php - #1111 - 在 case 语句 mysql 中组函数的使用无效？

Question

我想从表中检索 due_date，我使用了以下查询，但它返回了 invalid use of group function 错误。我的查询有什么问题？

我的查询如下，

   select 
sum(
    case when invoices.due_date LIKE '2015-05-10%' 
        then sum(invoice_items.quantity*invoice_items.rate)-sum(IFNULL(payments.amount,0))
    end
    )as 1day, 
sum( 
    case when invoices.due_date LIKE '2015-05-09%' 
        then sum(invoice_items.quantity*invoice_items.rate)-     sum(IFNULL(payments.amount,0))
    end
    )as yesterday 
        from `invoices`
        inner join `invoice_items` on `invoice_items`.`invoice_id` = `invoices`.`id` 
        left join `payments` on `payments`.`invoice_id` = `invoices`.`id` 
        where `invoices`.`deleted_at` is null

Answer 1

也许你想要这个。我把你的 SUM() 放在盒子里了。

select 
sum(
    case when invoices.due_date LIKE '2015-05-10%' 
        then (invoice_items.quantity*invoice_items.rate)-(IFNULL(payments.amount,0))
    end
    )as 1day, 
sum( 
    case when invoices.due_date LIKE '2015-05-09%' 
        then (invoice_items.quantity*invoice_items.rate)-     (IFNULL(payments.amount,0))
    end
    )as yesterday