ABAP Select data from SAP table RFKH0 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RFKH0 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 RFKH0. 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 RFKH0 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_RFKH0 TYPE STANDARD TABLE OF RFKH0,
      WA_RFKH0 TYPE RFKH0,
      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: <RFKH0> TYPE RFKH0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RFKH0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RFKH0
  INTO TABLE IT_RFKH0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFKH0
*  INTO TABLE @DATA(IT_RFKH02).
*--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_RFKH0 INDEX 1 INTO DATA(WA_RFKH02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RFKH0 ASSIGNING <RFKH0>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFKH0>-MANDT = 1.
<RFKH0>-APPLK = 1.
<RFKH0>-BLART = 1.
<RFKH0>-FIKEY = 1.
<RFKH0>-BLDAT = 1.

ENDLOOP.

LOOP AT IT_RFKH0 INTO WA_RFKH0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFKH0-BUDAT, sy-vline,
  WA_RFKH0-WAERS, sy-vline,
  WA_RFKH0-KURSF, sy-vline,
  WA_RFKH0-WWERT, sy-vline,
  WA_RFKH0-BUKRS, sy-vline,
  WA_RFKH0-GSBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFKH0 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_RFKH0 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_RFKH0 INTO WA_RFKH0.


*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 EXCRT, internal->external for field KURSF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_RFKH0-KURSF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKH0-KURSF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKH0-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKH0-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BVRKO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKH0-BVRKO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKH0-BVRKO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKH0-HKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKH0-HKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CDVKO_CS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKH0-CDVKO_CS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKH0-CDVKO_CS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CDVKO_CO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKH0-CDVKO_CO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKH0-CDVKO_CO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CDVKO_CH
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKH0-CDVKO_CH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKH0-CDVKO_CH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CDVKO_CP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKH0-CDVKO_CP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKH0-CDVKO_CP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CDVKO_PO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKH0-CDVKO_PO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKH0-CDVKO_PO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HKONA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKH0-HKONA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKH0-HKONA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HKONE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKH0-HKONE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKH0-HKONE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CDVKO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKH0-CDVKO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKH0-CDVKO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LZBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKH0-LZBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKH0-LZBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFKH0-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKH0-GPART.
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_RFKH0_STR, 
MANDT TYPE STRING,
APPLK TYPE STRING,
BLART TYPE STRING,
FIKEY TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
WAERS TYPE STRING,
KURSF TYPE STRING,
WWERT TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
PRCTR TYPE STRING,
VALUT TYPE STRING,
BVRKO TYPE STRING,
HKONT TYPE STRING,
AUGRD TYPE STRING,
CDVKO_CS TYPE STRING,
CDVKO_CO TYPE STRING,
CDVKO_CH TYPE STRING,
CDVKO_CP TYPE STRING,
CDVKO_PO TYPE STRING,
BETRW_CS TYPE STRING,
BETRW_CH TYPE STRING,
BETRW_CP TYPE STRING,
BETRW_PO TYPE STRING,
BETAK TYPE STRING,
BETAU TYPE STRING,
BETSP TYPE STRING,
NOLOT TYPE STRING,
BETRB TYPE STRING,
BETRC TYPE STRING,
BETRE TYPE STRING,
BETRG TYPE STRING,
BETRS TYPE STRING,
BETRW TYPE STRING,
BETRZ TYPE STRING,
BETRQ TYPE STRING,
BETRA TYPE STRING,
BETRL TYPE STRING,
AZEI1 TYPE STRING,
AZEI2 TYPE STRING,
SPART TYPE STRING,
XEIZA TYPE STRING,
XAUZA TYPE STRING,
CRDKZ TYPE STRING,
CSHKZ TYPE STRING,
CHQKZ TYPE STRING,
XAKON TYPE STRING,
POST TYPE STRING,
HERKF TYPE STRING,
INTVK TYPE STRING,
INTVL TYPE STRING,
HKONA TYPE STRING,
HKONE TYPE STRING,
NBCHK TYPE STRING,
NSCHK TYPE STRING,
RPRTA TYPE STRING,
RPRTC TYPE STRING,
RPRTN TYPE STRING,
NALLC TYPE STRING,
CSHIN TYPE STRING,
CSOUT TYPE STRING,
CRDIN TYPE STRING,
CDOUT TYPE STRING,
CHKIN TYPE STRING,
CHOUT TYPE STRING,
PSTIN TYPE STRING,
BSHIN TYPE STRING,
BSOUT TYPE STRING,
BRDIN TYPE STRING,
BHKIN TYPE STRING,
BHOUT TYPE STRING,
BSTIN TYPE STRING,
CHKPT TYPE STRING,
OPTXT TYPE STRING,
CHDSK TYPE STRING,
OFFIC TYPE STRING,
PAYTP TYPE STRING,
CDVKO TYPE STRING,
GPDAT TYPE STRING,
WAERX TYPE STRING,
BETRX TYPE STRING,
KUKON TYPE STRING,
TXTRZ TYPE STRING,
HZUON TYPE STRING,
XEIPH TYPE STRING,
SGTXT TYPE STRING,
ANZVA TYPE STRING,
LICON TYPE STRING,
XMARK TYPE STRING,
BARCD TYPE STRING,
MWSKZ TYPE STRING,
BRANCH TYPE STRING,
XRDPST TYPE STRING,
LZBEL TYPE STRING,
STODT TYPE STRING,
CJREV TYPE STRING,
AGTXT TYPE STRING,
KTOPL TYPE STRING,
BLART_CJ TYPE STRING,
XEXTC TYPE STRING,
BKVID TYPE STRING,
GPART TYPE STRING,
VACID TYPE STRING,
PYMET TYPE STRING,
PYVAR TYPE STRING,
RTPTP TYPE STRING,
AMTCC TYPE STRING,
HBKID TYPE STRING,
HBKID_CS TYPE STRING,
HBKID_CH TYPE STRING,
HBKID_PO TYPE STRING,
HKTID TYPE STRING,
HKTID_CS TYPE STRING,
HKTID_CH TYPE STRING,
HKTID_PO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFKH0_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_RFKH0_STR-MANDT sy-vline 
WA_RFKH0_STR-APPLK sy-vline 
WA_RFKH0_STR-BLART sy-vline 
WA_RFKH0_STR-FIKEY sy-vline 
WA_RFKH0_STR-BLDAT sy-vline 
WA_RFKH0_STR-BUDAT sy-vline 
WA_RFKH0_STR-WAERS sy-vline 
WA_RFKH0_STR-KURSF sy-vline 
WA_RFKH0_STR-WWERT sy-vline 
WA_RFKH0_STR-BUKRS sy-vline 
WA_RFKH0_STR-GSBER sy-vline 
WA_RFKH0_STR-PRCTR sy-vline 
WA_RFKH0_STR-VALUT sy-vline 
WA_RFKH0_STR-BVRKO sy-vline 
WA_RFKH0_STR-HKONT sy-vline 
WA_RFKH0_STR-AUGRD sy-vline 
WA_RFKH0_STR-CDVKO_CS sy-vline 
WA_RFKH0_STR-CDVKO_CO sy-vline 
WA_RFKH0_STR-CDVKO_CH sy-vline 
WA_RFKH0_STR-CDVKO_CP sy-vline 
WA_RFKH0_STR-CDVKO_PO sy-vline 
WA_RFKH0_STR-BETRW_CS sy-vline 
WA_RFKH0_STR-BETRW_CH sy-vline 
WA_RFKH0_STR-BETRW_CP sy-vline 
WA_RFKH0_STR-BETRW_PO sy-vline 
WA_RFKH0_STR-BETAK sy-vline 
WA_RFKH0_STR-BETAU sy-vline 
WA_RFKH0_STR-BETSP sy-vline 
WA_RFKH0_STR-NOLOT sy-vline 
WA_RFKH0_STR-BETRB sy-vline 
WA_RFKH0_STR-BETRC sy-vline 
WA_RFKH0_STR-BETRE sy-vline 
WA_RFKH0_STR-BETRG sy-vline 
WA_RFKH0_STR-BETRS sy-vline 
WA_RFKH0_STR-BETRW sy-vline 
WA_RFKH0_STR-BETRZ sy-vline 
WA_RFKH0_STR-BETRQ sy-vline 
WA_RFKH0_STR-BETRA sy-vline 
WA_RFKH0_STR-BETRL sy-vline 
WA_RFKH0_STR-AZEI1 sy-vline 
WA_RFKH0_STR-AZEI2 sy-vline 
WA_RFKH0_STR-SPART sy-vline 
WA_RFKH0_STR-XEIZA sy-vline 
WA_RFKH0_STR-XAUZA sy-vline 
WA_RFKH0_STR-CRDKZ sy-vline 
WA_RFKH0_STR-CSHKZ sy-vline 
WA_RFKH0_STR-CHQKZ sy-vline 
WA_RFKH0_STR-XAKON sy-vline 
WA_RFKH0_STR-POST sy-vline 
WA_RFKH0_STR-HERKF sy-vline 
WA_RFKH0_STR-INTVK sy-vline 
WA_RFKH0_STR-INTVL sy-vline 
WA_RFKH0_STR-HKONA sy-vline 
WA_RFKH0_STR-HKONE sy-vline 
WA_RFKH0_STR-NBCHK sy-vline 
WA_RFKH0_STR-NSCHK sy-vline 
WA_RFKH0_STR-RPRTA sy-vline 
WA_RFKH0_STR-RPRTC sy-vline 
WA_RFKH0_STR-RPRTN sy-vline 
WA_RFKH0_STR-NALLC sy-vline 
WA_RFKH0_STR-CSHIN sy-vline 
WA_RFKH0_STR-CSOUT sy-vline 
WA_RFKH0_STR-CRDIN sy-vline 
WA_RFKH0_STR-CDOUT sy-vline 
WA_RFKH0_STR-CHKIN sy-vline 
WA_RFKH0_STR-CHOUT sy-vline 
WA_RFKH0_STR-PSTIN sy-vline 
WA_RFKH0_STR-BSHIN sy-vline 
WA_RFKH0_STR-BSOUT sy-vline 
WA_RFKH0_STR-BRDIN sy-vline 
WA_RFKH0_STR-BHKIN sy-vline 
WA_RFKH0_STR-BHOUT sy-vline 
WA_RFKH0_STR-BSTIN sy-vline 
WA_RFKH0_STR-CHKPT sy-vline 
WA_RFKH0_STR-OPTXT sy-vline 
WA_RFKH0_STR-CHDSK sy-vline 
WA_RFKH0_STR-OFFIC sy-vline 
WA_RFKH0_STR-PAYTP sy-vline 
WA_RFKH0_STR-CDVKO sy-vline 
WA_RFKH0_STR-GPDAT sy-vline 
WA_RFKH0_STR-WAERX sy-vline 
WA_RFKH0_STR-BETRX sy-vline 
WA_RFKH0_STR-KUKON sy-vline 
WA_RFKH0_STR-TXTRZ sy-vline 
WA_RFKH0_STR-HZUON sy-vline 
WA_RFKH0_STR-XEIPH sy-vline 
WA_RFKH0_STR-SGTXT sy-vline 
WA_RFKH0_STR-ANZVA sy-vline 
WA_RFKH0_STR-LICON sy-vline 
WA_RFKH0_STR-XMARK sy-vline 
WA_RFKH0_STR-BARCD sy-vline 
WA_RFKH0_STR-MWSKZ sy-vline 
WA_RFKH0_STR-BRANCH sy-vline 
WA_RFKH0_STR-XRDPST sy-vline 
WA_RFKH0_STR-LZBEL sy-vline 
WA_RFKH0_STR-STODT sy-vline 
WA_RFKH0_STR-CJREV sy-vline 
WA_RFKH0_STR-AGTXT sy-vline 
WA_RFKH0_STR-KTOPL sy-vline 
WA_RFKH0_STR-BLART_CJ sy-vline 
WA_RFKH0_STR-XEXTC sy-vline 
WA_RFKH0_STR-BKVID sy-vline 
WA_RFKH0_STR-GPART sy-vline 
WA_RFKH0_STR-VACID sy-vline 
WA_RFKH0_STR-PYMET sy-vline 
WA_RFKH0_STR-PYVAR sy-vline 
WA_RFKH0_STR-RTPTP sy-vline 
WA_RFKH0_STR-AMTCC sy-vline 
WA_RFKH0_STR-HBKID sy-vline 
WA_RFKH0_STR-HBKID_CS sy-vline 
WA_RFKH0_STR-HBKID_CH sy-vline 
WA_RFKH0_STR-HBKID_PO sy-vline 
WA_RFKH0_STR-HKTID sy-vline 
WA_RFKH0_STR-HKTID_CS sy-vline 
WA_RFKH0_STR-HKTID_CH sy-vline 
WA_RFKH0_STR-HKTID_PO sy-vline      INTO ld_text SEPARATED BY SPACE.

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