ABAP Select data from SAP table DFKKBOL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKBOL
*  INTO TABLE @DATA(IT_DFKKBOL2).
*--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_DFKKBOL INDEX 1 INTO DATA(WA_DFKKBOL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKBOL>-MANDT = 1.
<DFKKBOL>-RFRNC = 1.
<DFKKBOL>-PRTYP = 1.
<DFKKBOL>-BUKRS = 1.
<DFKKBOL>-SPART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKBOL-DATUM, sy-vline,
  WA_DFKKBOL-WAERS, sy-vline,
  WA_DFKKBOL-BASWB, sy-vline,
  WA_DFKKBOL-BETWB, sy-vline,
  WA_DFKKBOL-BASBL, sy-vline,
  WA_DFKKBOL-BETBL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKBOL 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_DFKKBOL 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_DFKKBOL INTO WA_DFKKBOL.


*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 OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKBOL-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKBOL-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_DFKKBOL_STR, 
MANDT TYPE STRING,
RFRNC TYPE STRING,
PRTYP TYPE STRING,
BUKRS TYPE STRING,
SPART TYPE STRING,
DATUM TYPE STRING,
WAERS TYPE STRING,
BASWB TYPE STRING,
BETWB TYPE STRING,
BASBL TYPE STRING,
BETBL TYPE STRING,
BETRB TYPE STRING,
OPBEL TYPE STRING,
ABDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKBOL_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_DFKKBOL_STR-MANDT sy-vline 
WA_DFKKBOL_STR-RFRNC sy-vline 
WA_DFKKBOL_STR-PRTYP sy-vline 
WA_DFKKBOL_STR-BUKRS sy-vline 
WA_DFKKBOL_STR-SPART sy-vline 
WA_DFKKBOL_STR-DATUM sy-vline 
WA_DFKKBOL_STR-WAERS sy-vline 
WA_DFKKBOL_STR-BASWB sy-vline 
WA_DFKKBOL_STR-BETWB sy-vline 
WA_DFKKBOL_STR-BASBL sy-vline 
WA_DFKKBOL_STR-BETBL sy-vline 
WA_DFKKBOL_STR-BETRB sy-vline 
WA_DFKKBOL_STR-OPBEL sy-vline 
WA_DFKKBOL_STR-ABDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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