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SQL Journey: Blog #9

Challenge: Famous People

Instructions:

In this project, you’re going to make your own table with some small set of “famous people”, then make more tables about things they do and join those to create nice human-readable lists.

For example, here are types of famous people and the questions your data could answer:

  • Movie stars: What movies are they in? Are they married to each other?
  • Singers: What songs did they write? Where are they from?
  • Authors: What books did they write?
  • Fictional characters: How are they related to other characters? What books do they show up in?

Created Tables:

/* Create table about the people and what they do here */

CREATE TABLE famous_people (id INTEGER PRIMARY KEY AUTOINCREMENT, first_name TEXT, last_name TEXT);

INSERT INTO famous_people(first_name,last_name) VALUES ("Amber", "Heard");
INSERT INTO famous_people(first_name,last_name) VALUES ("Johnny", "Depp");
INSERT INTO famous_people(first_name,last_name) VALUES ("Angelina", "Jolie");
INSERT INTO famous_people(first_name,last_name) VALUES ("Brad", "Pitt");
INSERT INTO famous_people(first_name,last_name) VALUES ("Jennifer", "Aniston");
INSERT INTO famous_people(first_name,last_name) VALUES ("Daniel", "Radcliffe");
INSERT INTO famous_people(first_name,last_name) VALUES ("Emma", "Watson");
INSERT INTO famous_people(first_name,last_name) VALUES ("Keira", "Knightley");
INSERT INTO famous_people(first_name,last_name) VALUES ("Orlando", "Bloom");
INSERT INTO famous_people(first_name,last_name) VALUES ("John", "Krasinski");
INSERT INTO famous_people(first_name,last_name) VALUES ("Emily", "Blunt");
INSERT INTO famous_people(first_name,last_name) VALUES ("Nancy Ellen", "Walls");
INSERT INTO famous_people(first_name,last_name) VALUES ("Steve", "Carell");
INSERT INTO famous_people(first_name,last_name) VALUES ("Nicole", "Kidman");
INSERT INTO famous_people(first_name,last_name) VALUES ("Tom", "Cruise");

CREATE TABLE marriage_partners (id INTEGER PRIMARY KEY AUTOINCREMENT, person_id1 INTEGER, person_id2 INTEGER);

INSERT INTO marriage_partners (person_id1,person_id2) VALUES (1,2);
INSERT INTO marriage_partners (person_id1,person_id2) VALUES (3,4);
INSERT INTO marriage_partners (person_id1,person_id2) VALUES (10,11);
INSERT INTO marriage_partners (person_id1,person_id2) VALUES (12,13);
INSERT INTO marriage_partners (person_id1,person_id2) VALUES (14,15);

CREATE TABLE movie_partners (id INTEGER PRIMARY KEY AUTOINCREMENT, person_id1 INTEGER, person_id2 INTEGER, movie_title TEXT);

INSERT INTO movie_partners (person_id1,person_id2, movie_title) VALUES (1,2, "The Rum Diary");
INSERT INTO movie_partners (person_id1,person_id2, movie_title) VALUES (3,4, "Mr. and Mrs. Smith");
INSERT INTO movie_partners (person_id1,person_id2, movie_title) VALUES (4,5,"Fast Times at Ridgemont High Table Read");
INSERT INTO movie_partners (person_id1,person_id2, movie_title) VALUES (6,7, "Harry Potter");
INSERT INTO movie_partners (person_id1,person_id2, movie_title) VALUES (8,9, "Pirates of the Caribbean");
INSERT INTO movie_partners (person_id1,person_id2, movie_title) VALUES (2,8, "Pirates of the Caribbean");
INSERT INTO movie_partners (person_id1,person_id2, movie_title) VALUES (2,8, "Berlin I love you");
INSERT INTO movie_partners (person_id1,person_id2, movie_title) VALUES (2,9, "Pirates of the Caribbean");
INSERT INTO movie_partners (person_id1,person_id2, movie_title) VALUES (2,3, "The Tourist");
INSERT INTO movie_partners (person_id1,person_id2, movie_title) VALUES (10,11, "A Quiet Place");
INSERT INTO movie_partners (person_id1,person_id2, movie_title) VALUES (12,13, "40-year old virgin");
INSERT INTO movie_partners (person_id1,person_id2, movie_title) VALUES (10,13, "The Office");
INSERT INTO movie_partners (person_id1,person_id2, movie_title) VALUES (10,4, "The Big Short");
INSERT INTO movie_partners (person_id1,person_id2, movie_title) VALUES (14,15, "Days of Thunder");
INSERT INTO movie_partners (person_id1,person_id2, movie_title) VALUES (11,15, "Edge of Tomorrow 2");

For Movies made together, here is the code and the corresponding query results.

Code:

SELECT movie_partners.movie_title, a.first_name || ' ' || a.last_name AS actor1, b.first_name || ' ' || b.last_name AS actor2 
    FROM movie_partners
    JOIN famous_people a
    ON movie_partners.person_id1 = a.id
    JOIN famous_people b
    ON movie_partners.person_id2 = b.id;

Query Results:

movie_titleactor1actor2
The Rum DiaryAmber HeardJohnny Depp
Mr. and Mrs. SmithAngelina JolieBrad Pitt
Fast Times at Ridgemont High Table ReadBrad PittJennifer Aniston
Harry PotterDaniel RadcliffeEmma Watson
Pirates of the CaribbeanKeira KnightleyOrlando Bloom
Pirates of the CaribbeanJohnny DeppKeira Knightley
Berlin I love youJohnny DeppKeira Knightley
Pirates of the CaribbeanJohnny DeppOrlando Bloom
The TouristJohnny DeppAngelina Jolie
A Quiet PlaceJohn KrasinskiEmily Blunt
40-year old virginNancy Ellen WallsSteve Carell
The OfficeJohn KrasinskiSteve Carell
The Big ShortJohn KrasinskiBrad Pitt
Days of ThunderNicole KidmanTom Cruise
Edge of Tomorrow 2Emily BluntTom Cruise

For famous people who were married, the code is:

SELECT a.first_name || ' ' || a.last_name AS actor1, b.first_name || ' ' || b.last_name AS actor2 
    FROM marriage_partners
    JOIN famous_people a
    ON marriage_partners.person_id1 = a.id
    JOIN famous_people b
    ON marriage_partners.person_id2 = b.id;

Query results:

actor1actor2
Amber HeardJohnny Depp
Angelina JolieBrad Pitt
John KrasinskiEmily Blunt
Nancy Ellen WallsSteve Carell
Nicole KidmanTom Cruise

Note: In this particular exercise, I utilize the concatenate operator "||" in order to concatenate two separate columns for the first name and the last name.

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