Table: us_nhl_hockey_players
Columns: position
jersey
name
height_cm
weight_kg
birthdate
birthplace
2002_2003_team
nhl_rights_if_any

Question: What is that if the weight for the play born on June 2, 1983?
SQL: SELECT SUM("weight_kg") FROM us_nhl_hockey_players WHERE "birthdate" = 'june 2, 1983'

Question: What was the highest weight in kg for F Position, Jersey #12?
SQL: SELECT MAX("weight_kg") FROM us_nhl_hockey_players WHERE "position" = 'f' AND "jersey" = 12

Question: Which player is the NHL right, who was born in Downers Grove, Illinois?
SQL: SELECT "nhl_rights_if_any" FROM us_nhl_hockey_players WHERE "birthplace" = 'downers grove, illinois'