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joiko

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How do I find path when leaf node is unknown?

I've used nested sets methodology proposed by Celko to create a tree for calculating MLM commissions.  I need to find if any node meets certain characteristics (i.e. "rank") between the parent node and the terminating leaf node, when I do not know the left or right values of the leaf node or how many nodes are between the parent and the leaf.

Key fields are:
lft
rgt
idNumber
rank

Any suggestions?  I am wrting in ASP using mySQL as database.

I could alternatively work from down up (in which I would know the leaf node) but need to find the first instance above the leaf node that meets the rank qualifications.

Thanks in advance for your help.
SoftwareDatabasesMySQL Server

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joiko

8/22/2022 - Mon