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I know the columns in lists can be indexed, so long as they meet qualifications (like how mult-value lookups aren't indexable (thank god!)). But does Sharepoint 2007 just keep two separate indices, or can it create a composite index?
Hi,
We can implement cascade drop down lists by JavaScript or third-party tool to achieve composite index. Please refer to these for more information: http://www.sharepointdrive.com/blog/implementing-cascading-drop-down-lists-in-sharepoint/ . http://social.msdn.microsoft.com/Forums/en-US/sharepointcustomization/thread/e44b302b-ab23-4d09-9b7f-923508e2fd59/ .
Thanks.
Emir Liu
TechNet Community Support