ABAP Select data from SAP table DFKKDOUBTD_RET_W into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKDOUBTD_RET_W
*  INTO TABLE @DATA(IT_DFKKDOUBTD_RET_W2).
*--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_DFKKDOUBTD_RET_W INDEX 1 INTO DATA(WA_DFKKDOUBTD_RET_W2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKDOUBTD_RET_W>-MANDT = 1.
<DFKKDOUBTD_RET_W>-LAUFD = 1.
<DFKKDOUBTD_RET_W>-LAUFI = 1.
<DFKKDOUBTD_RET_W>-INTNR = 1.
<DFKKDOUBTD_RET_W>-LFDN1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKDOUBTD_RET_W-LFDN2, sy-vline,
  WA_DFKKDOUBTD_RET_W-OPUPW, sy-vline,
  WA_DFKKDOUBTD_RET_W-WAERS, sy-vline,
  WA_DFKKDOUBTD_RET_W-OFFBT, sy-vline,
  WA_DFKKDOUBTD_RET_W-BUDAT, sy-vline,
  WA_DFKKDOUBTD_RET_W-GRUND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKDOUBTD_RET_W 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_DFKKDOUBTD_RET_W 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_DFKKDOUBTD_RET_W INTO WA_DFKKDOUBTD_RET_W.


*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_DFKKDOUBTD_RET_W_STR, 
MANDT TYPE STRING,
LAUFD TYPE STRING,
LAUFI TYPE STRING,
INTNR TYPE STRING,
LFDN1 TYPE STRING,
LFDN2 TYPE STRING,
OPUPW TYPE STRING,
WAERS TYPE STRING,
OFFBT TYPE STRING,
BUDAT TYPE STRING,
GRUND TYPE STRING,
PROZT TYPE STRING,
FAEDN TYPE STRING,
BETRW TYPE STRING,
RGRND TYPE STRING,
REDAT TYPE STRING,
LOEKZ TYPE STRING,
WBBTR TYPE STRING,
ECL_RATE TYPE STRING,
RTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKDOUBTD_RET_W_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_DFKKDOUBTD_RET_W_STR-MANDT sy-vline 
WA_DFKKDOUBTD_RET_W_STR-LAUFD sy-vline 
WA_DFKKDOUBTD_RET_W_STR-LAUFI sy-vline 
WA_DFKKDOUBTD_RET_W_STR-INTNR sy-vline 
WA_DFKKDOUBTD_RET_W_STR-LFDN1 sy-vline 
WA_DFKKDOUBTD_RET_W_STR-LFDN2 sy-vline 
WA_DFKKDOUBTD_RET_W_STR-OPUPW sy-vline 
WA_DFKKDOUBTD_RET_W_STR-WAERS sy-vline 
WA_DFKKDOUBTD_RET_W_STR-OFFBT sy-vline 
WA_DFKKDOUBTD_RET_W_STR-BUDAT sy-vline 
WA_DFKKDOUBTD_RET_W_STR-GRUND sy-vline 
WA_DFKKDOUBTD_RET_W_STR-PROZT sy-vline 
WA_DFKKDOUBTD_RET_W_STR-FAEDN sy-vline 
WA_DFKKDOUBTD_RET_W_STR-BETRW sy-vline 
WA_DFKKDOUBTD_RET_W_STR-RGRND sy-vline 
WA_DFKKDOUBTD_RET_W_STR-REDAT sy-vline 
WA_DFKKDOUBTD_RET_W_STR-LOEKZ sy-vline 
WA_DFKKDOUBTD_RET_W_STR-WBBTR sy-vline 
WA_DFKKDOUBTD_RET_W_STR-ECL_RATE sy-vline 
WA_DFKKDOUBTD_RET_W_STR-RTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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