sys-system-parameters-transact-sql.md

title	description	author	ms.author	ms.date	ms.service	ms.subservice	ms.topic	f1_keywords	helpviewer_keywords	dev_langs	monikerRange
sys.system_parameters (Transact-SQL)	sys.system_parameters (Transact-SQL)	rwestMSFT	randolphwest	04/30/2021	sql	system-objects	reference	sys.system_parameters sys.system_parameters_TSQL system_parameters_TSQL system_parameters	sys.system_parameters catalog view	TSQL	>=aps-pdw-2016||=azuresqldb-current||=azure-sqldw-latest||>=sql-server-2016||>=sql-server-linux-2017||=azuresqldb-mi-current||=fabric

sys.system_parameters (Transact-SQL)

[!INCLUDE sql-asdb-asdbmi-asa-pdw-fabricse-fabricdw]

Contains one row for each system object that has parameters.

Column name	Data type	Description
object_id	int	ID of the object to which this parameter belongs.
name	sysname	Name of the parameter. Is unique within the object. If the object is a scalar function, the parameter name is an empty string in the row representing the return value.
parameter_id	int	ID of the parameter. Is unique within the object. If the object is a scalar function, parameter_id = 0 represents the return value.
system_type_id	tinyint	ID of the system type of the parameter.
user_type_id	int	ID of the type of the parameter as defined by the user. To return the name of the type, join to the sys.types catalog view on this column.
max_length	smallint	Maximum length of the parameter, in bytes. Value will be -1 for when column data type is varchar(max), nvarchar(max), varbinary(max), or xml.
precision	tinyint	Precision of the parameter if numeric-based; otherwise, 0.
scale	tinyint	Scale of the parameter if numeric-based; otherwise, 0.
is_output	bit	1 = Parameter is output (or return); otherwise, 0.
is_cursor_ref	bit	1 = Parameter is a cursor-reference parameter.
has_default_value	bit	1 = Parameter has default value. [!INCLUDEssNoVersion] only maintains default values for CLR objects in this catalog view; therefore, this column will always have a value of 0 for [!INCLUDEtsql] objects. To view the default value of a parameter in a [!INCLUDEtsql] object, query the definition column of the sys.sql_modules catalog view, or use the OBJECT_DEFINITION system function.
is_xml_document	bit	1 = Content is a complete XML document. 0 = Content is a document fragment or the data type of the column is not xml.
default_value	sql_variant	If has_default_value is 1, the value of this column is the value of the default for the parameter; otherwise NULL.
xml_collection_id	int	Non-zero if the data type of the parameter is xml and the XML is typed. The value is the ID of the collection that contains the validating XML schema namespace for the parameter. 0 = There is no XML schema collection.
is_readonly	bit	1 = Parameter is READONLY; otherwise, 0.
is_nullable	bit	1 = Parameter is nullable. (the default). 0 = Parameter is not nullable, for more efficient execution of natively-compiled stored procedures.
encryption_type	int	Applies to: [!INCLUDEsssql16-md] and later, [!INCLUDEssSDS_md]. Encryption type: 1 = Deterministic encryption 2 = Randomized encryption
encryption_type_desc	nvarchar(64)	Applies to: [!INCLUDEsssql16-md] and later, [!INCLUDEssSDS_md]. Encryption type description: RANDOMIZED DETERMINISTIC
encryption_algorithm_name	sysname	Applies to: [!INCLUDEsssql16-md] and later, [!INCLUDEssSDS_md]. Name of encryption algorithm. Only AEAD_AES_256_CBC_HMAC_SHA_512 is supported.
column_encryption_key_id	int	Applies to: [!INCLUDEsssql16-md] and later, [!INCLUDEssSDS_md]. ID of the CEK.
column_encryption_key_database_name	sysname	Applies to: [!INCLUDEsssql16-md] and later, [!INCLUDEssazuresynapse-md]. The name of the database where the column encryption key exists if different than the database of the column. NULL if the key exists in the same database as the column.

Permissions

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

See Also

Object Catalog Views (Transact-SQL)
Catalog Views (Transact-SQL)
Querying the SQL Server System Catalog FAQ
sys.parameters (Transact-SQL)
sys.all_parameters (Transact-SQL)