Viacheslav Maliutin


SQLServerCentral Article

Should I Type * or 1 With the EXISTS Logical Operator

In my project I see that people writes different things with EXISTS logical operator (EXISTS (SELECT StarOrOne FROM...)). They are "*", "1" and even "TOP 1 1" or "TOP 1 *". The aim of this article to give a good explanation which option is the best.

(44)

You rated this post out of 5. Change rating

2020-01-24 (first published: )

14,877 reads

Blogs

Identity Columns Can’t Be Updated: #SQLNewBlogger

By

I’m not sure I knew identity column values could not be updated. I ran...

Rolling Back a Broken Release

By

We had an interesting discussion about deployments in databases and how you go forward...

A bespoke reporting solution doesn’t have to cost the earth

By

You could be tolerating limited reporting because there isn’t an off the shelf solution...

Read the latest Blogs

Forums

Can someone please explain what happens?

By skeleton567

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

By tim8w

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

By John Miner

Comments posted to this topic are about the item Remotely Engineer Fabric Lakehouse objects:...

Visit the forum

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
8Kirin
I run this code:
SELECT JSON_OBJECTAGG(
    BeerID: BeerName )
FROM beer;
What are the results?

See possible answers