Question

Need some help with a question about views

Asked by: errang

Hey,

       I got a quick question about views in MySQL:

This is the question:

MovieStar(name, address, gender, birthdate)
MovieExec(name, address, cert#, netWorth)

Create a view ExecutiveStar giving the name, address, gender, birth date, certificate number and net worth of all individuals who are both executives and stars.

This is what I got:

CREATE VIEW ExecutiveStar AS
             SELECT name, address, gender, birthdate, cert#, netWorth
             FROM MovieStar, MovieExec
             WHERE MovieStar.name = MovieExec.name;

The question I have is, in the SELECT statement, I am including attributes that are in one, or both, would that cause a problem? Would I be better off using SELECT *?

Thanks in advance!!!

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Asked On
2009-11-03 at 14:33:23ID24869159
Tags

MySQL

,

view

Topics

MySQL Server

,

MS SQL Server

,

Databases Miscellaneous

Participating Experts
2
Points
500
Comments
11

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Answers

 

by: aneeshattingalPosted on 2009-11-03 at 14:36:40ID: 25734600

Dont use SELECT * , instead specify the columnnames

 

by: aneeshattingalPosted on 2009-11-03 at 14:37:02ID: 25734606

CREATE VIEW ExecutiveStar AS
             SELECT MovieExec.name , address, gender, birthdate, cert#, netWorth
             FROM MovieStar, MovieExec
             WHERE MovieStar.name = MovieExec.name;

 

by: errangPosted on 2009-11-03 at 14:38:19ID: 25734620

Ok, thank you.

 

by: leakim971Posted on 2009-11-03 at 14:38:38ID: 25734625

Hello errang,

Specify which one you want to get :

CREATE VIEW ExecutiveStar AS
             SELECT MovieStar.name name, MovieStar.address address, gender, birthdate, cert#, netWorth
             FROM MovieStar, MovieExec
             WHERE MovieStar.name = MovieExec.name;
                                              
1:
2:
3:
4:

Select allOpen in new window

 

by: leakim971Posted on 2009-11-03 at 14:39:19ID: 25734634

Wow ! Sorry...

 

by: errangPosted on 2009-11-03 at 14:40:09ID: 25734643

>>Specify which one you want to get :

Wait... Can't I get both?

 

by: errangPosted on 2009-11-03 at 14:41:01ID: 25734652

>>Wow ! Sorry...

??

 

by: leakim971Posted on 2009-11-03 at 14:41:55ID: 25734662

if you change name of the field of course :

CREATE VIEW ExecutiveStar AS
             SELECT MovieStar.name name, MovieStar.address address, MovieExec.name nameExec, MovieExec.address addressExec, gender, birthdate, cert#, netWorth
             FROM MovieStar, MovieExec
             WHERE MovieStar.name = MovieExec.name;

                                              
1:
2:
3:
4:

Select allOpen in new window

 

by: leakim971Posted on 2009-11-03 at 14:43:21ID: 25734674

>Wow ! Sorry...
Just click on the button and see aneeshattingal already answer you

 

by: errangPosted on 2009-11-03 at 14:43:59ID: 25734681

>>if you change name of the field of course

ah... ok, I'm sorry I closed the question a bit early

 

by: leakim971Posted on 2009-11-03 at 14:45:49ID: 25734710

No problem, it's the rules of the game.

20120131-EE-VQP-002

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