ABAP Select data from SAP table DFKK_DISCO_PROPI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKK_DISCO_PROPI
*  INTO TABLE @DATA(IT_DFKK_DISCO_PROPI2).
*--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_DFKK_DISCO_PROPI INDEX 1 INTO DATA(WA_DFKK_DISCO_PROPI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKK_DISCO_PROPI>-MANDT = 1.
<DFKK_DISCO_PROPI>-DSCPNR = 1.
<DFKK_DISCO_PROPI>-OPBEL = 1.
<DFKK_DISCO_PROPI>-OPUPW = 1.
<DFKK_DISCO_PROPI>-OPUPK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKK_DISCO_PROPI-OPUPZ, sy-vline,
  WA_DFKK_DISCO_PROPI-MBETM, sy-vline,
  WA_DFKK_DISCO_PROPI-WAERS, sy-vline,
  WA_DFKK_DISCO_PROPI-MBETC, sy-vline,
  WA_DFKK_DISCO_PROPI-WERSC, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_DFKK_DISCO_PROPI 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_DFKK_DISCO_PROPI 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_DFKK_DISCO_PROPI INTO WA_DFKK_DISCO_PROPI.


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

*Conversion exit ALPHA, internal->external for field OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKK_DISCO_PROPI-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKK_DISCO_PROPI-OPBEL.
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_DFKK_DISCO_PROPI_STR, 
MANDT TYPE STRING,
DSCPNR TYPE STRING,
OPBEL TYPE STRING,
OPUPW TYPE STRING,
OPUPK TYPE STRING,
OPUPZ TYPE STRING,
MBETM TYPE STRING,
WAERS TYPE STRING,
MBETC TYPE STRING,
WERSC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKK_DISCO_PROPI_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_DFKK_DISCO_PROPI_STR-MANDT sy-vline 
WA_DFKK_DISCO_PROPI_STR-DSCPNR sy-vline 
WA_DFKK_DISCO_PROPI_STR-OPBEL sy-vline 
WA_DFKK_DISCO_PROPI_STR-OPUPW sy-vline 
WA_DFKK_DISCO_PROPI_STR-OPUPK sy-vline 
WA_DFKK_DISCO_PROPI_STR-OPUPZ sy-vline 
WA_DFKK_DISCO_PROPI_STR-MBETM sy-vline 
WA_DFKK_DISCO_PROPI_STR-WAERS sy-vline 
WA_DFKK_DISCO_PROPI_STR-MBETC sy-vline 
WA_DFKK_DISCO_PROPI_STR-WERSC sy-vline      INTO ld_text SEPARATED BY SPACE.

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