sys.selective_xml_index_paths (Transact-SQL)
Applies to: 
SQL Server
Available beginning in SQL Server 2012 (11.x) Service Pack 1, each row in sys.selective_xml_index_paths represents one promoted path for particular selective xml index.
If you create a selective xml index on xmlcol of table T using following statement,
CREATE SELECTIVE XML INDEX sxi1 ON T(xmlcol)
FOR ( path1 = '/a/b/c' AS XQUERY 'xs:string',
path2 = '/a/b/d' AS XQUERY 'xs:double'
)
There will be two new rows in sys.selective_xml_index_paths corresponding to the index sxi1.
| Column name | Data type | Description |
|---|---|---|
| object_id | int | ID of table with XML column. |
| index_id | int | Unique id of the selective xml index. |
| path_id | int | Promoted XML path id. |
| path | nvarchar(4000) | Promoted path. For example, '/a/b/c/d/e'. |
| name | sysname | Path name. |
| path_type | tinyint | 0 = XQUERY 1 = SQL |
| path_type_desc | sysname | Based on path_type value 'XQUERY' or 'SQL'. |
| xml_component_id | int | Unique ID of the XML schema component in the database. |
| xquery_type_description | nvarchar(4000) | Name of the specified xsd type. |
| is_xquery_type_inferred | bit | 1 = type is inferred. |
| xquery_max_length | smallint | Max length (in character of xsd type). |
| is_xquery_max_length_inferred | bit | 1 = maximum length is inferred. |
| is_node | bit | 0 = node() hint not present. 1 = node() optimization hint applied. |
| system_type_id | tinyint | ID of the system type of the column. |
| user_type_id | tinyint | ID of the user type of the column. |
| max_length | smallint | Max Length (in bytes) of the type. -1 = Column data type is varchar(max), nvarchar(max), varbinary(max), or xml. |
| precision | tinyint | Maximum precision of the type if it is numeric-based. Otherwise 0. |
| scale | tinyint | Maximum scale of the type if it is numeric-based. Otherwise, 0. |
| collation_name | sysname | Name of the collation of the type if it is character-based. Otherwise, NULL. |
| is_singleton | bit | 0 = SINGLETON hint not present. 1 = SINGLETON optimization hint applied. |
Permissions
The visibility of the metadata in catalog views is limited to securables that a user either owns, or on which the user was granted some permission. For more information, see Metadata Visibility Configuration.
See Also
Catalog Views (Transact-SQL)
XML Schemas (XML Type System) Catalog Views (Transact-SQL)