CREATE TABLE "washington_redskins_draft_history" (
  "round" real,
  "pick" real,
  "overall" real,
  "name" text,
  "position" text,
  "college" text
);

Question: How many times is the postion S?
SQL: SELECT COUNT("overall") FROM "washington_redskins_draft_history" WHERE "position"='s';

Question: how many times is the name Derek Smith when the round is higher than 3?
SQL: SELECT COUNT("overall") FROM "washington_redskins_draft_history" WHERE "name"='derek smith' AND "round">3;

Question: what is the lowest overall when the pick is 20?
SQL: SELECT MIN("overall") FROM "washington_redskins_draft_history" WHERE "pick"=20;

Question: what is the highest round when the overall is less than 17?
SQL: SELECT MAX("round") FROM "washington_redskins_draft_history" WHERE "overall"<17;