使用 1 个查询获取 2 个查询的结果

Question

I have 2 following queries in the same table transactions .

transactions table has following 2 columns which is relevant here, registrationId , total and totalPaid .

To get all the paid transactions I run following query

Select SUM(transactions.totalPaid) as netPaid from transactions where deleted is null group by registrationId

To get all the unpaid transactions I run the following query

Select SUM(transactions.total - transactions.totalPaid) as unPaid from transactions where ((totalPaid < total) OR (total < 0)) and deleted is null group by registrationId

How can I combine the query and get both result in one go?

Thank you

Answer 1

You can use case statement to the the unPaid column.

Select sum(transactions.totalPaid) as netPaid
    , sum(case when (totalPaid < total) OR (total < 0) then transactions.total - transactions.totalPaid else 0 end) as unPaid
from transactions 
where deleted is null 
group by registrationId