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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 […]

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2021-05-19

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SQLServerCentral Article

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 […]

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2021-05-17

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SQLServerCentral Article

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 […]

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2021-05-17

5,271 reads

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Merry Christmas 2025

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The Reindeer Count

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Events of System_health extended event serious or not

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I have listed the event names present in my system_health extended event report. Based...

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Question of the Day

The Reindeer Count

How many reindeer does Santa have pulling his sleigh? (according to the famous song) Hint, the answers are not base 10.

See possible answers