ABAP Select data from SAP table RPCMACM0_OUTPUT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RPCMACM0_OUTPUT 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 RPCMACM0_OUTPUT. 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 RPCMACM0_OUTPUT 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_RPCMACM0_OUTPUT TYPE STANDARD TABLE OF RPCMACM0_OUTPUT,
      WA_RPCMACM0_OUTPUT TYPE RPCMACM0_OUTPUT,
      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: <RPCMACM0_OUTPUT> TYPE RPCMACM0_OUTPUT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RPCMACM0_OUTPUT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RPCMACM0_OUTPUT
  INTO TABLE IT_RPCMACM0_OUTPUT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RPCMACM0_OUTPUT
*  INTO TABLE @DATA(IT_RPCMACM0_OUTPUT2).
*--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_RPCMACM0_OUTPUT INDEX 1 INTO DATA(WA_RPCMACM0_OUTPUT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RPCMACM0_OUTPUT ASSIGNING <RPCMACM0_OUTPUT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RPCMACM0_OUTPUT>-PERNR = 1.
<RPCMACM0_OUTPUT>-PERNR_TXT = 1.
<RPCMACM0_OUTPUT>-PERID = 1.
<RPCMACM0_OUTPUT>-BUKRS = 1.
<RPCMACM0_OUTPUT>-BUKRS_TXT = 1.

ENDLOOP.

LOOP AT IT_RPCMACM0_OUTPUT INTO WA_RPCMACM0_OUTPUT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RPCMACM0_OUTPUT-WERKS, sy-vline,
  WA_RPCMACM0_OUTPUT-WERKS_TXT, sy-vline,
  WA_RPCMACM0_OUTPUT-BTRTL, sy-vline,
  WA_RPCMACM0_OUTPUT-BTRTL_TXT, sy-vline,
  WA_RPCMACM0_OUTPUT-PERSG, sy-vline,
  WA_RPCMACM0_OUTPUT-PERSG_TXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RPCMACM0_OUTPUT 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_RPCMACM0_OUTPUT 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_RPCMACM0_OUTPUT INTO WA_RPCMACM0_OUTPUT.


*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_RPCMACM0_OUTPUT-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RPCMACM0_OUTPUT-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_RPCMACM0_OUTPUT_STR, 
PERNR TYPE STRING,
PERNR_TXT TYPE STRING,
PERID 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,
ABKRS TYPE STRING,
ABKRS_TXT TYPE STRING,
GSBER TYPE STRING,
GSBER_TXT TYPE STRING,
FIRM TYPE STRING,
FIRM_TXT TYPE STRING,
SEKEY TYPE STRING,
SEKEY_TXT TYPE STRING,
SENUM TYPE STRING,
AGRP TYPE STRING,
AGRP_TXT TYPE STRING,
LGART TYPE STRING,
LGART_TXT TYPE STRING,
AWERT TYPE STRING,
WAERS TYPE STRING,
PAYDT TYPE STRING,
FPPER TYPE STRING,
FPBEG TYPE STRING,
FPEND TYPE STRING,
OCRSN TYPE STRING,
OCCAT TYPE STRING,
BONDT TYPE STRING,
PAYTY TYPE STRING,
PAYID TYPE STRING,
INPER TYPE STRING,
INPTY TYPE STRING,
INPID TYPE STRING,
IPEND TYPE STRING,
IABKRS TYPE STRING,
INOCR TYPE STRING,
INOCC TYPE STRING,
RUNDT TYPE STRING,
RUNTM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RPCMACM0_OUTPUT_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_RPCMACM0_OUTPUT_STR-PERNR sy-vline 
WA_RPCMACM0_OUTPUT_STR-PERNR_TXT sy-vline 
WA_RPCMACM0_OUTPUT_STR-PERID sy-vline 
WA_RPCMACM0_OUTPUT_STR-BUKRS sy-vline 
WA_RPCMACM0_OUTPUT_STR-BUKRS_TXT sy-vline 
WA_RPCMACM0_OUTPUT_STR-WERKS sy-vline 
WA_RPCMACM0_OUTPUT_STR-WERKS_TXT sy-vline 
WA_RPCMACM0_OUTPUT_STR-BTRTL sy-vline 
WA_RPCMACM0_OUTPUT_STR-BTRTL_TXT sy-vline 
WA_RPCMACM0_OUTPUT_STR-PERSG sy-vline 
WA_RPCMACM0_OUTPUT_STR-PERSG_TXT sy-vline 
WA_RPCMACM0_OUTPUT_STR-PERSK sy-vline 
WA_RPCMACM0_OUTPUT_STR-PERSK_TXT sy-vline 
WA_RPCMACM0_OUTPUT_STR-KOSTL sy-vline 
WA_RPCMACM0_OUTPUT_STR-KOSTL_TXT sy-vline 
WA_RPCMACM0_OUTPUT_STR-ABKRS sy-vline 
WA_RPCMACM0_OUTPUT_STR-ABKRS_TXT sy-vline 
WA_RPCMACM0_OUTPUT_STR-GSBER sy-vline 
WA_RPCMACM0_OUTPUT_STR-GSBER_TXT sy-vline 
WA_RPCMACM0_OUTPUT_STR-FIRM sy-vline 
WA_RPCMACM0_OUTPUT_STR-FIRM_TXT sy-vline 
WA_RPCMACM0_OUTPUT_STR-SEKEY sy-vline 
WA_RPCMACM0_OUTPUT_STR-SEKEY_TXT sy-vline 
WA_RPCMACM0_OUTPUT_STR-SENUM sy-vline 
WA_RPCMACM0_OUTPUT_STR-AGRP sy-vline 
WA_RPCMACM0_OUTPUT_STR-AGRP_TXT sy-vline 
WA_RPCMACM0_OUTPUT_STR-LGART sy-vline 
WA_RPCMACM0_OUTPUT_STR-LGART_TXT sy-vline 
WA_RPCMACM0_OUTPUT_STR-AWERT sy-vline 
WA_RPCMACM0_OUTPUT_STR-WAERS sy-vline 
WA_RPCMACM0_OUTPUT_STR-PAYDT sy-vline 
WA_RPCMACM0_OUTPUT_STR-FPPER sy-vline 
WA_RPCMACM0_OUTPUT_STR-FPBEG sy-vline 
WA_RPCMACM0_OUTPUT_STR-FPEND sy-vline 
WA_RPCMACM0_OUTPUT_STR-OCRSN sy-vline 
WA_RPCMACM0_OUTPUT_STR-OCCAT sy-vline 
WA_RPCMACM0_OUTPUT_STR-BONDT sy-vline 
WA_RPCMACM0_OUTPUT_STR-PAYTY sy-vline 
WA_RPCMACM0_OUTPUT_STR-PAYID sy-vline 
WA_RPCMACM0_OUTPUT_STR-INPER sy-vline 
WA_RPCMACM0_OUTPUT_STR-INPTY sy-vline 
WA_RPCMACM0_OUTPUT_STR-INPID sy-vline 
WA_RPCMACM0_OUTPUT_STR-IPEND sy-vline 
WA_RPCMACM0_OUTPUT_STR-IABKRS sy-vline 
WA_RPCMACM0_OUTPUT_STR-INOCR sy-vline 
WA_RPCMACM0_OUTPUT_STR-INOCC sy-vline 
WA_RPCMACM0_OUTPUT_STR-RUNDT sy-vline 
WA_RPCMACM0_OUTPUT_STR-RUNTM sy-vline      INTO ld_text SEPARATED BY SPACE.

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