T-SQL

External Article

Purging Data from a Large Table in SQL Server

  • Article

Purging data from a table is a common database maintenance task to prevent it from growing too large or to stay in compliance with data retention. When dealing with small amounts of data, this can be accomplished by a simple delete with no issues; however, with larger tables, this task can be problematic. Deleting records requires a lock that can block other processes from writing or even reading the data (depending on your isolation level). In this article I will share a technique I have used to work with some very large tables.

2025-06-04

Blogs

Better Trigger Design: #SQLNewBlogger

By

I had someone ask me about using triggers to detect changes in their tables....

SQL Server in the Cloud – Are DBAs Still Needed?

By

Things your cloud vendor may not tell you   Here’s a common theme I...

AZ-900: Microsoft Azure Fundamentals – The Ultimate Beginner’s Guide to Cloud Mastery

By

In an era where cloud computing drives innovation, understanding its fundamentals is no longer...

Read the latest Blogs

Forums

Dropping a PK constraint.

By stevec883

I will have to test this next week, but will not have a chance...

SQL - Conditional merge join

By SQL Bee

I want to add a condition in the joining columns part of the merge...

Is there a way to implement ROWS between logic?

By water490

Hi everyone SUM function has the option to select ROWS BETWEEN parameter to allow...

Visit the forum

Question of the Day

What is Between?

I have a table of products in SQL Server 2022. There are sequential items in the table with ProductIDs of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. If I run this code, how many rows are returned? 

SELECT *
FROM dbo.Products
WHERE ProductID
BETWEEN 4 AND 7;

See possible answers