Functions​

This page documents how to define custom functions, however EdgeDB provides a large library of built-in functions and operators. These are documented in Standard Library.

Functions are ways to transform one set of data into another.

User-defined Functions​

It is also possible to define custom functions. For example, consider a function that adds an exclamation mark '!' at the end of the string:

function exclamation(word: str) -> str
  using (word ++ '!');

This function accepts a str as an argument and produces a str as output as well.

select exclamation({'Hello', 'World'});

{'Hello!', 'World!'}

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