请教sql求和 数据库里有value字段,他的值有正数也有负数,我想用sql语句求出正数与正数的合,负数与负数的和 用case语句怎么写 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 select 正数和=sum(case when value>0 then value else 0 end), 负数和=sum(case when value<0 then value else 0 end)from tb select sum(case when value>0 then Valu end), sum(case when value<0 then Valu end)from tb selectcase when a>=0 then '正数和0' else '负数' end, sum(value) from tb group by case when a>=0 then '正数和0' else '负数' end selectcase when [value]>=0 then '正数和0' else '负数' end, sum([value]) from tb group by case when [value]>=0 then '正数和0' else '负数' end select sum(case when value>=0 then value else 0 end), sum(case when value<0 then value else 0 end)from tb select sum(case when value > 0 then value else 0 end) sum(case wher value <= then value else 0 end)from tb select sum(case when value>=0 then value else 0 end), sum(case when value<0 then value else 0 end)from tb update 问题,如何更新一个字段自增 如何创建触发器 字符串连接! 请看一下这个触发器哪儿不对!!! 「急!!」 【100分请指点】如何对csv文件分批导入到sql 请问这个对列进行了操作的sql有更好的写法吗 sql函数问题 update 子查询报错! 各位高手,制作用VFP做的软件的安装程序,不知用什么比较好?比较正规? 获取用户数据库 帮忙看一下我的语句那里错了? 调试存储过程一般用什么工具
负数和=sum(case when value<0 then value else 0 end)
from tb
sum(case when value<0 then Valu end)
from tb
case when a>=0 then '正数和0' else '负数' end,
sum(value)
from tb
group by
case when a>=0 then '正数和0' else '负数' end
case when [value]>=0 then '正数和0' else '负数' end,
sum([value])
from tb
group by
case when [value]>=0 then '正数和0' else '负数' end
select sum(case when value>=0 then value else 0 end),
sum(case when value<0 then value else 0 end)
from tb
sum(case wher value <= then value else 0 end)
from tb
sum(case when value<0 then value else 0 end)
from tb