SQL Server plan cache mining – Plan attributes
Edward Pollack demonstrates how SQL Server plan cache mining can uncover a wealth of information to help with troubleshooting performance issues.
Hidden Pitfalls with INNER JOIN and NOT IN Operators
I want to show you how two common operators can deceive you into believing you have constructed a proper SQL statement for your solution. We may want to filter results in a table by using using a IN/NOT IN or a INNER JOIN/LEFT JOIN to another table. There are a couple of hidden dangers here […]
How to choose between SQL and NoSQL databases
Organizations have many choices when it comes to databases. In this article, Robert Sheldon explains how to choose between SQL and NoSQL databases.
Measuring Team Performance: Calculate LeadTime metric using JIRA and GitHub data
In this article we look at how to measure lead time for development projects using Python along with GitHub and JIRA.
A Step by Step Guide to the Availability Group (AG) Listener
Availability databases hosted on SQL Server Always On Availability Groups (AG) can be connected using a unique Virtual Network Name (VNN), called the Availability Group Listener. When an Availability Group is enabled, clients can connect to databases in both primary and secondary replicas without explicitly specifying the SQL Server instance name. You don’t even need […]
Step by Step Guide to Install Jupyter Notebook
Whether you work as a Data Engineer or a Data Scientist, a Jupyter Notebook is a helpful tool. One of the projects I was working required a comparison of two parquet files. This is mainly a schema comparison, not a data comparison. Though the two .parquet were created from two different sources, the outcome should […]
How to Manage Date Formats in the Power BI Service
Learn how to properly configure input date formats for Power BI reports for any type of browser so users always get the results they expect.
Win DevOps books with Redgate’s competition
Redgate is giving you the chance to win your choice of DevOps books and Redgate goodies in their latest competition. To enter, visit the Redgate Forums and answer the question: ‘How is SQL Change Automation helping you?’
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BIT_COUNT II
Comments posted to this topic are about the item BIT_COUNT II
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 NULLWhat is returned when I run this code:
select bit_count(UserPermissions) as PermissionCount from dbo.UserPermission where UserID = 4;See possible answers