在“ case”表达式中使用“ in”语句

Question

How can I use IN in my "case expression"?

This is my query where I want count if any match like mumbai found then as mumbai :

 select TYPEOFPRODUCT,
        SUM(CASE(BRANCH) WHEN IN('Mumbai1' OR 'Mumbai2') THEN 1 ELSE 0 END) AS 'Mumbai'
        SUM(CASE(BRANCH) WHEN IN('Delhi1' OR 'DelhiMain') THEN 1 ELSE 0 END) AS 'Delhi'
from los_ext  
group by TYPEOFPRODUCT

Answer 1

You were close, you just need to comma separate values for IN rather than using OR , and there are two formats for CASE expressions, putting the field with the criteria after WHEN is more flexible, so I prefer to use it exclusively:

SELECT TYPEOFPRODUCT
      ,SUM( CASE WHEN BRANCH IN('Mumbai1','Mumbai2') THEN 1 ELSE 0 END) AS Mumbai
      ,SUM( CASE WHEN BRANCH IN('Delhi1', 'DelhiMain') THEN 1 ELSE 0 END) AS Delhi
FROM los_ext  
GROUP BY TYPEOFPRODUCT

Answer 2

Its query select sum of individual branchs

select TYPEOFPRODUCT,
SUM(CASE WHEN (BRANCH = 'Mumbai1' OR BRANCH = 'Mumbai2' ) THEN 1 ELSE 0 END) AS 'Mumbai',
SUM(CASE WHEN (BRANCH = 'Delhi1' OR BRANCH = 'DelhiMain' )  THEN 1 ELSE 0 END) AS 'Delhi'
from los_ext  
group by TYPEOFPRODUCT