“pivot” table Oracle - how to change row items into columns

Question

I have the following simple example:

CREATE TABLE Cars ( Cars, Item, Value ) AS
SELECT \'bmw\',      \'wheels\', \'4\'      FROM DUAL UNION ALL
SELECT \'bmw\         


        

Answer 1

SELECT cars,
       MAX( CASE item WHEN 'color'  THEN value END ) AS color,
       MAX( CASE item WHEN 'price'  THEN value END ) AS price,
       MAX( CASE item WHEN 'wheels' THEN value END ) AS wheels
FROM   Cars
GROUP BY cars;

Outputs:

CARS     PRICE COLOR  WHEELS
-------- ----- ------ ------
lambo    7     yellow 5
mercedes 6     black  4
bmw      5     red    4