Difference between revisions of "JOIN Quiz 2"

Revision as of 16:28, 18 July 2012

JOIN Quiz - part 2

movie
Field name	Type	Notes
id	INTEGER	An arbitrary unique identifier
title	CHAR(70)	The name of the film - usually in the language of the first release.
yr	DECIMAL(4)	Year of first release.
director	INT	A reference to the actor table.
budget	INTEGER	How much the movie cost to make (in a variety of currencies unfortunately).
gross	INTEGER	How much the movie made at the box office.

actor
Field name	Type	Notes
id	INTEGER	An arbitrary unique identifier
name	CHAR(36)	The name of the actor (the term actor is used to refer to both male and female thesps.)

casting
Field name	Type	Notes
movieid	INTEGER	A reference to the movie table.
actorid	INTEGER	A reference to the actor table.
ord	INTEGER	The ordinal position of the actor in the cast list. The star of the movie will have ord value 1 the co-star will have value 2, ...

@@ Line 121: / Line 121: @@
 - SELECT name FROM actor INNER JOIN movie ON actor.id:director WHERE gross < budget
 - SELECT name FROM director INNER JOIN movie ON movie.id = director.id WHERE gross < budget
+{Select the correct example of JOINing three tables
+|type="()"}
+- SELECT * FROM actor JOIN casting BY actor.id = actorid JOIN movie BY movie.id = movieid
+- SELECT * FROM actor JOIN casting ON actor.id = actorid AND JOIN movie ON movie.id = movieid
+- SELECT * FROM actor JOIN casting JOIN movie ON actor.id = actorid AND movie.id = movieid
+- SELECT * FROM actor JOIN casting ON actor.id = actorid AND movie ON movie.id = movieid
++ SELECT * FROM actor JOIN casting ON actor.id = actorid JOIN movie ON movie.id = movieid
 </quiz>
 [[Category:Quizzes]]

	SELECT JOIN(name FROM actor, movie ON actor.id:director WHERE gross < budget) GROUP BY name
	SELECT name FROM actor INNER JOIN movie BY actor.id = director HAVING gross < budget
	SELECT name FROM actor INNER JOIN movie ON actor.id = director WHERE gross < budget
	SELECT name FROM actor INNER JOIN movie ON actor.id:director WHERE gross < budget
	SELECT name FROM director INNER JOIN movie ON movie.id = director.id WHERE gross < budget

	SELECT * FROM actor JOIN casting BY actor.id = actorid JOIN movie BY movie.id = movieid
	SELECT * FROM actor JOIN casting ON actor.id = actorid AND JOIN movie ON movie.id = movieid
	SELECT * FROM actor JOIN casting JOIN movie ON actor.id = actorid AND movie.id = movieid
	SELECT * FROM actor JOIN casting ON actor.id = actorid AND movie ON movie.id = movieid
	SELECT * FROM actor JOIN casting ON actor.id = actorid JOIN movie ON movie.id = movieid