＃1111-在case语句mysql中无效使用组函数？

Question

I want to retrieve due_date from table,I have used following query but it return invalid use of group function error .What is wrong with my query?

My Query given below,

   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

Perhaps you want this. I removed your SUM() inside the case.

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