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In the world of data analysis, advanced SQL techniques are essential for extracting valuable insights from complex datasets. This comprehensive guide by Chandoo delves into these powerful techniques, ...

Oracle today introduced the Oracle SQL Developer Data Modeler. The standalone tool supports logical, relational, multi-dimensional and data type modeling while featuring multi-layered design and ...

With most Excel spreadsheets, you enter data manually into cells and then use formulas or other functions to analyze it or perform calculations. If you have a large data source, such as an Access ...

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

Oracle introduced the Oracle SQL Developer Data Modeler. The standalone tool supports logical, relational, multi-dimensional and data type modeling while featuring multi-layered design and generation ...