ABAP Select data from SAP table HRDK_RPCDIFM8 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP HRDK_RPCDIFM8 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 HRDK_RPCDIFM8. 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 HRDK_RPCDIFM8 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_HRDK_RPCDIFM8 TYPE STANDARD TABLE OF HRDK_RPCDIFM8,
      WA_HRDK_RPCDIFM8 TYPE HRDK_RPCDIFM8,
      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: <HRDK_RPCDIFM8> TYPE HRDK_RPCDIFM8.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_HRDK_RPCDIFM8.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM HRDK_RPCDIFM8
  INTO TABLE IT_HRDK_RPCDIFM8.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRDK_RPCDIFM8
*  INTO TABLE @DATA(IT_HRDK_RPCDIFM82).
*--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_HRDK_RPCDIFM8 INDEX 1 INTO DATA(WA_HRDK_RPCDIFM82).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_HRDK_RPCDIFM8 ASSIGNING <HRDK_RPCDIFM8>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRDK_RPCDIFM8>-PERNR = 1.
<HRDK_RPCDIFM8>-PERNR_TXT = 1.
<HRDK_RPCDIFM8>-CPRNR = 1.
<HRDK_RPCDIFM8>-BEGDA = 1.
<HRDK_RPCDIFM8>-ENDDA = 1.

ENDLOOP.

LOOP AT IT_HRDK_RPCDIFM8 INTO WA_HRDK_RPCDIFM8.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRDK_RPCDIFM8-BUKRS, sy-vline,
  WA_HRDK_RPCDIFM8-BUKRS_TXT, sy-vline,
  WA_HRDK_RPCDIFM8-WERKS, sy-vline,
  WA_HRDK_RPCDIFM8-WERKS_TXT, sy-vline,
  WA_HRDK_RPCDIFM8-BTRTL, sy-vline,
  WA_HRDK_RPCDIFM8-BTRTL_TXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRDK_RPCDIFM8 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_HRDK_RPCDIFM8 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_HRDK_RPCDIFM8 INTO WA_HRDK_RPCDIFM8.


*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 KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_HRDK_RPCDIFM8-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HRDK_RPCDIFM8-KOSTL.
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_HRDK_RPCDIFM8_STR, 
PERNR TYPE STRING,
PERNR_TXT TYPE STRING,
CPRNR TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
BUKRS TYPE STRING,
BUKRS_TXT TYPE STRING,
WERKS TYPE STRING,
WERKS_TXT TYPE STRING,
BTRTL TYPE STRING,
BTRTL_TXT TYPE STRING,
PERSG TYPE STRING,
PERSG_TXT TYPE STRING,
PERSK TYPE STRING,
PERSK_TXT TYPE STRING,
KOSTL TYPE STRING,
KOSTL_TXT TYPE STRING,
COMP_INSAP TYPE STRING,
COMP_INSAP_TXT TYPE STRING,
SENUM TYPE STRING,
SENUM_TXT TYPE STRING,
AGRPE TYPE STRING,
AGRPE_TXT TYPE STRING,
OFKOD TYPE STRING,
OFKOD_TXT TYPE STRING,
ABKRS TYPE STRING,
ABKRS_TXT TYPE STRING,
GSBER TYPE STRING,
GSBER_TXT TYPE STRING,
COUNTER TYPE STRING,
RLFRM TYPE STRING,
RLFRT TYPE STRING,
RLSEN TYPE STRING,
RLSET TYPE STRING,
OLDLG TYPE STRING,
OLDLT TYPE STRING,
NEWLG TYPE STRING,
NEWLT TYPE STRING,
OLDBT TYPE STRING,
NEWBT TYPE STRING,
DIFBT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRDK_RPCDIFM8_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_HRDK_RPCDIFM8_STR-PERNR sy-vline 
WA_HRDK_RPCDIFM8_STR-PERNR_TXT sy-vline 
WA_HRDK_RPCDIFM8_STR-CPRNR sy-vline 
WA_HRDK_RPCDIFM8_STR-BEGDA sy-vline 
WA_HRDK_RPCDIFM8_STR-ENDDA sy-vline 
WA_HRDK_RPCDIFM8_STR-BUKRS sy-vline 
WA_HRDK_RPCDIFM8_STR-BUKRS_TXT sy-vline 
WA_HRDK_RPCDIFM8_STR-WERKS sy-vline 
WA_HRDK_RPCDIFM8_STR-WERKS_TXT sy-vline 
WA_HRDK_RPCDIFM8_STR-BTRTL sy-vline 
WA_HRDK_RPCDIFM8_STR-BTRTL_TXT sy-vline 
WA_HRDK_RPCDIFM8_STR-PERSG sy-vline 
WA_HRDK_RPCDIFM8_STR-PERSG_TXT sy-vline 
WA_HRDK_RPCDIFM8_STR-PERSK sy-vline 
WA_HRDK_RPCDIFM8_STR-PERSK_TXT sy-vline 
WA_HRDK_RPCDIFM8_STR-KOSTL sy-vline 
WA_HRDK_RPCDIFM8_STR-KOSTL_TXT sy-vline 
WA_HRDK_RPCDIFM8_STR-COMP_INSAP sy-vline 
WA_HRDK_RPCDIFM8_STR-COMP_INSAP_TXT sy-vline 
WA_HRDK_RPCDIFM8_STR-SENUM sy-vline 
WA_HRDK_RPCDIFM8_STR-SENUM_TXT sy-vline 
WA_HRDK_RPCDIFM8_STR-AGRPE sy-vline 
WA_HRDK_RPCDIFM8_STR-AGRPE_TXT sy-vline 
WA_HRDK_RPCDIFM8_STR-OFKOD sy-vline 
WA_HRDK_RPCDIFM8_STR-OFKOD_TXT sy-vline 
WA_HRDK_RPCDIFM8_STR-ABKRS sy-vline 
WA_HRDK_RPCDIFM8_STR-ABKRS_TXT sy-vline 
WA_HRDK_RPCDIFM8_STR-GSBER sy-vline 
WA_HRDK_RPCDIFM8_STR-GSBER_TXT sy-vline 
WA_HRDK_RPCDIFM8_STR-COUNTER sy-vline 
WA_HRDK_RPCDIFM8_STR-RLFRM sy-vline 
WA_HRDK_RPCDIFM8_STR-RLFRT sy-vline 
WA_HRDK_RPCDIFM8_STR-RLSEN sy-vline 
WA_HRDK_RPCDIFM8_STR-RLSET sy-vline 
WA_HRDK_RPCDIFM8_STR-OLDLG sy-vline 
WA_HRDK_RPCDIFM8_STR-OLDLT sy-vline 
WA_HRDK_RPCDIFM8_STR-NEWLG sy-vline 
WA_HRDK_RPCDIFM8_STR-NEWLT sy-vline 
WA_HRDK_RPCDIFM8_STR-OLDBT sy-vline 
WA_HRDK_RPCDIFM8_STR-NEWBT sy-vline 
WA_HRDK_RPCDIFM8_STR-DIFBT sy-vline      INTO ld_text SEPARATED BY SPACE.

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