php - Mysql查询多个字段值

Question

任何人都可以根据他们的计算帮助显示多个字段的 mysql 查询。

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

现在我想要如下结果:

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

我的查询如下(到目前为止)

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

我现在不知道如何显示支付的值(value)。

感谢任何帮助。

Answer 1

尝试在 SUM 中使用和 IF

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;

这个问题有点相关:

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