2015-05-01
1,798 reads
NULL
Database Design Follies: NULL vs. NOT NULL
It sounds simple enough. Either your column will always have a value or it may not. Yet somehow such a seemingly simple decision can become a never-ending debate where database schema begins to resemble superstition and designing effective tables seems more contentious than you expected it to be.
2016-02-26 (first published: 2014-10-30)
27,263 reads
2014-03-27
2,362 reads
2013-06-05
2,452 reads
2013-05-10
2,260 reads
2012-05-11
3,357 reads
Working with null values in SQL XML
We all know NULL values must be dealt with carefully in T-SQL, but how exactly do you best deal with them in SQL XML?
2010-10-26
27,553 reads
2010-06-17
3,956 reads
2010-04-07
4,056 reads
Accommodating Null Values in SQL Server
The key to working with null values properly is to accommodate them consistently. Learn a few tricks that will help you do just that.
2009-09-16
4,497 reads
Blogs
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Forums
Can someone please explain what happens?
I have mentioned this several times over several years. Can someone please help me...
SELECT COUNT(DISTINCT) returns null when nothing is found instead of 0
SELECT COUNT(DISTINCT Component) AS Found FROM tblComponents WHERE(Component NOT LIKE '%[a-z]%') AND(LTRIM(RTRIM(Component)) = 'GM13622')...
Remotely Engineer Fabric Lakehouse objects: The Fabric Modern Data Platform
Comments posted to this topic are about the item Remotely Engineer Fabric Lakehouse objects:...
Question of the Day
Creating JSON III
In a SQL Server 2025 table, called Beer, I have this data:
BeerIDBeerName 1Becks 2Fat Tire 3Mac n Jacks 4Alaskan Amber 8KirinI run this code:
SELECT JSON_OBJECTAGG(
BeerID: BeerName )
FROM beer;
What are the results? See possible answers