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Complex joins help
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To
17/12/2008 20:41:20
Timothy Bryan
Sharpline Consultants
Conroe, Texas, United States
General information
Forum:
Microsoft SQL Server
Category:
SQL syntax
Environment versions
SQL Server:
SQL Server 2008
Application:
Desktop
Miscellaneous
Thread ID:
01368368
Message ID:
01368372
Views:
6
>I have a complex join and am over my head. I am hoping to get some advice on how to do this. Let me explain.
>
>I have 5 tables involved.
>Contact - Contains people names
>Membership - Represents a membership in an organization
>MemberContacts - is a linking table for the above
>Membership can have many Contacts but Contacts can have only one Membership. Problem is the Contact does not have to be in Membership


>Lot - represents all the lots in a given subdivision
>LotOwned - is linking table to link the lots to membership
>A lot can have only one membership, but Membership can have many lots.
>
>    Lot                  LotOwned                           Membership                             MemberContacts                              Contact
>Lot.Lot_Id --> LotOwned.Lot_Id
>                         LotOwned.Member_Id --> Membership.Member_Id
>                                                                        Membership.Member_Id -->MemberContacts.Member_Id
>                                                                                                                           MemberContacts.Contact_Id --> Contact.Contact_Id
>What I want is to have a list of Contact Names for each lot. so Lot is the parent and I need Contact as a child table.
>
>A single record in Lot should get me a single record in LotOwned which should get me only a single record in Membership but should get me one or more records in MemberContacts with each a corresponding record in Contact.
>Thanks for any help or advice.
>Tim

Tim,

Try a variation of
select * from (select Lot.Lot_ID from Lot INNER JOIN LotOwned on Lot.Lot_ID = LotOwned.Lot_ID) Lots 
INNER JOIN Member_Contacts.Member_ID ON Lots.Member_ID = MemberContacts.Member_ID 
INNER JOIN Contact ON MemberContacts.Contact_ID = Contact.Contact_ID
If it's not broken, fix it until it is.


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