SELECT count(DISTINCT PROF_NUM) FROM CLASS WHERE CRS_CODE  =  "ACCT-211"
How many professors teach a class with the code ACCT-211?
SELECT count ( DISTINCT PROF_NUM ) FROM CLASS WHERE CRS_CODE = `` ACCT-211 ''
select count ( distinct prof_num ) from class where crs_code = value
How many professors teach a class with the code ACCT-211 ?