MYSQL误删除DELETE数据找回

2022-11-29 12:39:37 524 其他:http://www.kaotop.com/it/1077862.html

1.查看binlog是否开启

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show variables like'%log_bin%';


2.查看数据文件存放路径:bin-log路径

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show variables like'%datadir%';


3.找到删除时间段的binlog,翻译为sql

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mysqlbinlog --base64-output=decode-rows -v --database=数据库名 --start-datetime="2022-10-19 16:40:00"--stop-datetime="2022-10-19 16:450:00""D:Program Filesmysql-5.7.30-winx64mysqldbbin.000041"; d:mysqllog.sql

4.在生成的 mysqllog.sql 文件同路径下 ,生成将delete翻译为insert的sql文件
linux:

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cat mysqllog.sql | sed -n'/###/p'| sed's/### //g;s//*./,/g;s/DELETE FROM/;INSERT INTO/g;s/WHERe/SELECt/g;'|sed -r's/(@17.),/1;/g'| sed's/@1=//g'| sed's/@[1-9]=/,/g'| sed's/@[1-9][0-9]=/,/g'; mysqllogOK.sql

5、windows:
在生成的sql文件同目录下,创建.vbs文件,写入如下内容,并双击执行
'==========================
'用VBS实现 MYSQL binglog DELETE转INSERT
'==========================
function replaceregex(patern,str,tagstr)
dim regex,matches
set regex=new regExp
regex.pattern=patern
regex.IgnoreCase=true
regex.global=true
matches=regex.replace(str,tagstr)
replaceregex=matches
end function

'Mysql binlog DELETE转INSERT==========
'VBS打开文本文件
Set oldStream = CreateObject(“ADODB.Stream”)
oldStream.CharSet = “utf-8”
oldStream.Open
oldStream.LoadFromFile(“mysqllog.sql”) 'binLog生成的DELETe原日志文件
oldText = oldStream.ReadText()
newText=replace(oldText,“### DELETE FROM”, “;INSERT INTO”)
newText=replace(newText,“### WHERe”, “SELECT”)
newText=replace(newText,“###”, “”)
newText=replace(newText,“@1=”, “”)
newText=replaceregex(“@[1-9]=”,newText, “,”)
newText=replaceregex(“@[1-9][0-9]=”,newText, “,”)
oldStream.Close
'VBS保存文件
Set newStream = CreateObject(“ADODB.Stream”)
newStream.Type = 2 'Specify stream type - we want To save text/string data.
newStream.Charset = “utf-8” 'Specify charset For the source text data.
newStream.Open 'Open the stream And write binary data To the object
newStream.WriteText newText
newStream.SaveToFile “mysqllogOK.sql”, 2 'DELETE转成INSERT以后的新的SQL文件名
newStream.Close

6、把mysqllog.sql文件和生成的windows中的.vbs放在同一个文件夹中双击执行生成mysqllogOK.sql文件
7、进入mysqllogOK.sql文件删除其中的delete保留insert再去执行mysqllogOK.sql就成功了
8、如果binlog日志没有开启可以进行开启
linux:

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cd /usr/etc/

vim my.cnf


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log-bin=mysql-bin # 开启Binlog 一般只需要修改这一行即可

binlog-format=ROW # 设置格式 此行可以不加 命令设置即可 详见下方拓展

server_id=1# 配置serverID 这一行本来就存在

systemctl restart mysqld #重启mysql

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