ABAP Select data from SAP table RF02H into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RF02H 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 RF02H. 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 RF02H 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_RF02H TYPE STANDARD TABLE OF RF02H,
      WA_RF02H TYPE RF02H,
      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: <RF02H> TYPE RF02H.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RF02H.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RF02H
  INTO TABLE IT_RF02H.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RF02H
*  INTO TABLE @DATA(IT_RF02H2).
*--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_RF02H INDEX 1 INTO DATA(WA_RF02H2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RF02H ASSIGNING <RF02H>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RF02H>-ALTXT = 1.
<RF02H>-BUKRS = 1.
<RF02H>-ERDAT = 1.
<RF02H>-ERNAM = 1.
<RF02H>-FTEXT = 1.

ENDLOOP.

LOOP AT IT_RF02H INTO WA_RF02H.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RF02H-KKTXT, sy-vline,
  WA_RF02H-KTOPL, sy-vline,
  WA_RF02H-MANDT, sy-vline,
  WA_RF02H-MREGL, sy-vline,
  WA_RF02H-MUSTR, sy-vline,
  WA_RF02H-OBJCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RF02H 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_RF02H 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_RF02H INTO WA_RF02H.


*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 MUSTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF02H-MUSTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF02H-MUSTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REF_MUSTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF02H-REF_MUSTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF02H-REF_MUSTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REF_SAKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF02H-REF_SAKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF02H-REF_SAKNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SAKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RF02H-SAKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF02H-SAKNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RF02H-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RF02H-SPRAS.
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_RF02H_STR, 
ALTXT TYPE STRING,
BUKRS TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
FTEXT TYPE STRING,
KKTXT TYPE STRING,
KTOPL TYPE STRING,
MANDT TYPE STRING,
MREGL TYPE STRING,
MUSTR TYPE STRING,
OBJCT TYPE STRING,
REF_BUKRS TYPE STRING,
REF_KTOPL TYPE STRING,
REF_MUSTR TYPE STRING,
REF_SAKNR TYPE STRING,
SAKNR TYPE STRING,
SPRAS TYPE STRING,
STEXT TYPE STRING,
TXT50 TYPE STRING,
TXTID TYPE STRING,
XBACK TYPE STRING,
XCONT TYPE STRING,
XINIT TYPE STRING,
XNVOR TYPE STRING,
XSAVE TYPE STRING,
XVALU TYPE STRING,
XVORS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RF02H_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_RF02H_STR-ALTXT sy-vline 
WA_RF02H_STR-BUKRS sy-vline 
WA_RF02H_STR-ERDAT sy-vline 
WA_RF02H_STR-ERNAM sy-vline 
WA_RF02H_STR-FTEXT sy-vline 
WA_RF02H_STR-KKTXT sy-vline 
WA_RF02H_STR-KTOPL sy-vline 
WA_RF02H_STR-MANDT sy-vline 
WA_RF02H_STR-MREGL sy-vline 
WA_RF02H_STR-MUSTR sy-vline 
WA_RF02H_STR-OBJCT sy-vline 
WA_RF02H_STR-REF_BUKRS sy-vline 
WA_RF02H_STR-REF_KTOPL sy-vline 
WA_RF02H_STR-REF_MUSTR sy-vline 
WA_RF02H_STR-REF_SAKNR sy-vline 
WA_RF02H_STR-SAKNR sy-vline 
WA_RF02H_STR-SPRAS sy-vline 
WA_RF02H_STR-STEXT sy-vline 
WA_RF02H_STR-TXT50 sy-vline 
WA_RF02H_STR-TXTID sy-vline 
WA_RF02H_STR-XBACK sy-vline 
WA_RF02H_STR-XCONT sy-vline 
WA_RF02H_STR-XINIT sy-vline 
WA_RF02H_STR-XNVOR sy-vline 
WA_RF02H_STR-XSAVE sy-vline 
WA_RF02H_STR-XVALU sy-vline 
WA_RF02H_STR-XVORS sy-vline      INTO ld_text SEPARATED BY SPACE.

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