DDWiki/专题/后端/2021.2.3好用的sql语句.md

```
BEGIN
SELECT SUM(power),yyyymmdd FROM powers WHERE monthweekday="HOURS" AND StartTime<=STR_TO_DATE(yyyymmdd,'%Y%m%d%H') AND EndTime>=STR_TO_DATE(yyyymmdd,'%Y%m%d%H') GROUP BY yyyymmdd;
END
```