mysqlbinlog恢复数据

Posted 2020-11-27 Ray_chen

# 查看当前binlog状态

show master statusG;

# mysql中查看指定binlog信息

show binlog events in ‘mysql-bin.000010‘;

# 查询指定时间段内/位置的删除语句

mysqlbinlog --no-defaults --start-datetime=‘2020-03-03 07:00:00‘ --stop-datetime=‘2020-03-03 07:30:00‘ mysql-bin.000003 -d dbname -v | grep DELETE -A 5
mysqlbinlog --start-position=331 --stop-position=465 --database=test mysql-bin.000014  -v 

# 恢复

mysqlbinlog --start-position=331 --stop-position=465 --database=test mysql-bin.000014  -v --skip-gtids | mysql -v test

 #  将delete语句恢复成insert

mysqlbinlog --database=test mysql-bin.000014  --start-position=331 --stop-position=465 -v --base64-output=deco
de-rows | sed -n ‘/###/p‘ | sed -n ‘s/###//p‘ > test.sql

 

实例： 恢复delete语句删除的数据（本实例表只有3列，结合实际自行修改）

mysqlbinlog --database=test mysql-bin.000014  --start-position=331 --stop-position=465 -v --base64-output=decode-rows | sed -n ‘/###/p‘ | sed -n ‘s/###//p‘ > test.sql

sed ‘s/DELETE FROM/insert into/g‘ test.sql | sed ‘s/WHERE/select/g‘ | sed ‘s/@3.*/;/g‘ | sed ‘s/@[1-2].*/,/g‘ | sed ‘s/[^@](.*)=//g‘ > execSQL.sql


source execSQL.sql