sql server 某一列求和 SELECT 患者来源,设备类型,检查部位,设备名称,convert(char(10),STUDY_DATE,121) as 日期, count(distinct 就诊人次) as 就诊人次--SUM(就诊人数) AS 就诊人数 FROM dbo.[V_SeePeople] WHERE STUDY_DATE >= '2019-12-04 00:00:00.000' and STUDY_DATE <= '2019-12-11 23:59:59.000' and…
主要思路是reducing,可以像sql一样分组后多列求和处理成新对象等: select code,max(name)as name,sum(chengJi)as chengJi,sum(age)as age,sum(value)as value from student group by code 将上边sql翻译成java 后为如下代码 @Data public class Student{ public Student() { } public Student(String code, S…
foreach控制器加${__V()}函数和${__counter(TRUE,)}函数 处理sql多列结果的遍历真的是绝配啊,之前一直用循环控制器+count函数,或者while控制器加count函数真的是low到爆了 ${__V(va_${__counter(TRUE,)})}+++${__V(vb_${__counter(TRUE,)})} 刚发现了一招更好用点的,就是在foreach里面获取该控制器的index 添加一个jsr223前置处理器 int index = Integer.val…
Sql 标识列 增长1000 的解决办法: 1. Open "SQL Server Configuration Manager" 2. Click "SQL Server Services" on the left pane 3. Right-click on your SQL Server instance name on the right pane ->Default: SQL Server(MSSQLSERVER) 4. Click "Pro…