log文件 insert crc32 update row tid int from oot

模擬備份數據庫
mysqldump db1 > db1.sql

啟用新的bin-log文件
mysql>flush logs;
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+

| mysql-bin.000003 | 120 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

insert into travelrecord(id,user_id,traveldate,fee,days) values(1002,‘1002‘,20160102,100,10);
UPDATE travelrecord SET user_id = ‘hahaha‘ WHERE id = 1002;

delete from travelrecord where id=1002；

用mysqlbinlog mysql-bin.000003查看具體誤刪除的時間
mysqlbinlog mysql-bin.000003

#180123 15:24:07 server id 101 end_log_pos 847 CRC32 0x8e720ef9 Query thread_id=20 exec_time=0 error_code=0
SET TIMESTAMP=1516692247/!/;
delete from travelrecord where id=1002
/!/;
.# at 847

此時備份數據庫後在還原之前的備份數據。

mysql> set sql_log_bin=0; 臨時關閉以免恢復過程生成大量的bin-log文件

mysql> use db1;
mysql> source /root/db1.sql;

mysqlbinlog --stop-datetime="2018-01-23 15:24:07 " mysql-bin.000003| mysql -uroot -p

查看數據庫即可恢復數據。

mysql利用bin-log恢復誤刪除數據.