How many artists have Bangla songs?
select count(distinct artist_name) from song where languages = 'bangla'
How about English?
select count(distinct artist_name) from song where languages = 'bangla'
What are the names of them?
select artist_name from song where languages = "english"
Which of them have never received rating higher than 8.
select distinct artist_name from song where languages = "english" except select distinct artist_name from song where rating > 8