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Recursively create Tree Structure


Recursively create Tree Structure

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dwain.c
dwain.c
SSCoach
SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)SSCoach (17K reputation)

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Rats! Now why didn't I think of that?

+1 Peter


My mantra: No loops! No CURSORs! No RBAR! Hoo-uh!

My thought question: Have you ever been told that your query runs too fast?

My advice:
INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.


Need to UNPIVOT? Why not CROSS APPLY VALUES instead?
Since random numbers are too important to be left to chance, let's generate some!
Learn to understand recursive CTEs by example.
Splitting strings based on patterns can be fast!
My temporal SQL musings: Calendar Tables, an Easter SQL, Time Slots and Self-maintaining, Contiguous Effective Dates in Temporal Tables
vinu512
vinu512
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Thank You very much Peter. :-) Your solution is working very well....Let me do some more testing and will get back if something's missing.

Thank you Dwain for all your efforts. :-)

Vinu Vijayan

For better and faster solutions please check..."How to post data/code on a forum to get the best help" - Jeff Moden ;-)
vinu512
vinu512
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Hello again guys.....how are you doing?

The query is working perfectly fine. I have implemented the query and tested it for a tree having sub trees till the eighth level.

Peter, i am still not very clear with the adding of the 0s to the TreeOrder string. Could you please tell me the logic behind doing so.....would love to know.

Dwain, I'm really sorry for the missing commas in the Insert statements........My mind was completely occupied with the query even when I was posting the sample data.....but u still beat me to it :-)

Vinu Vijayan

For better and faster solutions please check..."How to post data/code on a forum to get the best help" - Jeff Moden ;-)
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