CREATE TABLE club (clubid NUMBER, clubname CLOB, clubdesc CLOB, clublocation CLOB)
CREATE TABLE student (stuid NUMBER, lname CLOB, fname CLOB, age NUMBER, sex CLOB, major NUMBER, advisor NUMBER, city_code CLOB)
CREATE TABLE member_of_club (stuid NUMBER, clubid NUMBER, position CLOB)

How many different roles are there in the club 'Bootup Baltimore'?
SELECT COUNT(DISTINCT t2.position) FROM club AS t1 JOIN member_of_club AS t2 ON t1.clubid = t2.clubid WHERE t1.clubname = "Bootup Baltimore"
SELECT COUNT(DISTINCT "t2"."position") FROM "club" "t1" JOIN "member_of_club" "t2" ON "t1"."clubid" = "t2"."clubid" WHERE "Bootup Baltimore" = "t1"."clubname"