Using a CASE statement in HQL select

Question

Is there any way to do the following in HQL:

SELECT 
    case when flag = true then SUM(col1) else SUM(col2)
FROM 
    myTable

Answer 1

I facing the same problem in HQL then I solved the following query is

select CONCAT(event.address1,', ', CASE WHEN event.address2 IS NULL THEN '' ELSE concat(event.address2,', ') END, event.city from EventDetail event where event.startDate>=:startDate and event.endDate<=:endDate;