ABAP Select data from SAP table KOMLFFK_LI into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMLFFK_LI
*  INTO TABLE @DATA(IT_KOMLFFK_LI2).
*--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_KOMLFFK_LI INDEX 1 INTO DATA(WA_KOMLFFK_LI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMLFFK_LI>-WBELNV = 1.
<KOMLFFK_LI>-WBELN = 1.
<KOMLFFK_LI>-WDTYP_TEXT = 1.
<KOMLFFK_LI>-WFDAT = 1.
<KOMLFFK_LI>-LNRZB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMLFFK_LI-LZB_NAME1, sy-vline,
  WA_KOMLFFK_LI-KUNRG, sy-vline,
  WA_KOMLFFK_LI-NETWR, sy-vline,
  WA_KOMLFFK_LI-WAERL, sy-vline,
  WA_KOMLFFK_LI-RFBSK, sy-vline,
  WA_KOMLFFK_LI-STATUS_TEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMLFFK_LI 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_KOMLFFK_LI 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_KOMLFFK_LI INTO WA_KOMLFFK_LI.


*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 WBELNV
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFFK_LI-WBELNV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFFK_LI-WBELNV.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field AUGBL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMLFFK_LI-AUGBL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMLFFK_LI-AUGBL.
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_KOMLFFK_LI_STR, 
WBELNV TYPE STRING,
WBELN TYPE STRING,
WDTYP_TEXT TYPE STRING,
WFDAT TYPE STRING,
LNRZB TYPE STRING,
LZB_NAME1 TYPE STRING,
KUNRG TYPE STRING,
NETWR TYPE STRING,
WAERL TYPE STRING,
RFBSK TYPE STRING,
STATUS_TEXT TYPE STRING,
LFART TYPE STRING,
LFART_TEXT TYPE STRING,
LFTYP TYPE STRING,
LFTYP_TEXT TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
WRBTR TYPE STRING,
AUGDT TYPE STRING,
AUGCP TYPE STRING,
AUGBL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMLFFK_LI_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_KOMLFFK_LI_STR-WBELNV sy-vline 
WA_KOMLFFK_LI_STR-WBELN sy-vline 
WA_KOMLFFK_LI_STR-WDTYP_TEXT sy-vline 
WA_KOMLFFK_LI_STR-WFDAT sy-vline 
WA_KOMLFFK_LI_STR-LNRZB sy-vline 
WA_KOMLFFK_LI_STR-LZB_NAME1 sy-vline 
WA_KOMLFFK_LI_STR-KUNRG sy-vline 
WA_KOMLFFK_LI_STR-NETWR sy-vline 
WA_KOMLFFK_LI_STR-WAERL sy-vline 
WA_KOMLFFK_LI_STR-RFBSK sy-vline 
WA_KOMLFFK_LI_STR-STATUS_TEXT sy-vline 
WA_KOMLFFK_LI_STR-LFART sy-vline 
WA_KOMLFFK_LI_STR-LFART_TEXT sy-vline 
WA_KOMLFFK_LI_STR-LFTYP sy-vline 
WA_KOMLFFK_LI_STR-LFTYP_TEXT sy-vline 
WA_KOMLFFK_LI_STR-BELNR sy-vline 
WA_KOMLFFK_LI_STR-GJAHR sy-vline 
WA_KOMLFFK_LI_STR-BUZEI sy-vline 
WA_KOMLFFK_LI_STR-WRBTR sy-vline 
WA_KOMLFFK_LI_STR-AUGDT sy-vline 
WA_KOMLFFK_LI_STR-AUGCP sy-vline 
WA_KOMLFFK_LI_STR-AUGBL sy-vline      INTO ld_text SEPARATED BY SPACE.

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