Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE club (clubid VARCHAR, clubname VARCHAR)
TABLE: CREATE TABLE member_of_club (position VARCHAR, clubid VARCHAR)

### Question ###
How many different roles are there in the club "Bootup Baltimore"?

### Accurate SQL ###

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"