mysql - 如何获取每次更新查询中mysql受影响的行数

Question

是否有可能捕获记录到 mysql binlog 的每个更新查询中受影响的行数。有 friend 请分享一下

谢谢

Answer 1

这是一个 awk 脚本，它将使用 mysqlbinlog 输出并从基于行的二进制日志打印 INSERT/UPDATE/DELETE 事件的漂亮摘要。
只需将 mysqld-bin.000023 替换为您的二进制日志文件 --start-datetime="2015-01-12 21:40:00"和 --stop-datetime="2015-01-12 21:45:00" 为您喜欢的值。 Source

mysqlbinlog --base64-output=decode-rows -vv --start-datetime="2015-01-12 21:40:00"  --stop-datetime="2015-01-12 21:45:00" mysqld-bin.000023 | awk \
'BEGIN {s_type=""; s_count=0;count=0;insert_count=0;update_count=0;delete_count=0;flag=0;} \
{if(match($0, /#15.*Table_map:.*mapped to number/)) {printf "Timestamp : " $1 " " $2 " Table : " $(NF-4); flag=1} \
else if (match($0, /(### INSERT INTO .*..*)/)) {count=count+1;insert_count=insert_count+1;s_type="INSERT"; s_count=s_count+1;}  \
else if (match($0, /(### UPDATE .*..*)/)) {count=count+1;update_count=update_count+1;s_type="UPDATE"; s_count=s_count+1;} \
else if (match($0, /(### DELETE FROM .*..*)/)) {count=count+1;delete_count=delete_count+1;s_type="DELETE"; s_count=s_count+1;}  \
else if (match($0, /^(# at) /) && flag==1 && s_count>0) {print " Query Type : "s_type " " s_count " row(s) affected" ;s_type=""; s_count=0; }  \
else if (match($0, /^(COMMIT)/)) {print "[Transaction total : " count " Insert(s) : " insert_count " Update(s) : " update_count " Delete(s) : " \
delete_count "] \n+----------------------+----------------------+----------------------+----------------------+"; \
count=0;insert_count=0;update_count=0; delete_count=0;s_type=""; s_count=0; flag=0} } '

示例输出

Timestamp : #150112 21:40:14 Table : `test`.`t` Query Type : INSERT 1 row(s) affected
Timestamp : #150112 21:40:14 Table : `test`.`t` Query Type : UPDATE 1 row(s) affected
Timestamp : #150112 21:40:14 Table : `test`.`t` Query Type : DELETE 1 row(s) affected
[Transaction total : 3 Insert(s) : 1 Update(s) : 1 Delete(s) : 1] 
+----------------------+----------------------+----------------------+----------------------+