Pivote Oracle10g SQL

Prefiero usar la solución GROUP BY con la expresión CASE.

SELECT 
    id,
    MAX(CASE WHEN emailRank = 1 THEN email END) AS [1],
    MAX(CASE WHEN emailRank = 2 THEN email END) AS [2],
    MAX(CASE WHEN emailRank = 3 THEN email END) AS [3],
    MAX(CASE WHEN emailRank = 4 THEN email END) AS [4]
FROM (
    SELECT
        id, 
        email, 
        ROW_NUMBER() OVER (PARTITION BY id ORDER BY email) AS emailRank
    FROM TABLE
)
GROUP BY id;

El ejemplo original de Pivot tenía tipo y faltaba ")". Prueba lo siguiente para que el pivote funcione:

pivot( max(email) FOR emailRank IN (1,2,3));