sys-computed-columns-transact-sql.md

title	sys.computed_columns (Transact-SQL)
description	sys.computed_columns (Transact-SQL)
author	rwestMSFT
ms.author	randolphwest
ms.date	05/25/2021
ms.service	sql
ms.subservice	system-objects
ms.topic	reference
ms.custom	ignite-2025
f1_keywords	sys.computed_columns_TSQL sys.computed_columns computed_columns_TSQL computed_columns
helpviewer_keywords	sys.computed_columns catalog view
dev_langs	TSQL
monikerRange	>=aps-pdw-2016 || =azuresqldb-current || =azure-sqldw-latest || >=sql-server-2016 || >=sql-server-linux-2017 || =azuresqldb-mi-current || =fabric-sqldb

sys.computed_columns (Transact-SQL)

[!INCLUDE sql-asdb-asdbmi-asa-pdw-fabricsqldb]

Contains a row for each column found in sys.columns that is a computed-column.

Column name	Data type	Description
<Inherited columns>		The sys.computed_columns view returns all columns in the sys.columns view. It also returns the additional columns described below. For a description of the columns that the sys.computed_columns view inherits from sys.columns, see sys.columns (Transact-SQL). The value of the is_computed column is always set to 1 in the sys.computed_columns view.
definition	nvarchar(max)	SQL text that defines this computed-column.
uses_database_collation	bit	1 = The column definition depends on the default collation of the database for correct evaluation; otherwise, 0. Such a dependency prevents changing the database default collation.
is_persisted	bit	Computed column is persisted.

Permissions

[!INCLUDEssCatViewPerm] For more information, see Metadata Visibility Configuration.

See Also

Object Catalog Views (Transact-SQL)
Catalog Views (Transact-SQL)