CREATE TABLE "table1_15017024_2" (
  "rnd" real,
  "pick" real,
  "player_name" text,
  "position" text,
  "college" text,
  "height" text,
  "weight" text
);

Question: How many colleges did the player picked 57 attend?
SQL: SELECT COUNT("college") FROM "table1_15017024_2" WHERE "pick"=57;

Question: How many heights does chad henne have?
SQL: SELECT COUNT("height") FROM "table1_15017024_2" WHERE "player_name"='Chad Henne';