Hierarchy

SQLServerCentral Article

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

  • Article

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".

(63)

You rated this post out of 5. Change rating

2014-09-19 (first published: )

43,498 reads

Blogs

T-SQL Tuesday #201: Temp Tables

By

This month we have a new host, which I am grateful for. So many...

When Do You Reach For A #temp Table?

By

I needed to do some research because there is more to #temp tables than...

Accept the no and move on

By

Here is a short emotional intelligence (EI) post for today, courtesy of Seth Godin....

Read the latest Blogs

Forums

jdbc auth failing to sql from sap's cloud middleware CPI

By stan

hi , our business partner is asking s4 sap api's for receivable info and...

Searching for my own posts

By pietlinden

I have a really stupid question... Is there an easy way to search for...

How to Work with On-Premises AI Models to Generate T-SQL Code

By Daniel Calbimonte

Comments posted to this topic are about the item How to Work with On-Premises...

Visit the forum

Question of the Day

Escaping Strings

The STRING_ESCAPE() function requires 2 parameters in SQL Server 2025. The first is a string of text and the second is the type of escape rules being used. What are the options for the second parameter?

See possible answers