CREATE TABLE table_20039 ("Position" FLOAT, "Team" TEXT, "Points" FLOAT, "Played" FLOAT, "Won" FLOAT, "Drawn" FLOAT, "Lost" FLOAT, "For" FLOAT, "Against" FLOAT, "Difference" TEXT)

What is the highest number won when the number of points is 31?
SELECT MAX("Won") FROM table_20039 WHERE "Points" = '31'
SELECT MAX("Won") FROM "table_20039" WHERE "Points" = '31'