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Getting a Query Execution Plan in PostgreSQL

Introduction You often need to check the performance of a PostgreSQL query you just wrote to look for some way to improve performance. In order to do this, you need a report of the query execution, which is called the execution plan). The query execution plan gives you the entire summary of the query execution […]

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Stairway to SQL Server Security Level 2: Authentication

Authentication is the first step in letting a principal get access to an instance of SQL Server, essentially resolving the question, Who are you? In this stairway level you’ll learn about the basics of authentication and the authentication options available. This level covers logins and users and you’ll learn about the password policies that can help strengthen SQL Server authentication.

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Question of the Day

BIT_COUNT I

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

UserID  UserPermissions
15
23
37
What is returned when I run this code:
select bit_count(UserPermissions) as PermissionCount
from dbo.UserPermission
where UserID = 3;

See possible answers