ABAP Select data from SAP table RM03S into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RM03S 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 RM03S. 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 RM03S 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_RM03S TYPE STANDARD TABLE OF RM03S,
      WA_RM03S TYPE RM03S,
      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: <RM03S> TYPE RM03S.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RM03S.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RM03S
  INTO TABLE IT_RM03S.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RM03S
*  INTO TABLE @DATA(IT_RM03S2).
*--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_RM03S INDEX 1 INTO DATA(WA_RM03S2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RM03S ASSIGNING <RM03S>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RM03S>-MANDT = 1.
<RM03S>-MATNR = 1.
<RM03S>-WERKS = 1.
<RM03S>-LGORT = 1.
<RM03S>-CHARG = 1.

ENDLOOP.

LOOP AT IT_RM03S INTO WA_RM03S.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RM03S-LIFNR, sy-vline,
  WA_RM03S-KUNNR, sy-vline,
  WA_RM03S-VBELN, sy-vline,
  WA_RM03S-POSNR, sy-vline,
  WA_RM03S-ETENR, sy-vline,
  WA_RM03S-PLPLA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RM03S 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_RM03S 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_RM03S INTO WA_RM03S.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RM03S-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM03S-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RM03S-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM03S-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RM03S-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM03S-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RM03S-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM03S-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RM03S-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM03S-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field VMGJA
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_RM03S-VMGJA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM03S-VMGJA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field REF_MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RM03S-REF_MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM03S-REF_MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RM03S-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM03S-MEINS.
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_RM03S_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARG TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
ETENR TYPE STRING,
PLPLA TYPE STRING,
SOBKZ TYPE STRING,
SOKZ0 TYPE STRING,
SOKZ1 TYPE STRING,
SOKZ2 TYPE STRING,
SOKZ3 TYPE STRING,
SOKZ4 TYPE STRING,
SOKZ5 TYPE STRING,
SOKZ6 TYPE STRING,
SOKZ7 TYPE STRING,
SOKZ8 TYPE STRING,
SOKZ9 TYPE STRING,
SOTX0 TYPE STRING,
SOTX1 TYPE STRING,
SOTX2 TYPE STRING,
SOTX3 TYPE STRING,
SOTX4 TYPE STRING,
SOTX5 TYPE STRING,
SOTX6 TYPE STRING,
SOTX7 TYPE STRING,
SOTX8 TYPE STRING,
SOTX9 TYPE STRING,
SPRAS TYPE STRING,
FORMT TYPE STRING,
LTEXT TYPE STRING,
KZLTX TYPE STRING,
VMMON TYPE STRING,
VMGJA TYPE STRING,
LVORM TYPE STRING,
SANTW TYPE STRING,
GRUP1 TYPE STRING,
GRUP2 TYPE STRING,
GRUP3 TYPE STRING,
GRUP4 TYPE STRING,
REF_MATNR TYPE STRING,
REF_WERKS TYPE STRING,
REF_LGORT TYPE STRING,
REF_CHARG TYPE STRING,
MEINS TYPE STRING,
VZUST TYPE STRING,
FZUST TYPE STRING,
CHKLJ TYPE STRING,
CHKLN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RM03S_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_RM03S_STR-MANDT sy-vline 
WA_RM03S_STR-MATNR sy-vline 
WA_RM03S_STR-WERKS sy-vline 
WA_RM03S_STR-LGORT sy-vline 
WA_RM03S_STR-CHARG sy-vline 
WA_RM03S_STR-LIFNR sy-vline 
WA_RM03S_STR-KUNNR sy-vline 
WA_RM03S_STR-VBELN sy-vline 
WA_RM03S_STR-POSNR sy-vline 
WA_RM03S_STR-ETENR sy-vline 
WA_RM03S_STR-PLPLA sy-vline 
WA_RM03S_STR-SOBKZ sy-vline 
WA_RM03S_STR-SOKZ0 sy-vline 
WA_RM03S_STR-SOKZ1 sy-vline 
WA_RM03S_STR-SOKZ2 sy-vline 
WA_RM03S_STR-SOKZ3 sy-vline 
WA_RM03S_STR-SOKZ4 sy-vline 
WA_RM03S_STR-SOKZ5 sy-vline 
WA_RM03S_STR-SOKZ6 sy-vline 
WA_RM03S_STR-SOKZ7 sy-vline 
WA_RM03S_STR-SOKZ8 sy-vline 
WA_RM03S_STR-SOKZ9 sy-vline 
WA_RM03S_STR-SOTX0 sy-vline 
WA_RM03S_STR-SOTX1 sy-vline 
WA_RM03S_STR-SOTX2 sy-vline 
WA_RM03S_STR-SOTX3 sy-vline 
WA_RM03S_STR-SOTX4 sy-vline 
WA_RM03S_STR-SOTX5 sy-vline 
WA_RM03S_STR-SOTX6 sy-vline 
WA_RM03S_STR-SOTX7 sy-vline 
WA_RM03S_STR-SOTX8 sy-vline 
WA_RM03S_STR-SOTX9 sy-vline 
WA_RM03S_STR-SPRAS sy-vline 
WA_RM03S_STR-FORMT sy-vline 
WA_RM03S_STR-LTEXT sy-vline 
WA_RM03S_STR-KZLTX sy-vline 
WA_RM03S_STR-VMMON sy-vline 
WA_RM03S_STR-VMGJA sy-vline 
WA_RM03S_STR-LVORM sy-vline 
WA_RM03S_STR-SANTW sy-vline 
WA_RM03S_STR-GRUP1 sy-vline 
WA_RM03S_STR-GRUP2 sy-vline 
WA_RM03S_STR-GRUP3 sy-vline 
WA_RM03S_STR-GRUP4 sy-vline 
WA_RM03S_STR-REF_MATNR sy-vline 
WA_RM03S_STR-REF_WERKS sy-vline 
WA_RM03S_STR-REF_LGORT sy-vline 
WA_RM03S_STR-REF_CHARG sy-vline 
WA_RM03S_STR-MEINS sy-vline 
WA_RM03S_STR-VZUST sy-vline 
WA_RM03S_STR-FZUST sy-vline 
WA_RM03S_STR-CHKLJ sy-vline 
WA_RM03S_STR-CHKLN sy-vline      INTO ld_text SEPARATED BY SPACE.

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