Question

I have following table structure (Table Name is Questions)

c1   c2   c3  Selection

X    Y    Z   2

A    B    C   3

Here c1,c2,c3 and Selection are column names. I want to retrieve value of c1 or c2 or c3 on the basis of value of column Selection.
Eg. If Selection value is 2 then I want corresponding value of c2 column i.e. Y.
If Selection value is 3 then it should select value of c3 column which is C here.

Please help me in forming Select Sql query here. I tried myself but was not able to find correct solution.

Thanks in advance

Answer 1

SELECT  CASE Selection
            WHEN 1 THEN c1
            WHEN 2 THEN c2
            ELSE c3
        END val
FROM    tableName