CREATE TABLE "torneo_apertura_opening_tournament" (
  "team" text,
  "points" real,
  "played" real,
  "drawn" real,
  "lost" real,
  "against" real,
  "diff" real
);

Question: What is the highest diff with drawn of 6 and play larger than 18?
SQL: SELECT MAX("diff") FROM "torneo_apertura_opening_tournament" WHERE "drawn"=6 AND "played">18;

Question: How many games were played when the loss is less than 5 and points greater than 41?
SQL: SELECT SUM("played") FROM "torneo_apertura_opening_tournament" WHERE "lost"<5 AND "points">41;