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st_reverse function

Applies to: check marked yes Databricks Runtime 17.1 and above

Important

This feature is in Public Preview.

Reverses the input GEOGRAPHY or GEOMETRY value.

Syntax

st_reverse ( geoExpr )

Arguments

  • geoExpr: A GEOGRAPHY or GEOMETRY value.

Returns

A value of type GEOGRAPHY or GEOMETRY, representing the reversed geospatial value.

The SRID value of the output GEOGRAPHY or GEOMETRY value is equal to that of the input value.

The dimension of the output GEOGRAPHY or GEOMETRY value is the same as that of the input value.

The function returns NULL if any of the inputs is NULL.

Examples

-- Reverse a linestring geometry.
> SELECT st_astext(st_reverse(st_geomfromtext('LINESTRING(1 2,3 4,5 6)')))
  LINESTRING(5 6,3 4,1 2)
-- Reverse a multipoint geography.
> SELECT st_asewkt(st_reverse(st_geogfromtext('MULTIPOINT((1 2),EMPTY,(3 4),(5 6),EMPTY)')))
  SRID=4326;MULTIPOINT((1 2),EMPTY,(3 4),(5 6),EMPTY)