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This is a complete Python programming tutorial (for both Python 2 and Python 3!). In this chapter we are going to introduce a new table called Sales, which will have the following columns and data:. , insert , update , or delete occurred. function_body is used only in scalar functions and multi-statement table-valued functions (MSTVFs). SQL SUBSTRING Example. C is very powerful computer programming language and can be used for developing small general-purpose computer application to very complex real time applications. MySQL Tutorial Point - MySQL provides many aggregate functions that include AVG, COUNT, SUM, MIN, MAX, etc. In this tutorial, we will focus on what they are, and how they can make your life easier. MySQL database is available on most important OS platforms. A function always returns a value using the return statement. This tutorial will give you enough understanding on the. 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