Changes between Version 24 and Version 25 of DevWikiEmptyGeometry

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Timestamp:
10/06/09 15:18:25 (4 years ago)
Author:
chodgson
Comment:

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  • DevWikiEmptyGeometry

    v24 v25  
    1212 * ST_Difference(empty, geometry) == empty 
    1313 * ST_Distance(geometry, empty) == NULL 
    14  * ST_DWithin(geometry, empty, tolerance) == FALSE (if distance = null, shouldn't DWithin be null?) 
     14 * ST_DWithin(geometry, empty, tolerance) == FALSE 
     15 ** I think this should be null. It is intended to be equivalent to: 
     16 *** distance( geometry, empty ) < tolerance 
     17 ** which would be equivalent to NULL < tolerance - which would be NULL by the SQL standard 
    1518 * ST_Contains(geometry, empty) == FALSE (SQL Server says False) 
    1619 * ST_Within(geometry, empty) == FALSE (SQL Server says False)