过程1:带返回值: drop procedure if exists proc_addNum; create procedure proc_addNum (in x int,in y int,out sum int) BEGIN SET sum= x + y; end然后,执行过程,out输出返回值: call proc_addNum(2,3,@sum);select @sum;过程2:不带返回值..
今天游戏和服,发现数据备份好后,导入不到目标库中,mysql -h10.66.125.733 --port 3306 -u sanda -pX12234455 --default-character-set=utf8 sanda_s10 < /data/mysql/8/user.sql返回ERROR 1044 (42000) at line 20: Access denied for user 'san..
在网上查找删除重复数据保留id最小的数据,方法如下:DELETEFROMpeopleWHEREpeopleName IN (SELECTpeopleNameFROMpeopleGROUP BYpeopleNameHAVINGcount(peopleName) > 1)AND peopleId NOT IN (SELECTmin(peopleId)FROMpeopleGROUP BYpeopleNameHAVI..
一、MMM简介:MMM即Multi-Master Replication Manager for MySQL:mysql多主复制管理器,基于perl实现,关于mysql主主复制配置的监控、故障转移和管理的一套可伸缩的脚本套件(在任何时候只有一个节点可以被写入),MMM也能对从服务器进行读负载均衡,..
详解 Mysql查询结果顺序按 in() 中ID 的顺序排列实例代码:<select id="queryGBStyleByIDs" resultMap="styleMap"> select style_num_id ,style_id,style_title,style_pic FROM gb_style where online = 1 AND is_hide = 0 and style_num_id in <fo..