CREATE TABLE table_68571 ("Name" TEXT, "Years" TEXT, "Gender" TEXT, "Area" TEXT, "Authority" TEXT, "Decile" FLOAT, "Roll" FLOAT)

For a school with authority of state and a roll of 798, what is the decile?
SELECT "Decile" FROM table_68571 WHERE "Authority" = 'state' AND "Roll" = '798'
SELECT "Decile" FROM "table_68571" WHERE "Authority" = 'state' AND "Roll" = '798'