| title | description | author | ms.author | ms.date | ms.service | ms.subservice | ms.topic | ms.custom | f1_keywords | helpviewer_keywords | dev_langs | monikerRange | |||||
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STIsSimple (geometry Data Type) |
STIsSimple (geometry Data Type) |
MladjoA |
mlandzic |
08/03/2017 |
sql |
t-sql |
reference |
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|
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=azuresqldb-current || >=sql-server-2016 || >=sql-server-linux-2017 || =azuresqldb-mi-current || =fabric |
[!INCLUDE SQL Server Azure SQL Database Azure SQL Managed Instance FabricSQLDB]
Returns 1 if a geometry instance is simple, as defined by the Open Geospatial Consortium (OGC). Returns 0 if a geometry instance is not simple.
.STIsSimple ( )
[!INCLUDEssNoVersion] return type: bit
CLR return type: SqlBoolean
To be simple, a geometry instance must meet all of the following requirements:
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Each figure of the instance must not intersect itself, except at its endpoints.
-
No two figures of the instance can intersect each other at a point that is not in both of their boundaries.
The following example creates a nonsimple LineString instance that intersects itself and uses STIsSimple() to test whether the LineString is simple.
DECLARE @g geometry;
SET @g = geometry::STGeomFromText('LINESTRING(0 0, 2 2, 0 2, 2 0)', 0);
SELECT @g.STIsSimple();