ClickHouse/docs/en/sql-reference/table-functions/index.md

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/en/sql-reference/table-functions/	Table Functions	34

Table Functions

Table functions are methods for constructing tables.

You can use table functions in:

• FROM clause of the SELECT query.

  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 table_function() query.

It's one of the methods of creating a table.

• INSERT INTO TABLE FUNCTION query.

:::warning You can’t use table functions if the allow_ddl setting is disabled. :::