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One of the most common problems when running SQL Servers is slow queries. The help desk or database team usually hears that described as the application is slow or ...

A free tool to reduce coding for developers who like to surface T-SQL database recordsets in a simple collection of customized POCO objects. Every so often, I find myself wishing that I had a utility ...

Excel has grown into a powerful hub for data preparation, modeling, and automation. With tools like Power Query, Power Pivot, dynamic arrays, and Office Scripts, you can connect to multiple sources, ...

Databases are used in many different settings, for different purposes. For example, libraries use databases to keep track of which books are available and which are out on loan. Schools may use ...

Daniel Jassy, CFA, is an Investopedia Academy instructor and the founder of SPYderCRusher Research. He contributes to Excel and Algorithmic Trading. Return on investment (ROI) measures the amount of ...

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