ABAP Select data from SAP table FIWTIN_PART_ONETIME into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FIWTIN_PART_ONETIME 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 FIWTIN_PART_ONETIME. 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 FIWTIN_PART_ONETIME 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_FIWTIN_PART_ONETIME TYPE STANDARD TABLE OF FIWTIN_PART_ONETIME,
      WA_FIWTIN_PART_ONETIME TYPE FIWTIN_PART_ONETIME,
      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: <FIWTIN_PART_ONETIME> TYPE FIWTIN_PART_ONETIME.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIWTIN_PART_ONETIME
*  INTO TABLE @DATA(IT_FIWTIN_PART_ONETIME2).
*--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_FIWTIN_PART_ONETIME INDEX 1 INTO DATA(WA_FIWTIN_PART_ONETIME2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIWTIN_PART_ONETIME>-ACCOUNT_NO = 1.
<FIWTIN_PART_ONETIME>-DOCNO = 1.
<FIWTIN_PART_ONETIME>-FIS_YEAR = 1.
<FIWTIN_PART_ONETIME>-PANNO = 1.
<FIWTIN_PART_ONETIME>-PANREFNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIWTIN_PART_ONETIME-CITY, sy-vline,
  WA_FIWTIN_PART_ONETIME-PINCODE, sy-vline,
  WA_FIWTIN_PART_ONETIME-STREET2, sy-vline,
  WA_FIWTIN_PART_ONETIME-STREET3, sy-vline,
  WA_FIWTIN_PART_ONETIME-STREET4, sy-vline,
  WA_FIWTIN_PART_ONETIME-NAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIWTIN_PART_ONETIME 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_FIWTIN_PART_ONETIME 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_FIWTIN_PART_ONETIME INTO WA_FIWTIN_PART_ONETIME.


*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.

*Conversion exit ALPHA, internal->external for field ACCOUNT_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIWTIN_PART_ONETIME-ACCOUNT_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIWTIN_PART_ONETIME-ACCOUNT_NO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOCNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIWTIN_PART_ONETIME-DOCNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIWTIN_PART_ONETIME-DOCNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field FIS_YEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FIWTIN_PART_ONETIME-FIS_YEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIWTIN_PART_ONETIME-FIS_YEAR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_FIWTIN_PART_ONETIME_STR, 
ACCOUNT_NO TYPE STRING,
DOCNO TYPE STRING,
FIS_YEAR TYPE STRING,
PANNO TYPE STRING,
PANREFNO TYPE STRING,
CITY TYPE STRING,
PINCODE TYPE STRING,
STREET2 TYPE STRING,
STREET3 TYPE STRING,
STREET4 TYPE STRING,
NAME TYPE STRING,
REGION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIWTIN_PART_ONETIME_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_FIWTIN_PART_ONETIME_STR-ACCOUNT_NO sy-vline 
WA_FIWTIN_PART_ONETIME_STR-DOCNO sy-vline 
WA_FIWTIN_PART_ONETIME_STR-FIS_YEAR sy-vline 
WA_FIWTIN_PART_ONETIME_STR-PANNO sy-vline 
WA_FIWTIN_PART_ONETIME_STR-PANREFNO sy-vline 
WA_FIWTIN_PART_ONETIME_STR-CITY sy-vline 
WA_FIWTIN_PART_ONETIME_STR-PINCODE sy-vline 
WA_FIWTIN_PART_ONETIME_STR-STREET2 sy-vline 
WA_FIWTIN_PART_ONETIME_STR-STREET3 sy-vline 
WA_FIWTIN_PART_ONETIME_STR-STREET4 sy-vline 
WA_FIWTIN_PART_ONETIME_STR-NAME sy-vline 
WA_FIWTIN_PART_ONETIME_STR-REGION sy-vline      INTO ld_text SEPARATED BY SPACE.

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