External Article

Refactoring Databases: The Process

This article describes how to implement a single refactoring within your database. It contains a worked example of the Move Column structural refactoring, whereby we move the Customer.Balance column to the Account table, a seemingly straightforward change to improve the database design.

Technical Article

Change Data Capture with SSIS

In this presentation, Brian Knight shows you how to use canned SSIS components to detect data changes in a source table and only load new or conditionally update changed records. He shows you two methods: one using the OLE DB command and another using a set based operation and demostrates you the performance differences between the two.

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Question of the Day

BIT_COUNT II

In SQL Server 2025, I have a table (dbo.UserPermission) that contains this data:

UserID  UserPermissions
15
23
37
4       NULL
What is returned when I run this code:
select bit_count(UserPermissions) as PermissionCount
from dbo.UserPermission
where UserID = 4;

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