Question

I have a SQL that returns a cnt1 and cnt2 for each Event_ID, while testing a condition for column “POSA”

this returns the following as desired:

Event_ID | CNT1 | CNT2

I would like to add another condition to each CASE statement that tests if another column “S” in the same table is distinct. Below is the code snippet:

SELECT Event_ID, 
 sum  
 (CASE WHEN POSA IN ('SX', 'DX')  THEN 1 
    ELSE 0 
 END) 
 AS cnt1,
sum 
(CASE  
    WHEN POSA IN ('SP', 'DP')  THEN 1 
    ELSE 0 
 END) AS cnt2


FROM Station_Processed_Info GROUP BY EVENT_ID;

Answer 1

SELECT Event_ID,   
SUM(CASE 
   WHEN POSA IN ('SX', 'DX')  THEN 1
   WHEN DISTINCT("S") THEN something 
    ELSE 0   END)   AS cnt1, 
SUM (CASE  
    WHEN POSA IN ('SP', 'DP')  THEN 1
    WHEN DISTINCT("S") THEN something 
    ELSE 0   END) AS cnt2    
FROM Station_Processed_Info GROUP BY EVENT_ID;