asymkey-id-transact-sql.md

title	ASYMKEY_ID (Transact-SQL)
description	ASYMKEY_ID (Transact-SQL)
author	VanMSFT
ms.author	vanto
ms.date	07/24/2017
ms.service	sql
ms.subservice	t-sql
ms.topic	reference
ms.custom	ignite-2025
f1_keywords	AsymKey_ID ASYMKEY_ID_TSQL
helpviewer_keywords	asymmetric keys [SQL Server], AsymKey_ID ASYMKEY_ID function encryption [SQL Server], asymmetric keys identification numbers [SQL Server], asymmetric keys IDs [SQL Server], asymmetric keys cryptography [SQL Server], asymmetric keys
dev_langs	TSQL
monikerRange	=azuresqldb-current || >=sql-server-2016 || >=sql-server-linux-2017 || =azuresqldb-mi-current || =fabric-sqldb

ASYMKEY_ID (Transact-SQL)

[!INCLUDE SQL Server Azure SQL Database Azure SQL Managed Instance FabricSQLDB]

Returns the ID of an asymmetric key.

:::image type="icon" source="../../includes/media/topic-link-icon.svg" border="false"::: Transact-SQL syntax conventions

Syntax

ASYMKEY_ID ( 'Asym_Key_Name' )  

Arguments

Asym_Key_Name
The name of an asymmetric key in the database.

Return types

int

Permissions

Requires appropriate permission(s) on the asymmetric key, and requires that the caller has not been denied VIEW permission on the asymmetric key. See CREATE ASYMMETRIC KEY (Transact-SQL) for more information about asymmetric key permissions.

Examples

This example returns the ID of asymmetric key ABerglundKey11.

SELECT ASYMKEY_ID('ABerglundKey11');  
GO  

See also

CREATE ASYMMETRIC KEY (Transact-SQL)
ALTER ASYMMETRIC KEY (Transact-SQL)
DROP ASYMMETRIC KEY (Transact-SQL)
SIGNBYASYMKEY (Transact-SQL)
VERIFYSIGNEDBYASYMKEY (Transact-SQL)
Encryption Hierarchy
sys.asymmetric_keys (Transact-SQL)
Security Catalog Views (Transact-SQL)
ASYMKEYPROPERTY (Transact-SQL)
KEY_ID (Transact-SQL)