Question

i have a questions database of the shape

ID , Question , Answer1 , Answer2 , Answer3 , Answer4 , True

where “True” is the index of the correct answer:

True = 0 --> Answer1
....
True = 3 --> Answer4

i need to select only the question and the correct answer, this is what i got so far:

SELECT Question , 'Answer' || (True+1) From Questions

but it returns the question and ‘answer1’ or ‘answer2’ … ie: the name of the column i need not it’s value

Answer 1

you can use CASE in MySQL.

SELECT  Question,
        CASE True
            WHEN 0 THEN Answer1
            WHEN 1 THEN Answer2
            WHEN 2 THEN Answer3
            WHEN 3 THEN Answer4
        END AS Answer
FROM    tableName

OR

SELECT  Question,
        CASE 
            WHEN TRUE = 0 THEN Answer1
            WHEN TRUE = 1 THEN Answer2
            WHEN TRUE = 2 THEN Answer3
            WHEN TRUE = 3 THEN Answer4
        END AS Answer
FROM    tableName