Hierarchies on Steroids #1: Convert an Adjacency List to Nested Sets

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Posted on SQL Server Central See other posts from SQL Server Central
Published on Tue, 13 Nov 2012 07:00:00 UT Indexed on 2012/11/14 11:12 UTC
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SQL Server MVP Jeff Moden shows us a new very high performance method to convert an "Adjacency List" to “Nested Sets” on a million node hierarchy in less than a minute and 100,000 nodes in just seconds. Not surprisingly, the "steroids" come in a bottle labeled "Tally Table".

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