Example: Creating a Function with Geospatial Input Arguments - Teradata Vantage

The following CREATE FUNCTION request has input parameters of the ST_GEOMETRY type, specifies the method st_within in its RETURN statement, and returns an INTEGER value from the invocation of st_within.

     CREATE FUNCTION test.geospatial_type_udf 
       (a ST_GEOMETRY, b ST_GEOMETRY)
     RETURNS INTEGER
     LANGUAGE SQL
     DETERMINISTIC
     CONTAINS SQL
     SPECIFIC test.geospatial_type_UDF
     CALLED ON NULL INPUT
     SQL SECURITY DEFINER
     COLLATION INVOKER
     INLINE TYPE 1
     RETURN a.st_within(b);