本节我们将执行一些简单的SQL查询对电影数据进行分析
查询表中数据总量:
select count(*) from imdb.title;
select count(*) from imdb.title_basics;
统计电影的语言列表:
select distinct language from imdb.title order by language;
统计最大、最小、平均时长:
select max(runtimeminutes), min(runtimeminutes), avg(runtimeminutes), count(*) from imdb.title_basics;
执行join查询:
select
title.title,
title.language,
title_basics.primarytitle,
title_basics.startyear,
title_basics.genres
from imdb.title
join imdb.title_basics on title.titleid = title_basics.tconst
where title.language = 'en' limit 100;