How to Use If statement inside select in oracle 12c

Question

Unable to use if statement inside Select in Oracle 12c

SELECT if(2 * 5 = 10, '1', null) AS a 
  FROM DUAL;

Answer 1

Try using case :

 SELECT CASE 
          WHEN 2 * 5 = 10 THEN '1' -- put the right condition here
          ELSE null
        END AS a 
   FROM DUAL;

Another possibility is Decode :

 SELECT Decode(2 * 5, 10, '1', null) AS a
   FROM DUAL; 

Please, note that IF ... THEN ... ELSE ... END IF syntax is PL/SQL , not SQL one.