Changes between Version 25 and Version 26 of DevWikiEmptyGeometry

Timestamp:

10/06/09 15:22:09 (15 years ago)

Author:

chodgson

Comment:

--

DevWikiEmptyGeometry

@@ -13 +13 @@
  * ST_Distance(geometry, empty) == NULL
  * ST_DWithin(geometry, empty, tolerance) == FALSE
- ** I think this should be null. It is intended to be equivalent to:
- *** distance( geometry, empty ) < tolerance
- ** which would be equivalent to NULL < tolerance - which would be NULL by the SQL standard
+   * chodgson thinks this should be null. It reduces to:
+     * ST_Distance( geometry, empty ) < tolerance
+     * NULL < tolerance 
+     * NULL (by the SQL standard)
  * ST_Contains(geometry, empty) == FALSE (SQL Server says False)
  * ST_Within(geometry, empty) == FALSE (SQL Server says False)