Returns an ST_Geometry type where the value represents the point set intersection of two ST_Geometry values.
Valid Data Types
All ST_Geometry types, including GeoSequence, but not the ST_GeomCollection type.
This method can be called on 3D geometries (those that include z coordinates). However, the z coordinate is ignored in method calculations. Consequently, any z coordinates returned by this method should be ignored. Teradata recommends using the Make_2D method to strip out the z coordinates of the return value.
Result Type
The type that the ST_Geometry return value represents is one from the possible set of types in the following table, depending on the argument types.
| a ∩ b | Ø | ST_Point | ST_LineString, GeoSequence | ST_Polygon | ST_MultiPoint | ST_MultiLineString | ST_MultiPolygon |
|---|---|---|---|---|---|---|---|
| Ø | Ø | Ø | Ø | Ø | Ø | Ø | Ø |
| ST_Point | Ø | R09 | R09 | R09 | R09 | R09 | R09 |
| ST_LineString, GeoSequence | Ø | R09 | R11 | R11 | R13 | R11 | R11 |
| ST_Polygon | Ø | R09 | R11 | R12 | R13 | R11 | R12 |
| ST_MultiPoint | Ø | R09 | R13 | R13 | R13 | R13 | R13 |
| ST_MultiLineString | Ø | R09 | R11 | R11 | R13 | R11 | R11 |
| ST_MultiPolygon | Ø | R09 | R11 | R12 | R13 | R11 | R12 |
Where:
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Vantage converts GeoSequence types that are involved in the ST_Intersection method to ST_LineString values. Therefore, ST_Intersection never returns a GeoSequence type.