Changes between Version 30 and Version 31 of DevWikiEmptyGeometry
- Timestamp:
- Nov 29, 2010, 5:48:16 AM (13 years ago)
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DevWikiEmptyGeometry
v30 v31 8 8 * ST_Union(empty, empty) == empty 9 9 * ST_Intersection(geometry, empty) == geometry 10 * fabian thinks this should be empty 11 * In set theory, A ∩ ∅ = ∅ 10 12 * ST_Intersection(empty, empty) == empty 11 13 * ST_Difference(geometry, empty) == geometry … … 18 20 * NULL (by the SQL standard) 19 21 * ST_Contains(geometry, empty) == FALSE (SQL Server says False) 22 * fabian thinks this should be TRUE 23 * In set theory, every set contains ∅ 20 24 * ST_Within(geometry, empty) == FALSE (SQL Server says False) 21 25 * ST_Contains(empty, geometry) == FALSE (SQL Server says False)