ABAP Select data from SAP table FKK_WORKLIST_ODATA_WL_DUECRED into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_WORKLIST_ODATA_WL_DUECRED
*  INTO TABLE @DATA(IT_FKK_WORKLIST_ODATA_WL_DUECRED2).
*--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_FKK_WORKLIST_ODATA_WL_DUECRED INDEX 1 INTO DATA(WA_FKK_WORKLIST_ODATA_WL_DUECRED2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_WORKLIST_ODATA_WL_DUECRED>-ODATA_KEY = 1.
<FKK_WORKLIST_ODATA_WL_DUECRED>-BETRW = 1.
<FKK_WORKLIST_ODATA_WL_DUECRED>-NUMBER = 1.
<FKK_WORKLIST_ODATA_WL_DUECRED>-BALANCE = 1.
<FKK_WORKLIST_ODATA_WL_DUECRED>-DEBITS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_WORKLIST_ODATA_WL_DUECRED-CREDITS, sy-vline,
  WA_FKK_WORKLIST_ODATA_WL_DUECRED-WL_STATE, sy-vline,
  WA_FKK_WORKLIST_ODATA_WL_DUECRED-WL_STATETXT, sy-vline,
  WA_FKK_WORKLIST_ODATA_WL_DUECRED-WL_CRDAT, sy-vline,
  WA_FKK_WORKLIST_ODATA_WL_DUECRED-WL_CRTIM, sy-vline,
  WA_FKK_WORKLIST_ODATA_WL_DUECRED-GPART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_WORKLIST_ODATA_WL_DUECRED 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_FKK_WORKLIST_ODATA_WL_DUECRED 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_FKK_WORKLIST_ODATA_WL_DUECRED INTO WA_FKK_WORKLIST_ODATA_WL_DUECRED.


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

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

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

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

*Conversion exit ALPHA, internal->external for field VTREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_WORKLIST_ODATA_WL_DUECRED-VTREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_WORKLIST_ODATA_WL_DUECRED-VTREF.
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_FKK_WORKLIST_ODATA_WL_DUECRED_STR, 
ODATA_KEY TYPE STRING,
BETRW TYPE STRING,
NUMBER TYPE STRING,
BALANCE TYPE STRING,
DEBITS TYPE STRING,
CREDITS TYPE STRING,
WL_STATE TYPE STRING,
WL_STATETXT TYPE STRING,
WL_CRDAT TYPE STRING,
WL_CRTIM TYPE STRING,
GPART TYPE STRING,
OPBEL TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
OPUPZ TYPE STRING,
BUKRS TYPE STRING,
VKTYP TYPE STRING,
NAME_LAST TYPE STRING,
NAME_FIRST TYPE STRING,
WAERS TYPE STRING,
GROUPBY TYPE STRING,
SEGMENT TYPE STRING,
SPART TYPE STRING,
GSBER TYPE STRING,
POSTALCODE TYPE STRING,
VKONT TYPE STRING,
KOFIZ TYPE STRING,
BLART TYPE STRING,
HVORG TYPE STRING,
TVORG TYPE STRING,
STAKZ TYPE STRING,
FAEDN TYPE STRING,
BEGRU TYPE STRING,
GPART_NAME TYPE STRING,
VTREF TYPE STRING,
SUBAP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_WORKLIST_ODATA_WL_DUECRED_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_FKK_WORKLIST_ODATA_WL_DUECRED_STR-ODATA_KEY sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-BETRW sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-NUMBER sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-BALANCE sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-DEBITS sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-CREDITS sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-WL_STATE sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-WL_STATETXT sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-WL_CRDAT sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-WL_CRTIM sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-GPART sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-OPBEL sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-OPUPW sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-OPUPK sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-OPUPZ sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-BUKRS sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-VKTYP sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-NAME_LAST sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-NAME_FIRST sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-WAERS sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-GROUPBY sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-SEGMENT sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-SPART sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-GSBER sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-POSTALCODE sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-VKONT sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-KOFIZ sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-BLART sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-HVORG sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-TVORG sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-STAKZ sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-FAEDN sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-BEGRU sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-GPART_NAME sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-VTREF sy-vline 
WA_FKK_WORKLIST_ODATA_WL_DUECRED_STR-SUBAP sy-vline      INTO ld_text SEPARATED BY SPACE.

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