Technical Article

sp_lock2  = sp_lock +shows database and object name

sp_lock2 is similar to sp_lock, except that it displays the database name, object name and index name instead of the ids.  It accepts no parameters unlike the sp_lock procedure which can take an optional spid parameter. The basis for the main query which queries the system tables for lock info was taken from the sp_lock […]

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2002-06-06

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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