Mysql, SubQuery problems -

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select rating_id, average_rating  (select rating_id, avg(rating_num) average_rating     ratings     group rating_id     having count(*) > 50)  having average_rating > 4 ;

after running query, error

every derived table must have own alias

i know section here works:

select rating_id, avg(rating_num) average_rating         ratings         group rating_id         having count(*) > 50

what doing wrong in subquery? searched , searched , searched couldn't find mistake, no matter corrected, still errors

put "as somealias" after subquery: 

select rating_id, average_rating  (select rating_id, avg(rating_num) average_rating     ratings     group rating_id     having count(*) > 50)  having average_rating > 4 ;

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