Mysql查询多个字段值

Question

任何人都可以帮助MySQL查询显示基于他们的计算多个字段。

，我有以下数据：

ID | Supplier | Total | Tax | Shipping | Paid 
1 | 2  | 100 | 10 | 5  | 0 
2 | 2  | 50 | 5 | 2.5  | 1 

现在我要像下面这样的结果：如下（迄今为止）

Supplier | Total Paid | Total Unpaid 
2  | 57.5  | 115 

我查询

SELECT suppliers.company, SUM(tax+shipping+total) as unpaid FROM poreceived LEFT JOIN suppliers ON suppliers.id = poreceived.supplierid WHERE paid = '0' GROUP BY supplierid 

我不现在如何显示付费价值。

任何帮助表示赞赏。

Answer 1

SELECT 
    supplierid, 
    SUM(if(paid=1, total + tax + shipping, 0)) AS Paid, 
    SUM(if(paid=0, total + tax + shipping, 0)) AS Unpaid 
FROM poreceived 
GROUP BY supplierid 

OR

SELECT 
    supplierid, 
    total_paid + shipping_paid + tax_paid as Paid, 
    amount - total_paid - shipping_paid - tax_paid as Unpaid 
FROM (
    SELECT 
     supplierid 
     total + tax + shipping AS amount, 
     SUM(if(paid=1,total,0)) AS total_paid, 
     SUM(if(paid=1,shipping,0)) AS shipping_paid, 
     SUM(if(paid=1,tax,0)) AS tax_paid 
    FROM poreceived 
    GROUP BY supplierid 
) t 

Answer 2

尝试使用和IF总和内

SELECT 
t.supplier, 
SUM(IF(t.paid = 1, t.tax + t.shipping + t.total, 0)) AS total_paid, 
SUM(IF(t.paid = 0, t.tax + t.shipping + t.total, 0)) AS total_unpaid 
FROM poreceived AS t 
GROUP BY t.supplier; 

这个问题是相关的位：

MySql: is it possibile to 'SUM IF' or to 'COUNT IF'?

Answer 3

您可以使用数据透视查询来获取您想要的输出：

SELECT Supplier, 
    SUM(CASE WHEN Paid = 1 THEN Total + Tax + Shipping ELSE 0 END) AS `Total Paid`, 
    SUM(CASE WHEN Paid = 0 THEN Total + Tax + Shipping ELSE 0 END) AS `Total Unpaid`, 
FROM poreceived 
GROUP BY Supplier