we will not count them because their left or right node are not their, i.e 6 and 7 are not paired.
"their left or right node are not their"
What does this statement mean? How do you determine that Lefts or Rights of a particular row is not their? Their who? How is this related or is this related to Lefts and Rights column values of the related record by Parent_Id?
HTH, Regards, Dean Savović, www.comminus.hr/en/
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