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what query will solve this? (picture diagram included)

Peter Primrose
Ranch Hand

Joined: Sep 10, 2004
Posts: 755
Hi all,

Below is a diagram describing the relationship between items (Parent-Child).

The items are stored in a database as parentID and ChildID (lower left in the photo)

Q: What query will return the table below (or just the list of ALL child) if I input the MAIN Parent (in the example 7); in other word: SELECT (algorithm) WHERE parentID=7

Thank you!

Jeanne Boyarsky
author & internet detective
Marshal

Joined: May 26, 2003
Posts: 30789
    
157

Peter,
It sounds like you are looking for how to do a recursive query. This isn't possible using generic SQL. You can use a stored procedure or a database specific function (if your database has one.) This article shows the approach for db2 and oracle.


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