CREATE TABLE Tryout (pID NUMBER, cName VARCHAR2, pPos VARCHAR2, decision VARCHAR2)
CREATE TABLE College (cName VARCHAR2, state VARCHAR2, enr NUMBER)
CREATE TABLE Player (pID NUMBER, pName VARCHAR2, yCard VARCHAR2, HS NUMBER)

For each position, what is the minimum time students spent practicing. Show a pie chart.
SELECT pPos, MIN(T2.HS) FROM Tryout AS T1 JOIN Player AS T2 ON T1.pID = T2.pID GROUP BY pPos
SELECT "pPos", MIN("T2"."HS") FROM "Tryout" "T1" JOIN "Player" "T2" ON "T1"."pID" = "T2"."pID" GROUP BY "pPos"