sqlzoo--More JOIN operations

• sqlzoo–select basics,select from world

• sqlzoo–select from nobel ,select in select

• sqlzoo–sum and count

• sqlzoo–the join operation

• sqlzoo–More JOIN operations

• sqlzoo–using null

• sqlzoo–self join

More JOIN operations

movie电影（id编号,title电影名称,yr首映年份,director导演,budget预算,gross票房)

actor(id编号,name姓名)

casting(movieid电影编号,actorid演员编号,ord角色次序)

1. 列出1962年首映的电影，显示其id,title

   SELECT  id,title
    FROM movie
    WHERE yr=1962;
   

2. 电影citizen kane 的首映年份

   select yr from movie
   where title = 'Citizen Kane';
   

3. 列出所有star trek星空奇遇系列的电影，包括id,title,yr.按年份顺序排列

   select id,title,yr from movie 
   where title like 'Star Trek%' 
   order by yr;
   

4. id是11768，11955，21191的电影是什么名称？

   select title from movie
   where id in (11768,11955,21191);
   

5. 女演员Glenn Close的编号id是什么

   select id from actor 
   where name = 'Glenn Close';
   

6. 电影Casablanca的编号id

   select id from movie 
   where title = 'Casablanca';
   

7. 列出电影Casablanca的演员名单

   select name from actor 
   join casting on id = actorid 
   where movieid = 11768;
   

8. 显示电影类型Alien的演员清单

   select name from actor 
   where id in(
   select actorid from movie 
   join casting on id = movieid
   where title like 'Alien');
   

9. 列出演员Harrison Ford曾出演的电影

   select title from movie
   where id in (
   select movieid from casting
   join actor on actorid = id
   where name = 'Harrison Ford');
   

10. 列出演员Harrison Ford曾演出的电影，但不是第一主角。

    select title from movie 
    where id in (
    select movieid from casting join 
    actor on actorid = id where ord != 1
    and name = 'Harrison Ford');
    
    

11. 列出1962年首映的电影及其第一主角

    select m.title,a.name from movie m
    join casting c on m.id = c.movieid 
    join actor a on c.actorid = a.id
    where c.ord = 1 and yr = 1962;
    

12. john travolta 最忙的年份，显示年份和该年的电影数目。

    方式一：

    SELECT yr,COUNT(title) FROM
      movie m JOIN casting c ON m.id = c.movieid
             JOIN actor a ON c.actorid = a.id
    where name = 'John Travolta'
    GROUP BY yr
    HAVING COUNT(title)=(SELECT MAX(c) FROM
    (SELECT yr,COUNT(title) AS c 
    FROM movie 
    JOIN casting ON movie.id=movieid
    JOIN actor   ON actorid=actor.id
     where name='John Travolta'
     GROUP BY yr) AS t
    )
    

    方式二：

    SELECT yr,COUNT(title) FROM
      movie m JOIN casting c ON m.id = c.movieid
             JOIN actor a ON c.actorid = a.id
    where name = 'John Travolta'
    GROUP BY yr
    order by count(title) DESC limit 1;
    

13. 列出演员Julie Andrews曾参演的电影名称及其第一主角。

    select title,name from movie m
    join casting c on m.id = c.movieid
    join actor a on c.actorid = a.id
    where movieid in (SELECT movieid FROM casting
    WHERE actorid IN (
      SELECT id FROM actor
      WHERE name='Julie Andrews'))
      and ord = 1;
    

14. 按字母顺序列出哪一演员曾做过30次第一主角。

    select distinct(name) from actor a
    join casting c on a.id = c.actorid
    join movie m on c.movieid = m.id
    where c.actorid in (
    select actorid from casting c
    where ord = 1 
    group by actorid
    having count(ord) >= 30);
    

15. 列出1978年首映的电影名称及角色数目，按照数目由多到少排序。

    select title,count(actorid) from movie m
    join casting c on c.movieid=m.id
    join actor a on c.actorid=a.id
    where yr=1978
    group by title
    order by count(actorid) desc,title;
    

    (这一题sqlzoo提交会报错，但得出的结果是符合题目的，具体报错原因暂不知，个人觉得是title顺序的问题，望知道错误原因的同学告知。)

16. 列出曾与Art Garfunkel合作过的演员姓名。

    select name from actor a
    join casting c on a.id = c.actorid
    join movie m on m.id = c.movieid
    where name != 'Art Garfunkel' 
    and m.id in (
    select movieid from casting c 
    join movie m on m.id = c.movieid
    join actor a on c.actorid = a.id
    where a.name = 'Art Garfunkel');