sys.system_parameters (Transact-SQL)

APPLIES TO: yesSQL Server yesAzure SQL Database yesAzure Synapse Analytics (SQL DW) yesParallel Data Warehouse

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.

SQL Server only maintains default values for CLR objects in this catalog view; therefore, this column will always have a value of 0 for Transact-SQL objects. To view the default value of a parameter in a Transact-SQL 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.


The visibility of the metadata in catalog views is limited to securables that a user either owns or on which the user has been granted some permission. 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)