SQL select by desc

Question

這裏是我的sql查詢我只是想要我的salePrice從銷售表中降序 需要幫助提前致謝。

例如

SELECT salesMan.salesmanID, salesMan.name, SUM(sale.sellingPrice) 
FROM salesMan 
INNER JOIN sale ON salesMan.salesmanID = sale.salesManID 
GROUP BY salesmanID, name; 

Answer 1

然後加：

order by SUM(sale.sellingPrice) desc 

Answer 2

別名添加到SUM列，並用它來訂購您的結果集。

Select salesMan.salesmanID,salesMan.name, SUM(sale.sellingPrice) as sellingPriceSum 
FROM salesMan INNER JOIN 
    sale 
    ON salesMan.salesmanID = sale.salesManID 
GROUP BY salesmanID,name 
ORDER BY sellingPriceSum desc; 

Answer 3

這應該工作：

Select salesMan.salesmanID, salesMan.name, SUM(sale.sellingPrice) AS totalSale 
FROM salesMan INNER JOIN 
    sale 
    ON salesMan.salesmanID = sale.salesManID 
GROUP BY salesmanID, name 
ORDER BY totalSale DESC; 

可以簡化像這樣的查詢：

SELECT sm.salesmanID, sm.name, SUM(s.sellingPrice) AS totalSale 
FROM salesMan sm 
INNER JOIN sale s ON sm.salesmanID = s.salesManID 
GROUP BY sm.salesmanID, sm.name 
ORDER BY totalSale DESC;