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People & Phones tables problem
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À
11/05/2008 11:14:19
Mike Yearwood
Toronto, Ontario, Canada
Information générale
Forum:
Visual FoxPro
Catégorie:
Stonefield
Versions des environnements
Visual FoxPro:
VFP 8 SP1
OS:
Windows XP
Database:
Visual FoxPro
Divers
Thread ID:
01315983
Message ID:
01316300
Vues:
16
>>>>BTW, in LS how did you eliminate blanks? I guess I would have to dig your utility somewhere...
>>>
>>>Not sure what you mean by that.
>>
>>If I understood your suggestion correctly you were suggesting to have
>>
>>select LastName, FirstName, Phone, Type from People left join Phones on People.PersonID = Phones.PerrsonID
>>
>>In the report we'll have
>>
>>Last Name First Name  Home Phone(s)       Office Phone(s)     Cellular
>>LastName  FirstName   Phone (Print When Type='Home') ...
>>
>>My question is - how dd you get all the phones on the same line using this approach ? I believe it would not work this way and all phones would end up on a new line per phone.
>
>Doesn't this seem like a crosstab to you?

Yes, it does. Though in my case since the number of possible types is limited and predefined I can get all the data into the cursor using few left joins and derived tables, e.g.
select p.LastName, p.FirstName, Home.HomePhone, ... from People p 
left join 
(select P.ID, Ph.Phone as HomePhone from People P 
LEFT JOIN Phones Ph on P.ID = Ph.ID and Ph.Type = 'Home') Home 
LEFT JOIN (...) 
LEFT JOIN (...)
If it's not broken, fix it until it is.


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