﻿ SQL exercises on movie Database: Find the director of a movie that cast a role as Sean Maguire - w3resource

# SQL exercises on movie Database: Find the name of movie and director who directed a movie that casted a role as Sean Maguire

## SQL movie Database: Join Exercise-4 with Solution

4. From the following tables, write a SQL query to find the director of a movie that cast a role as Sean Maguire. Return director first name, last name and movie title.

Sample table: director
``` dir_id |      dir_fname       |      dir_lname
--------+----------------------+----------------------
201 | Alfred               | Hitchcock
202 | Jack                 | Clayton
203 | David                | Lean
204 | Michael              | Cimino
205 | Milos                | Forman
206 | Ridley               | Scott
207 | Stanley              | Kubrick
208 | Bryan                | Singer
209 | Roman                | Polanski
210 | Paul                 | Thomas Anderson
211 | Woody                | Allen
212 | Hayao                | Miyazaki
213 | Frank                | Darabont
214 | Sam                  | Mendes
215 | James                | Cameron
216 | Gus                  | Van Sant
217 | John                 | Boorman
218 | Danny                | Boyle
219 | Christopher          | Nolan
220 | Richard              | Kelly
221 | Kevin                | Spacey
222 | Andrei               | Tarkovsky
223 | Peter                | Jackson
```
Sample table: movie_direction
``` dir_id | mov_id
--------+--------
201 |    901
202 |    902
203 |    903
204 |    904
205 |    905
206 |    906
207 |    907
208 |    908
209 |    909
210 |    910
211 |    911
212 |    912
213 |    913
214 |    914
215 |    915
216 |    916
217 |    917
218 |    918
219 |    919
220 |    920
218 |    921
215 |    922
221 |    923
```

Sample table: movie_cast
``` act_id | mov_id |              role
--------+--------+--------------------------------
101 |    901 | John Scottie Ferguson
102 |    902 | Miss Giddens
103 |    903 | T.E. Lawrence
104 |    904 | Michael
105 |    905 | Antonio Salieri
106 |    906 | Rick Deckard
107 |    907 | Alice Harford
108 |    908 | McManus
110 |    910 | Eddie Adams
111 |    911 | Alvy Singer
112 |    912 | San
113 |    913 | Andy Dufresne
114 |    914 | Lester Burnham
115 |    915 | Rose DeWitt Bukater
116 |    916 | Sean Maguire
117 |    917 | Ed
118 |    918 | Renton
120 |    920 | Elizabeth Darko
121 |    921 | Older Jamal
122 |    922 | Ripley
114 |    923 | Bobby Darin
109 |    909 | J.J. Gittes
119 |    919 | Alfred Borden
```
Sample table: movie
``` mov_id |                     mov_title                      | mov_year | mov_time |    mov_lang     | mov_dt_rel | mov_rel_country
--------+----------------------------------------------------+----------+----------+-----------------+------------+-----------------
901 | Vertigo                                            |     1958 |      128 | English         | 1958-08-24 | UK
902 | The Innocents                                      |     1961 |      100 | English         | 1962-02-19 | SW
903 | Lawrence of Arabia                                 |     1962 |      216 | English         | 1962-12-11 | UK
904 | The Deer Hunter                                    |     1978 |      183 | English         | 1979-03-08 | UK
905 | Amadeus                                            |     1984 |      160 | English         | 1985-01-07 | UK
906 | Blade Runner                                       |     1982 |      117 | English         | 1982-09-09 | UK
907 | Eyes Wide Shut                                     |     1999 |      159 | English         |            | UK
908 | The Usual Suspects                                 |     1995 |      106 | English         | 1995-08-25 | UK
909 | Chinatown                                          |     1974 |      130 | English         | 1974-08-09 | UK
910 | Boogie Nights                                      |     1997 |      155 | English         | 1998-02-16 | UK
911 | Annie Hall                                         |     1977 |       93 | English         | 1977-04-20 | USA
912 | Princess Mononoke                                  |     1997 |      134 | Japanese        | 2001-10-19 | UK
913 | The Shawshank Redemption                           |     1994 |      142 | English         | 1995-02-17 | UK
914 | American Beauty                                    |     1999 |      122 | English         |            | UK
915 | Titanic                                            |     1997 |      194 | English         | 1998-01-23 | UK
916 | Good Will Hunting                                  |     1997 |      126 | English         | 1998-06-03 | UK
917 | Deliverance                                        |     1972 |      109 | English         | 1982-10-05 | UK
918 | Trainspotting                                      |     1996 |       94 | English         | 1996-02-23 | UK
919 | The Prestige                                       |     2006 |      130 | English         | 2006-11-10 | UK
920 | Donnie Darko                                       |     2001 |      113 | English         |            | UK
921 | Slumdog Millionaire                                |     2008 |      120 | English         | 2009-01-09 | UK
922 | Aliens                                             |     1986 |      137 | English         | 1986-08-29 | UK
923 | Beyond the Sea                                     |     2004 |      118 | English         | 2004-11-26 | UK
924 | Avatar                                             |     2009 |      162 | English         | 2009-12-17 | UK
926 | Seven Samurai                                      |     1954 |      207 | Japanese        | 1954-04-26 | JP
927 | Spirited Away                                      |     2001 |      125 | Japanese        | 2003-09-12 | UK
928 | Back to the Future                                 |     1985 |      116 | English         | 1985-12-04 | UK
925 | Braveheart                                         |     1995 |      178 | English         | 1995-09-08 | UK
```

Sample Solution:

``````-- Selecting director first names, last names, and movie titles
-- Using the 'director' table
SELECT dir_fname, dir_lname, mov_title
FROM director
-- Joining with 'movie_direction' using explicit ON clause to link directors with movies
JOIN movie_direction ON director.dir_id = movie_direction.dir_id
-- Further joining with 'movie' using explicit ON clause to get additional movie details
JOIN movie ON movie_direction.mov_id = movie.mov_id
-- Completing the join with 'movie_cast' to associate roles with the movies
JOIN movie_cast ON movie_cast.mov_id = movie.mov_id
-- Filtering for rows where the role is 'Sean Maguire'
WHERE role = 'Sean Maguire';
``````

Sample Output:

```      dir_fname       |      dir_lname       |                     mov_title
----------------------+----------------------+----------------------------------------------------
Gus                  | Van Sant             | Good Will Hunting
(1 row)
```

Code Explanation:

The said query in SQL that retrieves the first name and last name of the director, as well as the title of the movie, and returns only the rows where the role is "Sean Maguire".
The JOIN clauses connect the four tables together using their primary and foreign keys. This links the director and movie_direction tables by their director IDs, the movie_direction and movie tables by their movie IDs, and the movie_cast and movie tables by their movie IDs.
The WHERE clause filters the results to only include rows where the role column in movie_cast is "Sean Maguire".

Alternative Solutions:

Using WHERE clause explicitly:

``````
SELECT dir_fname, dir_lname, mov_title
FROM  director, movie_direction, movie, movie_cast
WHERE director.dir_id=movie_direction.dir_id
AND movie_direction.mov_id=movie.mov_id
AND movie.mov_id=movie_cast.mov_id
AND movie_cast.role='Sean Maguire';
``````

Explanation:

This SQL query uses a series of inner joins between the director, movie_direction, movie, and movie_cast tables using their respective IDs. The conditions ensure that the relationships between these tables are satisfied. Finally, the query filters the results by specifying that the role must be 'Sean Maguire'.

Using WHERE Clause with Table Aliases:

``````
SELECT d.dir_fname, d.dir_lname, m.mov_title
FROM director d, movie_direction md, movie m, movie_cast mc
WHERE d.dir_id = md.dir_id
AND md.mov_id = m.mov_id
AND m.mov_id = mc.mov_id
AND mc.role = 'Sean Maguire';
``````

Explanation:

This query uses the older comma-separated syntax for joining tables and specifies the join conditions in the WHERE clause. It then applies a WHERE clause to filter for roles where the character is 'Sean Maguire' and selects the director's first name, last name, and the movie title.

Relational Algebra Expression:

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## Query Visualization for alternate Sample Solution:

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