ABAP Select data from SAP table HRNZ_RETURN_FILE_INPUT_MESSAGE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRNZ_RETURN_FILE_INPUT_MESSAGE table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to HRNZ_RETURN_FILE_INPUT_MESSAGE. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the HRNZ_RETURN_FILE_INPUT_MESSAGE table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_HRNZ_RETURN_FILE_INPUT_MESSAGE TYPE STANDARD TABLE OF HRNZ_RETURN_FILE_INPUT_MESSAGE,
      WA_HRNZ_RETURN_FILE_INPUT_MESSAGE TYPE HRNZ_RETURN_FILE_INPUT_MESSAGE,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <HRNZ_RETURN_FILE_INPUT_MESSAGE> TYPE HRNZ_RETURN_FILE_INPUT_MESSAGE.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRNZ_RETURN_FILE_INPUT_MESSAGE.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRNZ_RETURN_FILE_INPUT_MESSAGE
  INTO TABLE IT_HRNZ_RETURN_FILE_INPUT_MESSAGE.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRNZ_RETURN_FILE_INPUT_MESSAGE
*  INTO TABLE @DATA(IT_HRNZ_RETURN_FILE_INPUT_MESSAGE2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_HRNZ_RETURN_FILE_INPUT_MESSAGE INDEX 1 INTO DATA(WA_HRNZ_RETURN_FILE_INPUT_MESSAGE2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRNZ_RETURN_FILE_INPUT_MESSAGE ASSIGNING <HRNZ_RETURN_FILE_INPUT_MESSAGE>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRNZ_RETURN_FILE_INPUT_MESSAGE>-CONTROLLER = 1.
<HRNZ_RETURN_FILE_INPUT_MESSAGE>-RETURN_FILE_REQUEST_MSG = 1.
<HRNZ_RETURN_FILE_INPUT_MESSAGE>-CONTROLLER = 1.
<HRNZ_RETURN_FILE_INPUT_MESSAGE>-FILE_REQUEST_WRAPPER = 1.
<HRNZ_RETURN_FILE_INPUT_MESSAGE>-CONTROLLER = 1.

ENDLOOP.

LOOP AT IT_HRNZ_RETURN_FILE_INPUT_MESSAGE INTO WA_HRNZ_RETURN_FILE_INPUT_MESSAGE.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRNZ_RETURN_FILE_INPUT_MESSAGE-FILE_REQUEST, sy-vline,
  WA_HRNZ_RETURN_FILE_INPUT_MESSAGE-CONTROLLER, sy-vline,
  WA_HRNZ_RETURN_FILE_INPUT_MESSAGE-FILE_HEADER, sy-vline,
  WA_HRNZ_RETURN_FILE_INPUT_MESSAGE-CONTROLLER, sy-vline,
  WA_HRNZ_RETURN_FILE_INPUT_MESSAGE-BASE, sy-vline,
  WA_HRNZ_RETURN_FILE_INPUT_MESSAGE-CONTROLLER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRNZ_RETURN_FILE_INPUT_MESSAGE you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_HRNZ_RETURN_FILE_INPUT_MESSAGE TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_HRNZ_RETURN_FILE_INPUT_MESSAGE INTO WA_HRNZ_RETURN_FILE_INPUT_MESSAGE.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR, 
CONTROLLER TYPE STRING,
RETURN_FILE_REQUEST_MSG TYPE STRING,
CONTROLLER TYPE STRING,
FILE_REQUEST_WRAPPER TYPE STRING,
CONTROLLER TYPE STRING,
FILE_REQUEST TYPE STRING,
CONTROLLER TYPE STRING,
FILE_HEADER TYPE STRING,
CONTROLLER TYPE STRING,
BASE TYPE STRING,
CONTROLLER TYPE STRING,
SOFTWARE_PROVIDER_DATA TYPE STRING,
CONTROLLER TYPE STRING,
SOFTWARE_PROVIDER TYPE STRING,
SOFTWARE_PLATFORM TYPE STRING,
SOFTWARE_RELEASE TYPE STRING,
IDENTIFIER TYPE STRING,
CONTROLLER TYPE STRING,
IDENTIFIER_VALUE_TYPE TYPE STRING,
CONTENT TYPE STRING,
ACCOUNT_TYPE TYPE STRING,
PERIOD_END_DATE TYPE STRING,
MAJOR_FORM_TYPE TYPE STRING,
MINOR_FORM_TYPE TYPE STRING,
FILE_BODY TYPE STRING,
CONTROLLER TYPE STRING,
STANDARD_FIELDS TYPE STRING,
CONTROLLER TYPE STRING,
IS_NIL_RETURN TYPE STRING,
IS_FINAL_RETURN TYPE STRING,
AMENDMENT_REQUEST TYPE STRING,
CONTROLLER TYPE STRING,
IS_AMENDED TYPE STRING,
AMEND_REASON TYPE STRING,
AMEND_DETAILS TYPE STRING,
CREDIT_TRANSFER_REQUEST TYPE STRING,
FORM_FIELDS TYPE STRING,
CONTROLLER TYPE STRING,
SUBMISSION_KEY TYPE STRING,
IS_REVERSE_REPLACE TYPE STRING,
PAY_DAY_DATE TYPE STRING,
PI_IRD_NUMBER TYPE STRING,
CONTACT_NAME TYPE STRING,
CONTACT_PHONE_NUMBER TYPE STRING,
CONTACT_EMAIL TYPE STRING,
EMPLOYEE_FIELDS TYPE STRING,
CONTROLLER TYPE STRING,
EMPLOYEE TYPE STRING,
TOTAL_GROSS_EARNINGS TYPE STRING,
TOTAL_EARNINGS_NOT_LIABLE_ACC TYPE STRING,
TOTAL_PAYESCHEDULAR_TAX_DEDUCT TYPE STRING,
TOTAL_CHILD_SUPPORT_DEDUCTIONS TYPE STRING,
TOTAL_STUDENT_LOANS_DEDUCTIONS TYPE STRING,
TOTAL_KIWISAVER_EMPLOYER_CONTR TYPE STRING,
TOTAL_KIWISAVER_DEDUCTIONS TYPE STRING,
TOTAL_TAX_CREDIT_PAYROLL_DONAT TYPE STRING,
TOTAL_ESCTDEDUCTED TYPE STRING,
TOTAL_FAMILY_TAX_CREDITS TYPE STRING,
TOTAL_AMOUNT_PAYABLE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CONTROLLER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-RETURN_FILE_REQUEST_MSG sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CONTROLLER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-FILE_REQUEST_WRAPPER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CONTROLLER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-FILE_REQUEST sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CONTROLLER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-FILE_HEADER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CONTROLLER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-BASE sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CONTROLLER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-SOFTWARE_PROVIDER_DATA sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CONTROLLER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-SOFTWARE_PROVIDER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-SOFTWARE_PLATFORM sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-SOFTWARE_RELEASE sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-IDENTIFIER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CONTROLLER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-IDENTIFIER_VALUE_TYPE sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CONTENT sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-ACCOUNT_TYPE sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-PERIOD_END_DATE sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-MAJOR_FORM_TYPE sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-MINOR_FORM_TYPE sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-FILE_BODY sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CONTROLLER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-STANDARD_FIELDS sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CONTROLLER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-IS_NIL_RETURN sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-IS_FINAL_RETURN sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-AMENDMENT_REQUEST sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CONTROLLER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-IS_AMENDED sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-AMEND_REASON sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-AMEND_DETAILS sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CREDIT_TRANSFER_REQUEST sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-FORM_FIELDS sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CONTROLLER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-SUBMISSION_KEY sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-IS_REVERSE_REPLACE sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-PAY_DAY_DATE sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-PI_IRD_NUMBER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CONTACT_NAME sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CONTACT_PHONE_NUMBER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CONTACT_EMAIL sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-EMPLOYEE_FIELDS sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-CONTROLLER sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-EMPLOYEE sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-TOTAL_GROSS_EARNINGS sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-TOTAL_EARNINGS_NOT_LIABLE_ACC sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-TOTAL_PAYESCHEDULAR_TAX_DEDUCT sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-TOTAL_CHILD_SUPPORT_DEDUCTIONS sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-TOTAL_STUDENT_LOANS_DEDUCTIONS sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-TOTAL_KIWISAVER_EMPLOYER_CONTR sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-TOTAL_KIWISAVER_DEDUCTIONS sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-TOTAL_TAX_CREDIT_PAYROLL_DONAT sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-TOTAL_ESCTDEDUCTED sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-TOTAL_FAMILY_TAX_CREDITS sy-vline 
WA_HRNZ_RETURN_FILE_INPUT_MESSAGE_STR-TOTAL_AMOUNT_PAYABLE sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.