ABAP Select data from SAP table RMDPL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RMDPL
*  INTO TABLE @DATA(IT_RMDPL2).
*--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_RMDPL INDEX 1 INTO DATA(WA_RMDPL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RMDPL>-PSPKZ = 1.
<RMDPL>-PSPNR = 1.
<RMDPL>-PLPNR = 1.
<RMDPL>-PLPNR_REF = 1.
<RMDPL>-PROFL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RMDPL-POST1, sy-vline,
  WA_RMDPL-MATNR, sy-vline,
  WA_RMDPL-MAKTX, sy-vline,
  WA_RMDPL-PLPVL, sy-vline,
  WA_RMDPL-VLPSP, sy-vline,
  WA_RMDPL-VLPKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RMDPL 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_RMDPL 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_RMDPL INTO WA_RMDPL.


*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 ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RMDPL-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMDPL-PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PLPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_RMDPL-PLPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMDPL-PLPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field PLPNR_REF
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_RMDPL-PLPNR_REF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMDPL-PLPNR_REF.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ABPSN, internal->external for field PLPVL
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_RMDPL-PLPVL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMDPL-PLPVL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field VLPSP
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_RMDPL-VLPSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMDPL-VLPSP.
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_RMDPL_STR, 
PSPKZ TYPE STRING,
PSPNR TYPE STRING,
PLPNR TYPE STRING,
PLPNR_REF TYPE STRING,
PROFL TYPE STRING,
POST1 TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
PLPVL TYPE STRING,
VLPSP TYPE STRING,
VLPKZ TYPE STRING,
POST2 TYPE STRING,
SORT1 TYPE STRING,
SORT2 TYPE STRING,
SORT3 TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
FCODE TYPE STRING,
TRTYP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RMDPL_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_RMDPL_STR-PSPKZ sy-vline 
WA_RMDPL_STR-PSPNR sy-vline 
WA_RMDPL_STR-PLPNR sy-vline 
WA_RMDPL_STR-PLPNR_REF sy-vline 
WA_RMDPL_STR-PROFL sy-vline 
WA_RMDPL_STR-POST1 sy-vline 
WA_RMDPL_STR-MATNR sy-vline 
WA_RMDPL_STR-MAKTX sy-vline 
WA_RMDPL_STR-PLPVL sy-vline 
WA_RMDPL_STR-VLPSP sy-vline 
WA_RMDPL_STR-VLPKZ sy-vline 
WA_RMDPL_STR-POST2 sy-vline 
WA_RMDPL_STR-SORT1 sy-vline 
WA_RMDPL_STR-SORT2 sy-vline 
WA_RMDPL_STR-SORT3 sy-vline 
WA_RMDPL_STR-ERNAM sy-vline 
WA_RMDPL_STR-ERDAT sy-vline 
WA_RMDPL_STR-AENAM sy-vline 
WA_RMDPL_STR-AEDAT sy-vline 
WA_RMDPL_STR-FCODE sy-vline 
WA_RMDPL_STR-TRTYP sy-vline      INTO ld_text SEPARATED BY SPACE.

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