Changes between Version 12 and Version 13 of DevWikiEmptyGeometry


Ignore:
Timestamp:
Oct 6, 2009, 11:01:13 AM (15 years ago)
Author:
robe
Comment:

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  • DevWikiEmptyGeometry

    v12 v13  
    2525}}}
    2626 * ST_Difference(geometry, empty) == geometry
     27
     28{{{
     29SQL Server 2008 Geometry:
     30   SELECT (Geometry::STGeomFromText('POINT(1 3)',4326).STDifference(Geometry::STGeomFromText('POLYGON EMPTY',4326))).STAsText()
     31  => POINT (1 3)
     32}}}
     33
    2734 * ST_Difference(empty, geometry) == empty
     35{{{
     36SQL Server 2008 Geometry:
     37 SELECT (Geometry::STGeomFromText('POLYGON EMPTY',4326).STDifference(Geometry::STGeomFromText('POLYGON EMPTY',4326))).STAsText()
     38  => GEOMETRY COLLECTION EMPTY
     39}}}
     40
    2841 * ST_Distance(geometry, empty) == NULL
    2942 * ST_DWithin(geometry, empty, tolerance) == FALSE