Du kan beregne totalen (og ud fra det den ønskede procentdel) ved at bruge en underforespørgsel i FROM-sætningen:
SELECT Name,
SUM(Value) AS "SUM(VALUE)",
SUM(Value) / totals.total AS "% of Total"
FROM table1,
(
SELECT Name,
SUM(Value) AS total
FROM table1
GROUP BY Name
) AS totals
WHERE table1.Name = totals.Name
AND Year BETWEEN 2000 AND 2001
GROUP BY Name;
Bemærk, at underforespørgslen ikke har WHERE-sætningen, der filtrerer årene.