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Pro Developer: Improving Your Career In Any Economy

Like many other areas of business, the tech industry has weathered the occasional slump over the past few decades. It's only natural that the fate of techies is closely linked to the tides of the business. However, in any economy, weak or strong, some people prosper and advance while others suffer the consequences.

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2002-11-29

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Technical Article

Best SoftTool Announces SQLSourceSafe 2.0

Best SoftTool, Inc. today announces that its flagship product SQLSourceSafe 2.0 is available for download and purchase. SQLSourceSafe is the integrated solution that Best SoftTool provides to meet the mounting market demand for a solid version control system for SQL Server database development. SQLSourceSafe integrates Microsoft Visual SourceSafe® and Microsoft SQL Server® together, offers robust and advanced version control functions to database scripts in SQL Server.

2002-11-18

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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;

See possible answers