Mohsin Khan

Mohsin is a database expert with over 12 years of professional experience as a database administrator and architect. He has a master’s degree in Information Quality. He has accomplished many demanding targets and led and executed many multi-million-dollar projects for some big Fortune 50 companies. He has actively pursued mentoring and coaching others through various writing activities, speaking engagements, blog posts, and discussion platforms dedicated to data professionals. He likes messing around with databases and enjoys sharing his knowledge and experiences.
  • Interests: Database administration, Data Engineering, Database architecture
  • Skills: SQL Server, Azure SQL, Spark, Databricks, Snowflake

SQLServerCentral Article

Understanding CRUD Operations on Tables with B-tree Indexes, Page-splits, and Fragmentation

Introduction Every DML transaction reads the data before it makes any changes. Not only during a SELECT query, but when you run any DML statement, insert, update, or delete, SQL Server first fetches a bunch of pages into the buffer pool locating the desired rows and changes them while synchronously writing to the transaction log […]

5 (6)

You rated this post out of 5. Change rating

2021-05-10

7,925 reads

Blogs

A New Word: Ecstatic Shock

By

ecstatic shock – n. a surge of energy upon catching a glimpse from someone...

The CDO’s Playbook for AI Driven Decision Making

By

The New Arena of Leadership The role of the Chief Data Officer is no...

sp_snapshot – The easy way to take database snapshots of one or more databases – V3.0

By

Presenting you with an updated version of our sp_snapshot procedure, allowing you to easily...

Read the latest Blogs

Forums

Lessons from the Postmark-MCP Backdoor

By dbakevlar

Comments posted to this topic are about the item Lessons from the Postmark-MCP Backdoor

Arc Enabled SQL Server

By Jo Pattyn

Just saw the "Azure Extension for SQL Server" Does anyone has experience with it?...

Recursive Select - What is this really doing

By Leo.Miller

I've noticed several instances of what looks like a recursive insert with the format:...

Visit the forum

Question of the Day

The Maximum Value in the Identity Column

I have a table with this data:

TravelLogID CityID StartDate  EndDate
1           1      2025-01-01 2025-01-06
2           2      2025-01-01 2025-01-06
3           3      2025-01-01 2025-01-06
4           4      2025-01-01 2025-01-06
5           5      2025-01-01 2025-01-06
I run this code:
SELECT IDENT_CURRENT('TravelLog')
I get the value 5 back. Now I do this:
SET IDENTITY_INSERT dbo.TravelLog ON
INSERT dbo.TravelLog
(
    TravelLogID,
CityID,
    StartDate,
    EndDate
)
VALUES
(25, 5, '2025-09-12', '2025-09-17')
SET IDENTITY_INSERT dbo.TravelLog OFF
I now run this code.
DBCC CHECKIDENT(TravelLog)
GO
INSERT dbo.TravelLog
(
    CityID,
    StartDate,
    EndDate
)
VALUES
(4, '2025-10-14', '2025-10-17')
GO
What is the value for TravelLogID for the row I inserted for CityID 4 and dates starting on 14 Oct 2025?  

See possible answers