In this article we've see how to create three different types of user-defined functions and also how each of them work. We've also see their syntactical and implementation differences when compared to each other, as well as stored procedures.
User-defined functions are extremely powerful and are a great alterative to using stored when you don't actually need to commit any write changes to your data. For more information and examples on user-defined functions, checkout the links and books shown below.
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