1.查看binlog是否开启
show variables like '%log_bin%';
2.查看数据文件存放路径:bin-log路径
show variables like '%datadir%';
3.找到删除时间段的binlog,翻译为sql(把服务器上面的binlog文件复制到本地再进行操作)
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 Files\mysql-5.7.30-winx64\mysqldb\bin.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:
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:
cd /usr/etc/
vim my.cnf
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