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---
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slug: /en/sql-reference/table-functions/
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sidebar_label: Table Functions
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sidebar_position: 1
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---
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# Table Functions
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Table functions are methods for constructing tables.
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You can use table functions in:
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2023-04-19 16:10:51 +00:00
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- [FROM](../../sql-reference/statements/select/from.md) clause of the `SELECT` query.
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2022-08-11 00:09:43 +00:00
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The method for creating a temporary table that is available only in the current query. The table is deleted when the query finishes.
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- [CREATE TABLE AS table_function()](../../sql-reference/statements/create/table.md) query.
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It's one of the methods of creating a table.
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- [INSERT INTO TABLE FUNCTION](../../sql-reference/statements/insert-into.md#inserting-into-table-function) query.
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2023-03-27 18:54:05 +00:00
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:::note
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You can’t use table functions if the [allow_ddl](../../operations/settings/permissions-for-queries.md#settings_allow_ddl) setting is disabled.
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:::
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