David Russell

  • Interests: Arduino, Raspberry Pi and other micro-controllers. Building a Speeduino ECU in my Toyota Supra Turbo.

SQLServerCentral Article

An Elegant ETL Solution: Except for Lost Data

An early adopter of SQL Server 2005 found some issues with Integration Services. And he shows how it was debugged and the issue solved. This is a great look at some of the helpful parts of Intration Services in solving problems as well as a few places it falls short.

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2005-12-02

5,821 reads

SQLServerCentral Article

TechNote: Installing SQL Server 2005 and Visual Studio 2005

If you are working with SQL Server 2005, you really need Visual Studio 2005 as well. And since they are both in Beta, there are some interesting issues when installing both of these pre-products. New author David Russell brings us some technical notes he made while installing both of these many times in a corporate environment.

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2005-09-14

52,636 reads

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Question of the Day

The LAGging NULL

I have this data in a SQL Server 2022 table:

player         yearid team HR
Alex Rodriguez 2012   NYY  18
Alex Rodriguez 2013   NYY  7
Alex Rodriguez 2014   NYY  NULL
Alex Rodriguez 2015   NYY  12
Alex Rodriguez 2016   NYY  9
If I run this code, what are the results returned in the hrgrowth column?
SELECT
  player
, yearid
, hr
, hr - LAG (hr, 1, 0) IGNORE NULLS OVER (ORDER BY yearid) AS hrgrowth
FROM dbo.playerstats;

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