This example uses a one-dimensional ARRAY type with a CHARACTER element type that will be used as the data type for the single parameter a1 for the function my_array_udf.
The first step is to create an appropriate one-dimensional ARRAY type. The first CREATE TYPE request uses Oracle-compatible syntax to define the ARRAY type phonenumbers_ary.
CREATE TYPE phonenumbers_ary AS VARRAY(5) OF CHAR(10);
The second CREATE TYPE request uses Teradata-ANSI style syntax to define the same type.
CREATE TYPE phonenumbers_ary AS CHAR(10) ARRAY[5];
The following CREATE FUNCTION request creates the function my_array_udf using an SQL parameter style and uses the one-dimensional ARRAY type phonenumbers_ary as the data type of its single parameter, a1.
CREATE FUNCTION my_array_udf( a1 phonenumbers_ary) RETURNS VARCHAR(100) NO SQL PARAMETER STYLE SQL DETERMINISTIC LANGUAGE C EXTERNAL NAME 'CS!my_array_udf!my_array_udf.c'; void my_array_udf ( ARRAY_HANDLE *ary_handle, VARCHAR_LATIN *result, int *indicator_ary, int *indicator_result, char sqlstate[6], SQL_TEXT extname[129], SQL_TEXT specific_name[129], SQL_TEXT error_message[257]) { /* body function */ }
The following CREATE FUNCTION request creates the same function, but uses the TD_GENERAL parameter style.
CREATE FUNCTION my_array_udf ( a1 phonenumbers_ary) RETURNS VARCHAR(100) NO SQL PARAMETER STYLE TD_GENERAL DETERMINISTIC LANGUAGE C EXTERNAL NAME 'CS!my_array_udf!my_array_udf.c'; void my_array_udf ( ARRAY_HANDLE *ary_handle, VARCHAR_LATIN *result, char sqlstate[6]) { /* body function */ }