sys.spatial_reference_systems (Transact-SQL)sys.spatial_reference_systems (Transact-SQL)
适用于：Applies to: 
SQL ServerSQL Server（所有支持的版本）SQL ServerSQL Server (all supported versions) Azure SQL 数据库Azure SQL DatabaseAzure SQL 数据库Azure SQL DatabaseSQL ServerSQL Server（所有支持的版本）SQL ServerSQL Server (all supported versions) Azure SQL 数据库Azure SQL DatabaseAzure SQL 数据库Azure SQL Database
列出 SQL ServerSQL Server 支持的空间引用系统 (SRID)。Lists the spatial reference systems (SRIDs) supported by SQL ServerSQL Server.
| 列名称Column name | 数据类型Data type | 说明Description |
|---|---|---|
| spatial_reference_idspatial_reference_id | intint | SQL ServerSQL Server 支持的 SRID。The SRID supported by SQL ServerSQL Server. |
| authority_nameauthority_name | nvarchar(128)nvarchar(128) | SRID 的授权。The authority of the SRID. |
| authorized_spatial_reference_idauthorized_spatial_reference_id | intint | Authority_name 中名为的机构提供的 SRID。The SRID given by the authority named in authority_name. |
| well_known_textwell_known_text | nvarchar(4000)nvarchar(4000) | SRID 的 WKT 表示形式。The WKT representation of the SRID. |
| unit_of_measureunit_of_measure | nvarchar(128)nvarchar(128) | 度量单位的名称。The name of the unit of measure. |
| unit_conversion_factorunit_conversion_factor | floatfloat | 以米为度量单位的长度。The length of the unit of measure in meters. |
权限Permissions
目录视图中仅显示用户拥有的安全对象的元数据，或用户对其拥有某些权限的安全对象的元数据。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.