SQLServerCentral Article

Duplicate Indexing Woes

Why would you ever create duplicate indexes? Does that even make sense? Steve Jones isn't sure, and that's for another day, but it sure caused him some problems. Follow along and find a solution for tracking these down.

Technical Article

Superior SQL Builder v1.3 released

Red Earth Technologies announces the release of version 1.3 of Superior SQL Builder, its SQL tool that allows users to visually build complete SQL scripts without typing any code.

Superior SQL Builder introduces new SQL scripting technology, allowing users to quickly and easily transform their database data. In version 1.3 this scripting technology has been extended and enhanced so that complex SQL scripts can be built in less time and with greater ease.

SQLServerCentral Article

Codd's Rules

Frank gives us his take on Codd's Rules. If you're new to databases, this is the core theory that resulted in the development of RDBMS. If you're more experienced with databases, maybe now is a good time to return to the rules to see how you're doing!

Blogs

Counting Groups with Window Functions: #SQLNewBlogger

By

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

Extending a SQL Server Failover Cluster Across Regions in  Google Cloud Platform (GCP)

By

I was the principal author of this SIOS whitepaper, which describes how to build...

Read the latest Blogs

Forums

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...

Data cleansing/conversion tool HPE

By juliava

Hello.   I am looking for a tool Data cleansing/conversion, was recommended HPE any...

System views in a contained availability group

By mark4data

I have a query that runs in a job to check on orphaned users....

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