每周查找总计

Question

我有一个包含table和date列的表total。

如何将过去20周内每周sum列的total汇总到sysdate？

Answer 1

SELECT *, CONCAT(YEAR(`sysdate`), '/', WEEK(`sysdate`)) AS `year_week`
FROM `table`
GROUP BY `year_week`
ORDER BY `year_week` DESC
LIMIT 20;

Answer 2

select trunc(date,'D'), sum(total)
from table
where date >= trunc(sysdate - 20*7, 'D')
group by trunc(date,'D')
order by 1