ABAP Select data from SAP table TMFK_APPEND_S40 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TMFK_APPEND_S40 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 TMFK_APPEND_S40. 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 TMFK_APPEND_S40 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_TMFK_APPEND_S40 TYPE STANDARD TABLE OF TMFK_APPEND_S40,
      WA_TMFK_APPEND_S40 TYPE TMFK_APPEND_S40,
      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: <TMFK_APPEND_S40> TYPE TMFK_APPEND_S40.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TMFK_APPEND_S40.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TMFK_APPEND_S40
  INTO TABLE IT_TMFK_APPEND_S40.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TMFK_APPEND_S40
*  INTO TABLE @DATA(IT_TMFK_APPEND_S402).
*--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_TMFK_APPEND_S40 INDEX 1 INTO DATA(WA_TMFK_APPEND_S402).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TMFK_APPEND_S40 ASSIGNING <TMFK_APPEND_S40>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TMFK_APPEND_S40>-LFART_TYPE = 1.
<TMFK_APPEND_S40>-INPUT_LZBKZ = 1.
<TMFK_APPEND_S40>-TAX_DATA_CUSTOMER = 1.
<TMFK_APPEND_S40>-USE_OUTPUT_CONTROL = 1.
<TMFK_APPEND_S40>-NUMBER_RANGE_GRP = 1.

ENDLOOP.

LOOP AT IT_TMFK_APPEND_S40 INTO WA_TMFK_APPEND_S40.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TMFK_APPEND_S40-KTOSL_PARTNER_CLEAR, sy-vline,
  WA_TMFK_APPEND_S40-FI_CA_ACTIVE, sy-vline,
  WA_TMFK_APPEND_S40-MESSAGING_SOURCE_DOC, sy-vline,
  WA_TMFK_APPEND_S40-SUMMARIZATION_MODE, sy-vline,
  WA_TMFK_APPEND_S40-KUNNR_COPA, sy-vline,
  WA_TMFK_APPEND_S40-MATERIAL_VALID_CHECK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TMFK_APPEND_S40 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_TMFK_APPEND_S40 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_TMFK_APPEND_S40 INTO WA_TMFK_APPEND_S40.


*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_TMFK_APPEND_S40_STR, 
LFART_TYPE TYPE STRING,
INPUT_LZBKZ TYPE STRING,
TAX_DATA_CUSTOMER TYPE STRING,
USE_OUTPUT_CONTROL TYPE STRING,
NUMBER_RANGE_GRP TYPE STRING,
KTOSL_PARTNER_CLEAR TYPE STRING,
FI_CA_ACTIVE TYPE STRING,
MESSAGING_SOURCE_DOC TYPE STRING,
SUMMARIZATION_MODE TYPE STRING,
KUNNR_COPA TYPE STRING,
MATERIAL_VALID_CHECK TYPE STRING,
FILL_AWITEM TYPE STRING,
LFART_FOR_NEGATIVE_AMOUNT TYPE STRING,
CASH_MANAGEMENT_INACTIVE TYPE STRING,
TEXT_CHANGE_ALLOWED TYPE STRING,
HANDLE_NEGATIVE_AMOUNT TYPE STRING,
REPORTING_DISPLAY_VARIANT TYPE STRING,
NUMBER_RANGE_GRP_XBLNR TYPE STRING,
CANCEL_VARIANT_VSL TYPE STRING,
MERGING_COPIES TYPE STRING,
TRANSFER_XBLNR_FI_SDL TYPE STRING,
BO_TYPE TYPE STRING,
VISIBILITY_GROUP TYPE STRING,
AR_GROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TMFK_APPEND_S40_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_TMFK_APPEND_S40_STR-LFART_TYPE sy-vline 
WA_TMFK_APPEND_S40_STR-INPUT_LZBKZ sy-vline 
WA_TMFK_APPEND_S40_STR-TAX_DATA_CUSTOMER sy-vline 
WA_TMFK_APPEND_S40_STR-USE_OUTPUT_CONTROL sy-vline 
WA_TMFK_APPEND_S40_STR-NUMBER_RANGE_GRP sy-vline 
WA_TMFK_APPEND_S40_STR-KTOSL_PARTNER_CLEAR sy-vline 
WA_TMFK_APPEND_S40_STR-FI_CA_ACTIVE sy-vline 
WA_TMFK_APPEND_S40_STR-MESSAGING_SOURCE_DOC sy-vline 
WA_TMFK_APPEND_S40_STR-SUMMARIZATION_MODE sy-vline 
WA_TMFK_APPEND_S40_STR-KUNNR_COPA sy-vline 
WA_TMFK_APPEND_S40_STR-MATERIAL_VALID_CHECK sy-vline 
WA_TMFK_APPEND_S40_STR-FILL_AWITEM sy-vline 
WA_TMFK_APPEND_S40_STR-LFART_FOR_NEGATIVE_AMOUNT sy-vline 
WA_TMFK_APPEND_S40_STR-CASH_MANAGEMENT_INACTIVE sy-vline 
WA_TMFK_APPEND_S40_STR-TEXT_CHANGE_ALLOWED sy-vline 
WA_TMFK_APPEND_S40_STR-HANDLE_NEGATIVE_AMOUNT sy-vline 
WA_TMFK_APPEND_S40_STR-REPORTING_DISPLAY_VARIANT sy-vline 
WA_TMFK_APPEND_S40_STR-NUMBER_RANGE_GRP_XBLNR sy-vline 
WA_TMFK_APPEND_S40_STR-CANCEL_VARIANT_VSL sy-vline 
WA_TMFK_APPEND_S40_STR-MERGING_COPIES sy-vline 
WA_TMFK_APPEND_S40_STR-TRANSFER_XBLNR_FI_SDL sy-vline 
WA_TMFK_APPEND_S40_STR-BO_TYPE sy-vline 
WA_TMFK_APPEND_S40_STR-VISIBILITY_GROUP sy-vline 
WA_TMFK_APPEND_S40_STR-AR_GROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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