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mysql练习----More JOIN operations

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This tutorial introduces the notion of a join. The database consists of three tables movie , actor and casting .

 


movie
actorcasting
id id movieid
title name actorid
yr   ord
director    
budget    
gross    
     

 

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movie

Field nameTypeNotes
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.

Example

idtitleyrdirectorbudgetgross
10003 "Crocodile" Dundee II 1988 38 15800000 239606210
10004 ‘Til There Was You 1997 49 10000000  

actor

Field nameTypeNotes
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.)

Example

idname
20 Paul Hogan
50 Jeanne Tripplehorn

casting

Field nameTypeNotes
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, ...

Example

movieidactoridord
10003 20 4
10004 50 1
 
 

 

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mysql练习----More JOIN operations

标签:key   nbsp   png   tutorial   com   nav   lin   nal   ble   

原文地址:http://www.cnblogs.com/tk55/p/6759749.html

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