CREATE TABLE "top_assister" (
  "player" text,
  "position" text,
  "league" real,
  "copa_del_rey" real,
  "champions_league" real,
  "total" real
);

Question: What is the average Champions League assists for the players with League assists under 4?
SQL: SELECT AVG("champions_league") FROM "top_assister" WHERE "league"<4;

Question: What is the most Champions League assists for those with a total of 6 and position of Midfielder?
SQL: SELECT MAX("champions_league") FROM "top_assister" WHERE "total"=6 AND "position"='midfielder';