Returns the transform definition of the spatial reference system that is the source of the projection.
SyntaxST_SpatialRefSys::ST_GetUnProjectedTransformDefinition(transform-definition)
Parameters| Name | Type | Description |
|---|---|---|
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transform-definition |
LONG VARCHAR |
The spatial reference system transform definition text |
ReturnsLONG VARCHAR Returns a text string defining the transform definition of the unprojected spatial reference system.
RemarksIf the transform-definition parameter defines a projected spatial reference system, returns the definition of the source spatial reference system.
Standards and compatibilitySQL/MM (ISO/IEC 13249-3: 2006) Vendor extension
ExampleThe following example returns the result +proj=latlong +a=6371000 +b=6371000 +no_defs.
SELECT ST_SpatialRefSys::ST_GetUnProjectedTransformDefinition( '+proj=robin +lon_0=0 +x_0=0 +y_0=0 +a=6371000 +b=6371000 +units=m no_defs' ) |
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