Sifiso W. Ndlovu

Sifiso W. Ndlovu is a certified Microsoft professional who holds a Master’s degree in IT Management from the University of Johannesburg. He specializes on a range of enterprise and consumer technologies using open source and proprietary software. He is the member of the Johannesburg SQL User Group wherein he has made several presentations on User Group Meetings and SQL Saturday sessions. He has written for a number of publications including SQLShack.com and SQLServerCentral.com.

All authors

All authors

Blogs

Excellent article on securing msdb

By

Fabiano Amorim has written an excellent article at Simple Talk on securing msdb. Here's...

T-SQL Tuesday #201: Temp Tables

By

This month we have a new host, which I am grateful for. So many...

When Do You Reach For A #temp Table?

By

I needed to do some research because there is more to #temp tables than...

Read the latest Blogs

Forums

Return all intermediate members of a recursive CTE?

By pietlinden

I wrote a recursive CTE to determine employee levels... but what if I wanted...

jdbc auth failing to sql from sap's cloud middleware CPI

By stan

hi , our business partner is asking s4 sap api's for receivable info and...

Searching for my own posts

By pietlinden

I have a really stupid question... Is there an easy way to search for...

Visit the forum

Question of the Day

The Range of Customers

I have this data in the OrderHeader table in a SQL Server 2025 database (ordered by CustomerID ASC): 

orderid orderdate               customerid complete
3       2025-05-10 00:00:00.0002          1
21      2024-01-10 00:00:00.0003          1
15      2023-10-28 00:00:00.0004   1
13      2025-03-08 00:00:00.0006          1
11      2024-04-02 00:00:00.0007          1
If I run this query, how many rows are returned? 
SELECT *
 from dbo.OrderHeader
 where customerid between 3 and '6'

See possible answers