CREATE TABLE "players_selected" (
  "round" real,
  "pick" real,
  "player" text,
  "nationality" text,
  "school" text
);

Question: What is the mean pick when the play is Marc Lewis (lhp) and the round is less than 20?
SQL: SELECT AVG("pick") FROM "players_selected" WHERE "player"='marc lewis (lhp)' AND "round"<20;

Question: Which pick's player was Marc Lewis (lhp)?
SQL: SELECT "pick" FROM "players_selected" WHERE "player"='marc lewis (lhp)';

Question: Which is the biggest pick for Naperville Central High School?
SQL: SELECT MAX("pick") FROM "players_selected" WHERE "school"='naperville central high school';