In this lesson we will:
- Introduce the table function abstraction;
- Demonstrate how they are used in practice.
We recommend using a free ClickHouse Cloud Account when studying this lesson
ClickHouse Table Functions
A core ClickHouse concept to be aware of is table functions. These are essentially functions which create a table abstraction over some data source, in a way that they can be used within the FROM clause of a query.
Two examples we will be using in this lesson are the URL and the S3 table functions.