ABAP Select data from SAP table RFKKBOL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFKKBOL
*  INTO TABLE @DATA(IT_RFKKBOL2).
*--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_RFKKBOL INDEX 1 INTO DATA(WA_RFKKBOL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFKKBOL>-MANDT = 1.
<RFKKBOL>-APPLK = 1.
<RFKKBOL>-MONAT = 1.
<RFKKBOL>-EYEAR = 1.
<RFKKBOL>-ANZPO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFKKBOL-BUKRS, sy-vline,
  WA_RFKKBOL-SPART, sy-vline,
  WA_RFKKBOL-WAERS, sy-vline,
  WA_RFKKBOL-BETRB, sy-vline,
  WA_RFKKBOL-BETRM, sy-vline,
  WA_RFKKBOL-BETRY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFKKBOL 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_RFKKBOL 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_RFKKBOL INTO WA_RFKKBOL.


*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_RFKKBOL-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKKBOL-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_RFKKBOL_STR, 
MANDT TYPE STRING,
APPLK TYPE STRING,
MONAT TYPE STRING,
EYEAR TYPE STRING,
ANZPO TYPE STRING,
BUKRS TYPE STRING,
SPART TYPE STRING,
WAERS TYPE STRING,
BETRB TYPE STRING,
BETRM TYPE STRING,
BETRY TYPE STRING,
OPBEL TYPE STRING,
ABDAT TYPE STRING,
BLART TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
GSBER TYPE STRING,
FIKEY TYPE STRING,
BUKRS_LOW TYPE STRING,
BUKRS_HIGH TYPE STRING,
ABDAT_LOW TYPE STRING,
ABDAT_HIGH TYPE STRING,
HERKF TYPE STRING,
TEXT1 TYPE STRING,
TEXT2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFKKBOL_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_RFKKBOL_STR-MANDT sy-vline 
WA_RFKKBOL_STR-APPLK sy-vline 
WA_RFKKBOL_STR-MONAT sy-vline 
WA_RFKKBOL_STR-EYEAR sy-vline 
WA_RFKKBOL_STR-ANZPO sy-vline 
WA_RFKKBOL_STR-BUKRS sy-vline 
WA_RFKKBOL_STR-SPART sy-vline 
WA_RFKKBOL_STR-WAERS sy-vline 
WA_RFKKBOL_STR-BETRB sy-vline 
WA_RFKKBOL_STR-BETRM sy-vline 
WA_RFKKBOL_STR-BETRY sy-vline 
WA_RFKKBOL_STR-OPBEL sy-vline 
WA_RFKKBOL_STR-ABDAT sy-vline 
WA_RFKKBOL_STR-BLART sy-vline 
WA_RFKKBOL_STR-BLDAT sy-vline 
WA_RFKKBOL_STR-BUDAT sy-vline 
WA_RFKKBOL_STR-GSBER sy-vline 
WA_RFKKBOL_STR-FIKEY sy-vline 
WA_RFKKBOL_STR-BUKRS_LOW sy-vline 
WA_RFKKBOL_STR-BUKRS_HIGH sy-vline 
WA_RFKKBOL_STR-ABDAT_LOW sy-vline 
WA_RFKKBOL_STR-ABDAT_HIGH sy-vline 
WA_RFKKBOL_STR-HERKF sy-vline 
WA_RFKKBOL_STR-TEXT1 sy-vline 
WA_RFKKBOL_STR-TEXT2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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