Mysql 汇总一列中的所有值，尽管它们被另一列上的WHERE条件排除

CREATE TABLE sales (
    id int auto_increment primary key,
    customerID VARCHAR(255),
    sales_volume INT,
    sales_count VARCHAR(255)
);

INSERT INTO sales
(customerID, sales_volume, sales_count
)
VALUES 
("Customer_01", "650", "1"),
("Customer_01", "718", "2"),
("Customer_01", "130", "3"),
("Customer_01", "455", "4"),
("Customer_01", "910", "5"),
("Customer_02", "705", "1"),
("Customer_03", "560", "1"),
("Customer_03", "938", "2"),
("Customer_03", "620", "3"),
("Customer_03", "182", "4"),
("Customer_04", "260", "1"),
("Customer_04", "390", "2");

预期结果：

customerID      sum(sales_volume)
Customer_01         2863    (=650+718+130+455+910)
Customer_03         2300    (=560+938+620+182)

---

在上面的结果中，我想列出超过3次销售的所有客户，这是由列

sales\u count

定义的
因此，我在查询中使用了条件

，其中sales\u count>=3

SELECT 
customerID,
sum(sales_volume)
FROM sales
WHERE sales_count >= 3
GROUP BY 1;

根据该查询，仅列出正确的

Customer\u 01

和

Customer\u 03

但是，

sum（sales\u volume）

列中仅显示从第三次销售开始的

sum

---

我需要在查询中对

Cusomter\u 01

和

Customer\u 03

进行哪些更改，以汇总所有的销售额？

您需要一个

具有
子句，而不是
WHERE
：

SELECT 
customerID,
sum(sales_volume)
FROM sales
GROUP BY 1
HAVING MAX(sales_count) >= 3;

WHERE
子句过滤聚合前的表，而
HAVING
子句过滤聚合结果。

请参阅。

结果:

您需要一个
HAVING
子句，而不是
WHERE
：

SELECT 
customerID,
sum(sales_volume)
FROM sales
GROUP BY 1
HAVING MAX(sales_count) >= 3;

WHERE
子句过滤聚合前的表，而
HAVING
子句过滤聚合结果。

请参阅。

结果:

用于计算体积总和的内联视图方法：

SELECT 
 distinct a.customerID,
(select sum(sales_volume) from sales b where a.customerid = b.customerid group by b.customerid) sales_volume
FROM sales a
WHERE sales_count >= 3;

用于计算体积总和的内联视图方法：

SELECT 
 distinct a.customerID,
(select sum(sales_volume) from sales b where a.customerid = b.customerid group by b.customerid) sales_volume
FROM sales a
WHERE sales_count >= 3;

“由列sales\u count定义的超过3个销售。”-显然不是，您似乎想要任何销售大于等于3的客户“超过由列sales\u count定义的3个销售。”-显然不是，您似乎想要任何销售大于等于3的客户