sql - BiqQuery - select values with max function -


i have kind of table (just example.. in case table has on 60000 records)

enter image description here

i know how make select gender rate movieid (or songid) higher rate?

i query this:

select * ( select avg(rating)as rating, movieid,'m' gender [of7.test]  gender = 'm' group movieid ) , ( select avg(rating)as rating, movieid,'f' gender [of7.test]  gender = 'f' group movieid )  order movieid

and king of result:

enter image description here

question is: there difference in ratings between genders, gender rates movies higher ratings, difference significant?

  • is there way modify query max(rate) songid/movieid , gender?

thank you

i've never used bigquery before should work:

select  movieid,         case             when f_rate >= m_rate f_rate             else m_rate         end max_rating,         case             when f_rate > m_rate 'females rated higher'             when f_rate < m_rate 'males rated higher'             else 'rated equal'         end who_rated_it_higher,         abs(f_rate - m_rate) --absolute value of difference  (     select  movieid,             avg(case when gender = 'f' rating end) f_rate,             avg(case when gender = 'm' rating end) m_rate     cte     group movieid )

if have questions or need else, let me know.


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