Recursive query question - break rows into columns?

Posted by Stew on Stack Overflow See other posts from Stack Overflow or by Stew
Published on 2010-05-26T21:17:12Z Indexed on 2010/05/26 21:21 UTC
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Filed under:

sql

|

beginner

|

sql-server-2000

|

recursive-query

I have a table "Families", like so

FamilyID    PersonID    Relationship
-----------------------------------------------
F001        P001        Son
F001        P002        Daughter
F001        P003        Father
F001        P004        Mother
F002        P005        Daughter
F002        P006        Mother
F003        P007        Son
F003        P008        Mother

and I need output like

FamilyID    PersonID    Father  Mother
-------------------------------------------------
F001        P001        P003    P004
F001        P002        P003    P004
F001        P003        
F001        P004        
F002        P005                P006
F002        P006        
F003        P007                P008
F003        P008

In which the PersonID of the Father and Mother for a given PersonID are listed (if applicable) in separate columns. I know this must be a relatively trivial query to write (and therefore to find instructions for), but I can't seem to come up with the right search terms. Searching "SQL recursive queries" has gotten me closest, but I can't quite translate those methods to what I'm trying to do here.

I'm trying to learn, so multiple methods are welcome, as is vocabulary I should read up on. Thanks!

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