Description:
Welcome back to our channel's SQL tutorial series! Building on our previous lesson using Microsoft's Northwind sample database, this session dives into the fundamentals of the SELECT command to retrieve and manipulate data. You will learn how to pull entire tables, specify exact column names to manage large datasets, change column order, and use fully qualified table paths with database names for better practice and clarity.
Beyond basic retrieval, the tutorial covers advanced techniques such as creating temporary or calculated columns by combining fields—like merging customer IDs and company names—and utilizing brackets to safely handle reserved SQL keywords. Whether you are filtering specific attributes or generating custom metrics like profits and percentages, mastering these SELECT statement variants is essential for efficient data engineering, paving the way for our next video on row filtering.
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#SQL #Database #DataEngineering #SQLTutorial #LearnSQL #DataAnalytics #TechEducation
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