CREATE TABLE table_name_70 (decile INT, roll VARCHAR, area VARCHAR)

Name the highest Decile for roll more than 325 and area of warkworth
SELECT MAX(decile) FROM table_name_70 WHERE roll > 325 AND area = "warkworth"
SELECT MAX("decile") FROM "table_name_70" WHERE "area" = "warkworth" AND "roll" > 325