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SQL Window Functions Series: NTILE()

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Unlock the power of SQL's NTILE function with our latest deep-dive article. Learn to segment your data effectively into quantiles for more nuanced analysis, discover common pitfalls and their solutions, and optimize your queries for peak performance.

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2024-02-03 (first published: )

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SQLServerCentral Article

SQL Window Functions Series: LAG() and LEAD()

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Dive deep into the powerful SQL window functions, LAG() and LEAD(). Explore their intricacies, discover real-world examples, and avoid common pitfalls.

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2023-12-11

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External Article

The difference between libraries and frameworks

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The concept behind frameworks and libraries is to provide reusable code that you can use to perform everyday tasks so that developers don’t have to write all of the code from scratch for every project. However, there are some differences that you need to understand as you start writing code, which I will cover in this article.

2023-07-05

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BIT_COUNT II

By Steve Jones - SSC Editor

Comments posted to this topic are about the item BIT_COUNT II

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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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