--
#180524  8:52:42 server id 1  end_log_pos 267296661 CRC32 0x4552d77e    Xid = 105731850
COMMIT/*!*/;
# at 267296661
#180524  8:52:42 server id 1  end_log_pos 267296703 CRC32 0x42549f0e    GTID 0-1-2743846 ddl
/*!100001 SET @@session.gtid_seq_no=2743846*//*!*/;
# at 267296703
#180524  8:52:42 server id 1  end_log_pos 267296815 CRC32 0x8b715e13    Query   thread_id=279950        exec_time=0     error_code=0
use `sdlcqw`/*!*/;
SET TIMESTAMP=1527123162/*!*/;
SET @@session.sql_mode=1342177280/*!*/;
DROP TABLE `haha` /* generated by server */

Mysql 記錄用戶操作