Re: Newbie question on multiple tables

2004-10-30 Thread Gleb Paharenko
Hi.

You may read:

  http://dev.mysql.com/doc/mysql/en/JOIN.html

  http://dev.mysql.com/doc/mysql/en/SELECT.html



There is a good description.

Searching in more than two tables (3 in my example) may be done

in such way:



  select t1.* from t1,t2,t3 where t1.a=t2.a and t1.b=t3.b



But using left or inner joins depends on results you are expecting. 





Steve Grosz [EMAIL PROTECTED] wrote:

 I am just now getting the hang of searching through 2 tables, and 

 getting the corresponding information using a pri  foreign key 

 (ID1=ID1) kinda thing.  How is this done with more than 2 tables?

 

 I had asked on a different forum, but I got some funky select statement 

 using a left inner join, and lots of other statements that didn't make a 

 lot of sense to me.

 

 Is that the way it would need to be done?  A inner join?  If so why?

 

 Thanks!

 

 Steve

 



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Newbie question on multiple tables

2004-10-29 Thread Steve Grosz
I am just now getting the hang of searching through 2 tables, and 
getting the corresponding information using a pri  foreign key 
(ID1=ID1) kinda thing.  How is this done with more than 2 tables?

I had asked on a different forum, but I got some funky select statement 
using a left inner join, and lots of other statements that didn't make a 
lot of sense to me.

Is that the way it would need to be done?  A inner join?  If so why?
Thanks!
Steve
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