How to create a spatial view in SQL?
To create a view, the user must have at least SELECT privileges on each table or feature class included in the view, in addition to the CREATE VIEW privilege in the database. The reg_id is the not null, integer ObjectID column from the region feature class. Region is the spatial column from the region feature class.
Are there spatial indexes in SQL Server 2012?
For a detailed description and examples of spatial features introduced in SQL Server 2012 (11.x), including features that affect spatial indexes, download the white paper, New Spatial Features in SQL Server 2012.
Is there an auto grid for spatial indexes?
The GEOMETRY_AUTO_GRID / GEOGRAPHY_AUTO_GRID tessellation scheme options do not populate these columns. sys.spatial_index_tessellations catalog view has NULL values for these columns when the auto grid options are used.
How is a bounding box related to a spatial index?
A bounding box corresponds to some portion of an application’s spatial data. Whether the bounding-box of the index completely contains the data stored in the spatial column, or only contains a portion, is up to the application. Only operations computed on objects that are entirely inside of the bounding box benefit from the spatial index.
Do you have to include objectId in spatial view in ArcGIS?
When you create a spatial view, you must include the ObjectID column from the same table as the spatial column. If the ObjectID from the feature class is not included, the unique relationship between the ObjectID and shape column may be violated, resulting in inaccurate results when queried or rendered in ArcGIS.
How are spatial views registered in the geodatabase?
As with other database views, spatial views are not registered with the geodatabase. If you choose to replace views created by ArcGIS by altering the view afterward using SQL or other database tools, you are taking responsibility for not only the query’s correctness and efficiency but also its relevance and suitability for use with ArcGIS clients.
Can you create a database view in ArcGIS?
Therefore, you can use views to control access to rows or columns in business tables. You can use the Create Database View tool or the database context menu in ArcGIS for Desktop to create a database view, or use the native SQL of your database management system (DBMS).