Example: Using Extra Columns - Analytics Database - Teradata Vantage

To make the example simple, constants are used when possible from a column.

SELECT * FROM DATASET_Table (
	ON (SELECT id, DatasetCol, 'CA' AS state, 'USA' AS nation 
	    FROM my_table WHERE id=1)
	USING rowexpr('$.schools[*]')  
	colexpr(
		'[ {"dotnotation" : "$.name",
		    "type" : "CHAR(20)"},
		   {"dotnotation" : "$.type",
              "type" : "VARCHAR(20)"}]')
) AS JT(id, name, "type", State, Nation);

Result:

 *** Query completed. 4 rows found. 5 columns returned.
 *** Total elapsed time was 1 second.

         id  name     type                  State  Nation
-----------  -------- --------------------  -----  ------
          1  Lake     elementary            CA     USA
          1  Madison  middle                CA     USA
          1  Rancho   high                  CA     USA
          1  UCI      college               CA     USA