通過 MySQL 二進制日誌恢復刪除的記錄
阿新 • • 發佈:2018-09-27
mysq type ado The from ins 語句 stop art 刪除 MySQL 表中的數據
mysql> use sbtest; mysql> select count(*) from sbtest1; +----------+ | count(*) | +----------+ | 1000 | +----------+ 1 row in set (0.00 sec) mysql> delete from sbtest1; Query OK, 1000 rows affected (0.21 sec) mysql> select count(*) from sbtest1; +----------+ | count(*) | +----------+ | 0 | +----------+ 1 row in set (0.00 sec)
確認時間點和當前二進制日誌文件,從二進制日誌中讀取操作記錄
mysqlbinlog --start-datetime="2018-09-27 15:55:00" --stop-datetime="2018-09-27 15:00:00" --base64-output=decode-rows --result-file=result.sql -v /var/lib/mysql/binlog.000022
其中的一條記錄
去除不相關的內容
grep -A 5 "DELETE FROM \`sbtest\`.\`sbtest1\`" result.sql > 1.txt
提取數據
grep "=" 1.txt > 2.txt sed -i ‘s/### //g‘ 2.txt
使用以下腳本生成 INSERT 語句
[root@mysql03 tmp]# cat r2.sh #!/bin/bash vs="" while read line do n=`echo $line | awk -NF "=" ‘{print $1}‘` v=`echo $line | awk -NF "=" ‘{print $2}‘` if [ "$n" = "@1" ]; then vs="INSERT INTO \`sbtest\`.\`sbtest1\` VALUES("$v elif [ "$n" = "@2" ]; then vs=$vs" , "$v elif [ "$n" = "@3" ]; then vs=$vs" , "$v elif [ "$n" = "@4" ]; then vs=$vs" , "$v");" echo $vs >> 3.txt fi done < 2.txt [root@mysql03 tmp]# sh r2.sh
將數據導入到 MySQL 表中
[root@mysql03 tmp]# mysql < 3.txt
mysql> select count(*) from sbtest1;
+----------+
| count(*) |
+----------+
| 1000 |
+----------+
1 row in set (0.00 sec)
通過 MySQL 二進制日誌恢復刪除的記錄