11. Using Data Manipulation Functions
In this chapter, you learn what functions are, what types of functions MariaDB supports, and how to use these functions.
Understanding Functions
Like almost any other computer language, SQL supports the use of functions to manipulate data. Functions are operations usually performed on data, usually to facilitate conversion and manipulation.
An example of a function is the RTrim() that we used in the last chapter to trim any spaces from the end of a string.
Note: Functions Are Less Portable Than SQL
Code that runs on multiple systems is said to be portable. Most SQL statements are relatively portable, and when differences between SQL implementations do occur they are usually not that difficult to deal with. ...
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