ABAP Select data from SAP table RF057F into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RF057F 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 RF057F. 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 RF057F 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_RF057F TYPE STANDARD TABLE OF RF057F,
      WA_RF057F TYPE RF057F,
      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: <RF057F> TYPE RF057F.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RF057F.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RF057F
  INTO TABLE IT_RF057F.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RF057F
*  INTO TABLE @DATA(IT_RF057F2).
*--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_RF057F INDEX 1 INTO DATA(WA_RF057F2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RF057F ASSIGNING <RF057F>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RF057F>-KUNNR = 1.
<RF057F>-LIFNR = 1.
<RF057F>-BUKRS = 1.
<RF057F>-BELNR = 1.
<RF057F>-GJAHR = 1.

ENDLOOP.

LOOP AT IT_RF057F INTO WA_RF057F.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RF057F-BUZEI, sy-vline,
  WA_RF057F-BLDAT, sy-vline,
  WA_RF057F-BUDAT, sy-vline,
  WA_RF057F-GSBER, sy-vline,
  WA_RF057F-DMBTR, sy-vline,
  WA_RF057F-DMBE2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RF057F 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_RF057F 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_RF057F INTO WA_RF057F.


*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 KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF057F-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF057F-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF057F-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF057F-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF057F-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF057F-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RF057F-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF057F-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_RF057F-DMBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF057F-DMBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBE2
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_RF057F-DMBE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF057F-DMBE2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field DMBE3
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_RF057F-DMBE3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF057F-DMBE3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_RF057F-WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF057F-WRBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field MWSTS
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_RF057F-MWSTS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF057F-MWSTS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WMWST
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_RF057F-WMWST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF057F-WMWST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUGBL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF057F-AUGBL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF057F-AUGBL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REBZG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF057F-REBZG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF057F-REBZG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field REBZJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RF057F-REBZJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF057F-REBZJ.
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_RF057F_STR, 
KUNNR TYPE STRING,
LIFNR TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
GSBER TYPE STRING,
DMBTR TYPE STRING,
DMBE2 TYPE STRING,
DMBE3 TYPE STRING,
WRBTR TYPE STRING,
WAERS TYPE STRING,
SHKZG TYPE STRING,
MWSTS TYPE STRING,
WMWST TYPE STRING,
ZTERM TYPE STRING,
ZFBDT TYPE STRING,
FAEDT TYPE STRING,
UMSKZ TYPE STRING,
BSCHL TYPE STRING,
XUMSW TYPE STRING,
AUGBL TYPE STRING,
AUGDT TYPE STRING,
REBZG TYPE STRING,
REBZJ TYPE STRING,
REBZZ TYPE STRING,
REBZT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RF057F_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_RF057F_STR-KUNNR sy-vline 
WA_RF057F_STR-LIFNR sy-vline 
WA_RF057F_STR-BUKRS sy-vline 
WA_RF057F_STR-BELNR sy-vline 
WA_RF057F_STR-GJAHR sy-vline 
WA_RF057F_STR-BUZEI sy-vline 
WA_RF057F_STR-BLDAT sy-vline 
WA_RF057F_STR-BUDAT sy-vline 
WA_RF057F_STR-GSBER sy-vline 
WA_RF057F_STR-DMBTR sy-vline 
WA_RF057F_STR-DMBE2 sy-vline 
WA_RF057F_STR-DMBE3 sy-vline 
WA_RF057F_STR-WRBTR sy-vline 
WA_RF057F_STR-WAERS sy-vline 
WA_RF057F_STR-SHKZG sy-vline 
WA_RF057F_STR-MWSTS sy-vline 
WA_RF057F_STR-WMWST sy-vline 
WA_RF057F_STR-ZTERM sy-vline 
WA_RF057F_STR-ZFBDT sy-vline 
WA_RF057F_STR-FAEDT sy-vline 
WA_RF057F_STR-UMSKZ sy-vline 
WA_RF057F_STR-BSCHL sy-vline 
WA_RF057F_STR-XUMSW sy-vline 
WA_RF057F_STR-AUGBL sy-vline 
WA_RF057F_STR-AUGDT sy-vline 
WA_RF057F_STR-REBZG sy-vline 
WA_RF057F_STR-REBZJ sy-vline 
WA_RF057F_STR-REBZZ sy-vline 
WA_RF057F_STR-REBZT sy-vline      INTO ld_text SEPARATED BY SPACE.

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