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SQLServerCentral Article

Understanding SQL Server PARTITION BY with Examples

Introduction When developers first learn SQL aggregation, they usually start with the GROUP BY clause. It works well for summary reports because it combines multiple rows into a single result for each group. For example, you can calculate total sales per region or average salary per department. The limitation of GROUP BY appears when you […]

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2026-06-05

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SQLServerCentral Article

T-SQL Trigonometric Functions in SQL Server

Introduction SQL Server includes several built-in mathematical functions that allow developers to perform complex calculations directly within queries. Among these are trigonometric functions such as SIN(), COS(), and TAN(), which are useful in scenarios involving engineering calculations, geographic data processing, simulations, and analytics. Although these functions are straightforward to use, developers occasionally encounter unexpected results […]

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2026-04-29

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Question of the Day

Hyperscale Replicas V

I have an Azure SQL Database Hyperscale Edition system running with a geo-replica enabled. Can I create a new geo-replica based on the current secondary geo-replica?

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