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 "2-12012851-1" WHERE "Player" = 'marc lewis (lhp)' AND "Round" < 20.0;

Question: Which pick's player was Marc Lewis (LHP)?
SQL: SELECT "Pick" FROM "2-12012851-1" WHERE "Player" = 'Marc Lewis (LHP)';

Question: Which is the biggest pick for Naperville Central High School?
SQL: SELECT MAX("Pick") FROM "2-12012851-1" WHERE "School" = 'Naperville Central High School';