17,113
社区成员
![](https://csdnimg.cn/release/cmsfe/public/img/topic.427195d5.png)
![](https://csdnimg.cn/release/cmsfe/public/img/me.40a70ab0.png)
![](https://csdnimg.cn/release/cmsfe/public/img/task.87b52881.png)
![](https://csdnimg.cn/release/cmsfe/public/img/share-circle.3e0b7822.png)
SELECT SUM(CASE WHEN CITY_NAME='市场' AND ACCT_DATE=TO_CHAR(SYSDATE-1,'YYYYMMDD') THEN DEV_NUM END) as A,
SUM(CASE WHEN CITY_NAME='市场' AND ACCT_DATE=TO_CHAR(SYSDATE-2,'YYYYMMDD') THEN DEV_NUM END) AS b
FROM TABLE_A
显示结果如下:
但是,下图中为什么不是预期的结果1呢?求大佬拔刀相助