Jeff Moden

  • Interests: SQL. When Im not having fun with that, then SQL. ;-)

SQLServerCentral Article

Tally OH! An Improved SQL 8K “CSV Splitter” Function

The Tally Table has proven to be a simple and elegant method for avoiding many varieties of RBAR. Unfortunately, one of its more common uses, that of a CSV splitter, has a well-known and serious performance problem. MVP Jeff Moden shows us what that problem is and how to correct it. (UPDATED with additional info and attachments on 5/12/2011).

4.83 (188)

2012-12-28 (first published: )

117,470 reads

SQLServerCentral Article

Hierarchies on Steroids #2: A Replacement for Nested Sets Calculations

In this sequel to his first "Hierarchies on Steroids" article, SQL Server MVP Jeff Moden shows us how to build a pre-aggregated table that will answer most of the questions that you could ask of a typical hierarchy. Any bets on whether Santa is packin’ a Tally Table in his bag or not?

4.93 (28)

2012-11-15

15,550 reads

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