背景：delete table忘了加条件导致整张表被删除
恢复方式：直接从binlog里反解析delete语句为insert进行恢复
导出删指定表的DELETE语句：
# mysqlbinlog -vv -d dbname mysql-bin.000048 | awk '/DELETE FROM/ && (/dbname.tbname/ || /`dbname.`tbname`/){
while(1){
print $0;
getline;
if($0 !~ /^###/){
break;
};
}
}' > dbname.tbname.delete.txt去掉binlog每行开头的#
# sed -i 's/^### //g' dbname.tbname.delete.txt语句转换 DELETE --> INSERT
# sed -i "s/^DELETE FROM/INSERT INTO/g" dbname.tbname.delete.txt
# sed -i "s/^WHERE/VALUES(/g" dbname.tbname.delete.txt
# sed -i '/@13=.*/a );' dbname.tbname.delete.txt字段处理
# cat dbname.tbname.delete.txt | awk -F"=|/*" '{
if($0 ~ /^INSERT|^VALUES|^);/){
print $0;
}else{
printf $2",";
};
}' > dbname.tbname.insert.sql去掉values()最后一个逗号
# sed -i "s/,);$/);/g" dbname.tbname.insert.sql至此就将delete语句反解析为insert语句了