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Message Posted: Wed, 26 Oct 2005 @ 15:55:18 GMT

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Subj:   Recursive Queries and conditioning hierarchies
From:   Lefeld, Dennis


I am trying to select specific hierarchies for removal. At this point stored procedures are not recommended due to CPU consumption, and I would like to perform this in one SQL pass. It seems like the only potential option is recursive queries. The problem, I think, is that I cannot selectively choose a hierarchy without limiting the result set to a partial list of the hierarchy that I wish to remove. Below is a list of the sample data. I would like to remove the hierarchy starting at ID 1. Everytime I try condition the recursive query I just get the one record with the ID of 1 instead of 1,2,3 and 4. Any help would be appreciated.

     ID        Parent_ID
     1         NULL
     2         1
     3         2
     4         1
     5         NULL
     6         5
     7         NULL


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