Learn how to use UNION in SQL, a function that combines rows from multiple tables with the same structure. Discover the benefits, limitations, and best practices of UNION.

Complex SQL queries with multiple tables and conditions can be challenging to write, debug, and optimize. They can also affect the performance and reliability of your database system.

Eventually when you need to combine multiple tables in order to fetch the data, reducing database calls becomes very meaningful. Although in CakePhp's model, by default if the association between ...

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