When Page Prefetching Takes a Back Seat – Exploring Trace Flag 652 in SQL Server
Learn how a trace flag affects SQL Server reading from disk and where this might be a useful thing for you to enable.
2025-09-24
2,521 reads
SQL Server internal storage
2025-05-16
632 reads
2025-01-15
1,867 reads
What happens when we drop a column on a SQL Server table? Where's my space?
You have dropped a column and wondering why you haven't recovered any space? Let's take a look.
2024-08-01 (first published: 2024-04-26)
5,063 reads
Identify Tables With Dropped Columns
How easily can we find tables with dropped columns that need cleanup?
2024-06-07
2,631 reads
2024-04-10
466 reads
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 […]
2021-05-10
8,894 reads
Understanding CRUD Operations Against Heaps and Forwarding Pointers
In this article, we examine how data changes are made against heaps.
2021-05-03
4,887 reads
Understanding the Internals of a Data Page
In Part 1 of this series, we examine the structure of data pages and how your tables are stored on these pages.
2021-04-13
20,911 reads
2020-06-26
653 reads
Blogs
The Book of Redgate: Hours
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I have said and written this many times: Redgate Software is the type of...
How to Check TDE Progress and Elapsed Time in SQL Server
By SQLPals
How to Check TDE Progress and Elapsed Time in SQL Server ...
PostgreSQL Support in the Data API Builder
By Steve Jones
Next week I’m at VS Live in San Diego (register and join me) and...
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Squared Values
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Managing Feature Flags with GET_BIT() and SET_BIT() in SQL Server
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Question of the Day
Squared Values
What happens when I run this code in SQL Server 2022?
SELECT SQUARE('12') See possible answers