CREATE TABLE table_15245 ("Name" CLOB, "Years" CLOB, "Area" CLOB, "Authority" CLOB, "Decile" FLOAT, "Roll" FLOAT)

What is the roll of the school in Oakura?
SELECT SUM("Roll") FROM table_15245 WHERE "Area" = 'oakura'
SELECT SUM("Roll") FROM "table_15245" WHERE "Area" = 'oakura'