Table functions are methods for constructing tables.
You can use table functions in:
FROM clause of the
The method for creating a temporary table that is available only in the current query. The table is deleted when the query finishes.
CREATE TABLE AS
It's one of the methods of creating a table.
You can't use table functions if the allow_ddl setting is disabled.
|file||Creates a File-engine table.|
|merge||Creates a Merge-engine table.|
|numbers||Creates a table with a single column filled with integer numbers.|
|remote||Allows you to access remote servers without creating a Distributed-engine table.|
|url||Creates a Url-engine table.|
|mysql||Creates a MySQL-engine table.|
|jdbc||Creates a JDBC-engine table.|
|odbc||Creates a ODBC-engine table.|
|hdfs||Creates a HDFS-engine table.|