ABAP Select data from SAP table RMPREF02_K into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP RMPREF02_K 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 RMPREF02_K. 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 RMPREF02_K 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_RMPREF02_K TYPE STANDARD TABLE OF RMPREF02_K,
      WA_RMPREF02_K TYPE RMPREF02_K,
      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: <RMPREF02_K> TYPE RMPREF02_K.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RMPREF02_K.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RMPREF02_K
  INTO TABLE IT_RMPREF02_K.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RMPREF02_K
*  INTO TABLE @DATA(IT_RMPREF02_K2).
*--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_RMPREF02_K INDEX 1 INTO DATA(WA_RMPREF02_K2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RMPREF02_K ASSIGNING <RMPREF02_K>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RMPREF02_K>-GZOLX = 1.
<RMPREF02_K>-IDNRK = 1.
<RMPREF02_K>-OJTXP = 1.
<RMPREF02_K>-XTLTY = 1.
<RMPREF02_K>-XTLNR = 1.

ENDLOOP.

LOOP AT IT_RMPREF02_K INTO WA_RMPREF02_K.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RMPREF02_K-XTLAN, sy-vline,
  WA_RMPREF02_K-XTLAL, sy-vline,
  WA_RMPREF02_K-FBSKZ, sy-vline,
  WA_RMPREF02_K-STAWN, sy-vline,
  WA_RMPREF02_K-PREFE, sy-vline,
  WA_RMPREF02_K-PRENE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RMPREF02_K 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_RMPREF02_K 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_RMPREF02_K INTO WA_RMPREF02_K.


*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 IDNRK
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RMPREF02_K-IDNRK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMPREF02_K-IDNRK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field XTLNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RMPREF02_K-XTLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMPREF02_K-XTLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field XTLAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RMPREF02_K-XTLAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMPREF02_K-XTLAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RMPREF02_K-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMPREF02_K-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_RMPREF02_K_STR, 
GZOLX TYPE STRING,
IDNRK TYPE STRING,
OJTXP TYPE STRING,
XTLTY TYPE STRING,
XTLNR TYPE STRING,
XTLAN TYPE STRING,
XTLAL TYPE STRING,
FBSKZ TYPE STRING,
STAWN TYPE STRING,
PREFE TYPE STRING,
PRENE TYPE STRING,
PRENG TYPE STRING,
MATWERT TYPE STRING,
MNGLG TYPE STRING,
MEINS TYPE STRING,
PREFKP TYPE STRING,
NUEKZ TYPE STRING,
VS_PROZEN TYPE STRING,
VS_MATWERT TYPE STRING,
STATUS TYPE STRING,
COLOR TYPE STRING,
BOX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RMPREF02_K_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_RMPREF02_K_STR-GZOLX sy-vline 
WA_RMPREF02_K_STR-IDNRK sy-vline 
WA_RMPREF02_K_STR-OJTXP sy-vline 
WA_RMPREF02_K_STR-XTLTY sy-vline 
WA_RMPREF02_K_STR-XTLNR sy-vline 
WA_RMPREF02_K_STR-XTLAN sy-vline 
WA_RMPREF02_K_STR-XTLAL sy-vline 
WA_RMPREF02_K_STR-FBSKZ sy-vline 
WA_RMPREF02_K_STR-STAWN sy-vline 
WA_RMPREF02_K_STR-PREFE sy-vline 
WA_RMPREF02_K_STR-PRENE sy-vline 
WA_RMPREF02_K_STR-PRENG sy-vline 
WA_RMPREF02_K_STR-MATWERT sy-vline 
WA_RMPREF02_K_STR-MNGLG sy-vline 
WA_RMPREF02_K_STR-MEINS sy-vline 
WA_RMPREF02_K_STR-PREFKP sy-vline 
WA_RMPREF02_K_STR-NUEKZ sy-vline 
WA_RMPREF02_K_STR-VS_PROZEN sy-vline 
WA_RMPREF02_K_STR-VS_MATWERT sy-vline 
WA_RMPREF02_K_STR-STATUS sy-vline 
WA_RMPREF02_K_STR-COLOR sy-vline 
WA_RMPREF02_K_STR-BOX sy-vline      INTO ld_text SEPARATED BY SPACE.

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