[英]How to sort & group by sql query?
我有资料
id Date CatId itemid itemname price
1 10/5/2019 1 1 ABC 20
2 10/5/2019 1 2 XYZ 30
3 10/5/2019 2 1 ABC 20
4 10/5/2019 3 1 ABC 20
5 11/5/2019 1 2 XYZ 30
6 11/5/2019 2 1 ABC 20
7 11/5/2019 2 3 PQR 40
8 12/5/2019 3 1 ABC 20
9 12/5/2019 3 2 XYZ 30
10 12/5/2019 1 2 XYZ 30
11 12/5/2019 2 1 ABC 20
预期结果数据
date CatId toal
10/5/2019 1 50
10/5/2019 2 20
10/5/2019 3 20
11/5/2019 1 30
11/5/2019 2 60
12/5/2019 1 30
12/5/2019 2 20
12/5/2019 3 50
我想要按日期排列结果顺序,然后按价格分组计算价格总和,
我已尝试应用多个查询,但获得了确切的解决方案。 我花了很多时间。
我已经尝试过以下查询
SELECT * FROM (SELECT * FROM `table` ORDER BY `date` DESC) as tbl
GROUP BY tbl.`catid`
SELECT *
FROM `table`
GROUP BY `date` ORDER BY `date` DESC
SELECT *
FROM (
SELECT * FROM `table`
ORDER BY `date` DESC
) AS sub
GROUP BY `catid` ORDER BY `date` DESC
您可以使用的排序依据和分组依据的列可以不同
您可以使用分组依据并直接求和
select date, catid, sum(price)
from my_table
group by date, catid
order by date, sum(price), catid
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