16.20 - Example: Defining an SQL UDF With a Period Function in its RETURN Statement - Teradata Database - Teradata Vantage NewSQL Engine

The following CREATE FUNCTION request specifies a bound Period function (END) and a proximity function (PRIOR) in its RETURN statement.

     CREATE FUNCTION test.myudf (a PERIOD(TIME))
     RETURNS PERIOD(TIME)
     LANGUAGE SQL
     DETERMINISTIC
     CONTAINS SQL
     SPECIFIC test.myudf
     CALLED ON NULL INPUT
     SQL SECURITY DEFINER
     COLLATION INVOKER
     INLINE TYPE 1
     RETURN PRIOR(END(a));