What is the highest W of the 0 L?
CREATE TABLE "standings" (
  "skip_club" text,
  "w" real,
  "l" real,
  "pf" real,
  "pa" real,
  "ends_won" real,
  "ends_lost" real,
  "blank_ends" real,
  "stolen_ends" real
);
SELECT MAX("w") FROM "standings" WHERE "l"=0;