Question

我的查询：

select  distinct a.city, 
        (
            select count(*) 
            from sales_flat_order 
            where a.email=b.customer_email 
            group by a.city
        ) as 'lora' 
from sales_flat_order_address a, sales_flat_order b 
group by a.city

结果：

City1 : 15
City2: (NULL)

预期结果：

City1 : 13
City2: 2

Answer 1

select a.city, count(*) as 'lora' 
from sales_flat_order_address a
        INNER JOIN sales_flat_order b 
            ON a.email=b.customer_email 
group by a.city

Answer 2

SELECT count(sfoa.city) as count_of_city, sfoa.city 
FROM sales_flat_order as sfo 
LEFT JOIN sales_flat_order_address as sfoa ON sfo.entity_id=sfoa.parent_id 
WHERE sfoa.address_type="shipping" 
GROUP BY sfoa.city;

这是你要找的（为magento 1.5设计）？

修改需要有一个地址类型的过滤器，因为每个订单都有一个账单和送货地址。

Answer 3

select count(*) from sales_flat_order where a.email=b.customer_email group by a.city

可以返回多行。它不能在SELECT子句中用作查询字段，除非EMAIL字段具有一些唯一索引，例如此外，从ANSI SQL的角度来看，它包含语法错误。 GROUP BY子句在这里是冗余的

Answer 4

在no where子句中出现问题似乎是绑定sales_flat_order_address a和sales_flat_order b

按城市排序的计数

4 个答案: