All authors

It seems we can’t find what you’re looking for. Perhaps searching can help.

Blogs

Free webinar – Tackling the Gaps and Islands Problem with T-SQL Window Functions

By

I’m hosting a free webinar at MSSQLTips.com at the 19th of December 2024, 6PM...

Counting Groups with Window Functions: #SQLNewBlogger

By

I looked at row_number() in a previous post. Now I want to build on...

The query processor ran out of internal resources and could not produce a query plan – When You’ve Managed to Confuse SQL With a Crazy IN Clause.

By

Recently I received a cry for help over Teams. The issue was that an...

Read the latest Blogs

Forums

How to merge two tables with unlike fields

By landonh

How to merge two tables with unlike fields. I have two table with one...

Visual Studio 22 / SSIS Project / (Project) Connection problem

By WilburSmith

Hello, First of all, I find it odd/annoying that I can't exclude a Project...

How to determine if a DB is currently being used

By dax.latchford

Hi - I'm looking for advice regarding the best & quickest way to establish...

Visit the forum

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