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問(wèn)題描述
誰(shuí)能幫我解決這個(gè)問(wèn)題.我有一張表，上面有 Products、ProductsSales.這是它們的一些屏幕截圖.
Could someone help me with this problem. I have a table with Products, ProductsSales. Here are some screenshots of them.
現(xiàn)在我想做一個(gè) TSQL 查詢(xún)，它可以對(duì)它們進(jìn)行分組并添加諸如標(biāo)題描述"之類(lèi)的內(nèi)容?類(lèi)似這樣的
Now I would like to make a TSQL query which can group them and add something like a "header description"? Something like this
如果是相對(duì)動(dòng)態(tài)的查詢(xún)就完美了.
It would be perfect, if it is a relatively dynamically query.
有人可以在這里幫助我或給我一些提示嗎?
推薦答案
我傾向于對(duì)類(lèi)別進(jìn)行逆透視，然后聚合:
I would be inclined to unpivot the categories and then aggregate:
select which, name, sum(price)
from products p cross apply
(values ('productName', productName),
('groupName', groupName),
('parentGroup', parentGroup)
) v(which, name) left join
productsales ps
on ps.productId = p.productId
group by which, name;
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