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Window Functions in SQL

SQL's windowing functions are surprisingly versatile, and allow us to cut out all those self-joins and explicit cursors. Joe Celko explains how they are used, and shows a few tricks such as calculating deltas in a time series, and filling in gaps.

2013-11-14

7,422 reads

External Article

New SQL Monitor Metric: Principals with Sysadmin Login

This metric counts the number of principals who are members of the sysadmin fixed server role. SQL Server relies on role-based security to manage permissions. If multiple IT system administrators have permissions to set up new SQL Server logins, they might be inclined to do so as part of the sysadmin role. Adding a normal user to the sysadmin role could pose a security risk and is not recommended unless the principal is highly trusted.

2013-11-11

3,175 reads

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Question of the Day

String Similarity II

What is the range for the result from the EDIT_DISTANCE_SIMILARITY() function in SQL Server 2025?

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