ABAP Select data from SAP table RFKHELP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFKHELP
*  INTO TABLE @DATA(IT_RFKHELP2).
*--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_RFKHELP INDEX 1 INTO DATA(WA_RFKHELP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFKHELP>-WAERS = 1.
<RFKHELP>-WRBTR = 1.
<RFKHELP>-QBSHB = 1.
<RFKHELP>-QSSHB = 1.
<RFKHELP>-NETTO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFKHELP-BRUTTO, sy-vline,
  WA_RFKHELP-QSFBT, sy-vline,
  WA_RFKHELP-DMBTR, sy-vline,
  WA_RFKHELP-PAYBTR, sy-vline,
  WA_RFKHELP-SDMBTR, sy-vline,
  WA_RFKHELP-NDMBTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFKHELP 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_RFKHELP 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_RFKHELP INTO WA_RFKHELP.


*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 AC132, internal->external for field WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKHELP-WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKHELP-WRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field QBSHB
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKHELP-QBSHB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKHELP-QBSHB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field QSSHB
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKHELP-QSSHB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKHELP-QSSHB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field NETTO
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKHELP-NETTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKHELP-NETTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field BRUTTO
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKHELP-BRUTTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKHELP-BRUTTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field QSFBT
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKHELP-QSFBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKHELP-QSFBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field DMBTR
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKHELP-DMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKHELP-DMBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field PAYBTR
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKHELP-PAYBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKHELP-PAYBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field SDMBTR
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKHELP-SDMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKHELP-SDMBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field NDMBTR
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKHELP-NDMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKHELP-NDMBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field VDMBTR
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKHELP-VDMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKHELP-VDMBTR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit AC132, internal->external for field RDMBTR
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKHELP-RDMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKHELP-RDMBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field RWRBTR
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKHELP-RWRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKHELP-RWRBTR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit AC132, internal->external for field TOTALALL
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKHELP-TOTALALL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKHELP-TOTALALL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field TOTAL
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_RFKHELP-TOTAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKHELP-TOTAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field REPYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RFKHELP-REPYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKHELP-REPYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ODNIT, internal->external for field XBLNR_ALT
CALL FUNCTION 'CONVERSION_EXIT_ODNIT_OUTPUT'
  EXPORTING
    input =                      WA_RFKHELP-XBLNR_ALT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFKHELP-XBLNR_ALT.
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_RFKHELP_STR, 
WAERS TYPE STRING,
WRBTR TYPE STRING,
QBSHB TYPE STRING,
QSSHB TYPE STRING,
NETTO TYPE STRING,
BRUTTO TYPE STRING,
QSFBT TYPE STRING,
DMBTR TYPE STRING,
PAYBTR TYPE STRING,
SDMBTR TYPE STRING,
NDMBTR TYPE STRING,
VDMBTR TYPE STRING,
VONDT TYPE STRING,
BISDT TYPE STRING,
FAEL1 TYPE STRING,
FAEL2 TYPE STRING,
FAEL3 TYPE STRING,
SEXWD TYPE STRING,
BUDAT TYPE STRING,
AUGDT TYPE STRING,
BLDAT TYPE STRING,
XBLNR TYPE STRING,
BLART TYPE STRING,
BELNR TYPE STRING,
QSSKZ TYPE STRING,
QSCOD TYPE STRING,
RBLDAT TYPE STRING,
RDMBTR TYPE STRING,
RWRBTR TYPE STRING,
RBELNR TYPE STRING,
PERSON TYPE STRING,
BUSAB TYPE STRING,
SEQNO TYPE STRING,
TOTALALL TYPE STRING,
TOTAL TYPE STRING,
REPYEAR TYPE STRING,
FORM281 TYPE STRING,
FORM325 TYPE STRING,
ITEMS_PAGE TYPE STRING,
XBLNR_ALT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFKHELP_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_RFKHELP_STR-WAERS sy-vline 
WA_RFKHELP_STR-WRBTR sy-vline 
WA_RFKHELP_STR-QBSHB sy-vline 
WA_RFKHELP_STR-QSSHB sy-vline 
WA_RFKHELP_STR-NETTO sy-vline 
WA_RFKHELP_STR-BRUTTO sy-vline 
WA_RFKHELP_STR-QSFBT sy-vline 
WA_RFKHELP_STR-DMBTR sy-vline 
WA_RFKHELP_STR-PAYBTR sy-vline 
WA_RFKHELP_STR-SDMBTR sy-vline 
WA_RFKHELP_STR-NDMBTR sy-vline 
WA_RFKHELP_STR-VDMBTR sy-vline 
WA_RFKHELP_STR-VONDT sy-vline 
WA_RFKHELP_STR-BISDT sy-vline 
WA_RFKHELP_STR-FAEL1 sy-vline 
WA_RFKHELP_STR-FAEL2 sy-vline 
WA_RFKHELP_STR-FAEL3 sy-vline 
WA_RFKHELP_STR-SEXWD sy-vline 
WA_RFKHELP_STR-BUDAT sy-vline 
WA_RFKHELP_STR-AUGDT sy-vline 
WA_RFKHELP_STR-BLDAT sy-vline 
WA_RFKHELP_STR-XBLNR sy-vline 
WA_RFKHELP_STR-BLART sy-vline 
WA_RFKHELP_STR-BELNR sy-vline 
WA_RFKHELP_STR-QSSKZ sy-vline 
WA_RFKHELP_STR-QSCOD sy-vline 
WA_RFKHELP_STR-RBLDAT sy-vline 
WA_RFKHELP_STR-RDMBTR sy-vline 
WA_RFKHELP_STR-RWRBTR sy-vline 
WA_RFKHELP_STR-RBELNR sy-vline 
WA_RFKHELP_STR-PERSON sy-vline 
WA_RFKHELP_STR-BUSAB sy-vline 
WA_RFKHELP_STR-SEQNO sy-vline 
WA_RFKHELP_STR-TOTALALL sy-vline 
WA_RFKHELP_STR-TOTAL sy-vline 
WA_RFKHELP_STR-REPYEAR sy-vline 
WA_RFKHELP_STR-FORM281 sy-vline 
WA_RFKHELP_STR-FORM325 sy-vline 
WA_RFKHELP_STR-ITEMS_PAGE sy-vline 
WA_RFKHELP_STR-XBLNR_ALT sy-vline      INTO ld_text SEPARATED BY SPACE.

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