CREATE/REPLACE FUNCTION Examples | Teradata Vantage - Example: Defining an SQL UDF With a LOB Parameter - Teradata Vantage - Analytics Database

The following CREATE FUNCTION request specifies a CLOB as a parameter in its definition.

     CREATE FUNCTION test.myudf (a CLOB, b INTEGER, c INTEGER, 
                                 d CHARACTER (100))
     RETURNS CHAR(50)
     LANGUAGE SQL
     DETERMINISTIC
     CONTAINS SQL
     SPECIFIC test.myudf
     CALLED ON NULL INPUT
     SQL SECURITY DEFINER
     COLLATION INVOKER
     INLINE TYPE 1
     RETURN d || (SUBSTRING(a FROM b FOR c));