ABAP Select data from SAP table RM61P into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RM61P 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 RM61P. 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 RM61P 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_RM61P TYPE STANDARD TABLE OF RM61P,
      WA_RM61P TYPE RM61P,
      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: <RM61P> TYPE RM61P.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RM61P.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RM61P
  INTO TABLE IT_RM61P.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RM61P
*  INTO TABLE @DATA(IT_RM61P2).
*--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_RM61P INDEX 1 INTO DATA(WA_RM61P2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RM61P ASSIGNING <RM61P>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RM61P>-PLNUM = 1.
<RM61P>-PLREF = 1.
<RM61P>-PASCH = 1.
<RM61P>-BASCH = 1.
<RM61P>-OBART = 1.

ENDLOOP.

LOOP AT IT_RM61P INTO WA_RM61P.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RM61P-FCODE, sy-vline,
  WA_RM61P-MAKTX, sy-vline,
  WA_RM61P-MEINS, sy-vline,
  WA_RM61P-TLANZ, sy-vline,
  WA_RM61P-DISPO, sy-vline,
  WA_RM61P-PERTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RM61P 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_RM61P 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_RM61P INTO WA_RM61P.


*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 PLNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RM61P-PLNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM61P-PLNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLREF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RM61P-PLREF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM61P-PLREF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RM61P-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM61P-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RM61P-KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM61P-KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPEL
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RM61P-PSPEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM61P-PSPEL.
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_RM61P_STR, 
PLNUM TYPE STRING,
PLREF TYPE STRING,
PASCH TYPE STRING,
BASCH TYPE STRING,
OBART TYPE STRING,
FCODE TYPE STRING,
MAKTX TYPE STRING,
MEINS TYPE STRING,
TLANZ TYPE STRING,
DISPO TYPE STRING,
PERTR TYPE STRING,
SDATV TYPE STRING,
BESKZ TYPE STRING,
WERKS TYPE STRING,
LFDAT TYPE STRING,
FRGDT TYPE STRING,
BSART TYPE STRING,
LGORT TYPE STRING,
PSTYP TYPE STRING,
EKGRP TYPE STRING,
EPSTP TYPE STRING,
ESOBS TYPE STRING,
FIXKZ TYPE STRING,
KZUMS TYPE STRING,
KZZUO TYPE STRING,
NOAUS TYPE STRING,
KBEDM TYPE STRING,
RESWK TYPE STRING,
KNTTP TYPE STRING,
SOBKZ TYPE STRING,
KZVBR TYPE STRING,
KZBWS TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
PSPEL TYPE STRING,
SELKZ TYPE STRING,
PLSCN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RM61P_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_RM61P_STR-PLNUM sy-vline 
WA_RM61P_STR-PLREF sy-vline 
WA_RM61P_STR-PASCH sy-vline 
WA_RM61P_STR-BASCH sy-vline 
WA_RM61P_STR-OBART sy-vline 
WA_RM61P_STR-FCODE sy-vline 
WA_RM61P_STR-MAKTX sy-vline 
WA_RM61P_STR-MEINS sy-vline 
WA_RM61P_STR-TLANZ sy-vline 
WA_RM61P_STR-DISPO sy-vline 
WA_RM61P_STR-PERTR sy-vline 
WA_RM61P_STR-SDATV sy-vline 
WA_RM61P_STR-BESKZ sy-vline 
WA_RM61P_STR-WERKS sy-vline 
WA_RM61P_STR-LFDAT sy-vline 
WA_RM61P_STR-FRGDT sy-vline 
WA_RM61P_STR-BSART sy-vline 
WA_RM61P_STR-LGORT sy-vline 
WA_RM61P_STR-PSTYP sy-vline 
WA_RM61P_STR-EKGRP sy-vline 
WA_RM61P_STR-EPSTP sy-vline 
WA_RM61P_STR-ESOBS sy-vline 
WA_RM61P_STR-FIXKZ sy-vline 
WA_RM61P_STR-KZUMS sy-vline 
WA_RM61P_STR-KZZUO sy-vline 
WA_RM61P_STR-NOAUS sy-vline 
WA_RM61P_STR-KBEDM sy-vline 
WA_RM61P_STR-RESWK sy-vline 
WA_RM61P_STR-KNTTP sy-vline 
WA_RM61P_STR-SOBKZ sy-vline 
WA_RM61P_STR-KZVBR sy-vline 
WA_RM61P_STR-KZBWS sy-vline 
WA_RM61P_STR-KDAUF sy-vline 
WA_RM61P_STR-KDPOS sy-vline 
WA_RM61P_STR-PSPEL sy-vline 
WA_RM61P_STR-SELKZ sy-vline 
WA_RM61P_STR-PLSCN sy-vline      INTO ld_text SEPARATED BY SPACE.

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