ABAP Select data from SAP table RM61D into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RM61D 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 RM61D. 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 RM61D 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_RM61D TYPE STANDARD TABLE OF RM61D,
      WA_RM61D TYPE RM61D,
      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: <RM61D> TYPE RM61D.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RM61D.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RM61D
  INTO TABLE IT_RM61D.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RM61D
*  INTO TABLE @DATA(IT_RM61D2).
*--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_RM61D INDEX 1 INTO DATA(WA_RM61D2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RM61D ASSIGNING <RM61D>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RM61D>-MANDT = 1.
<RM61D>-MATNR = 1.
<RM61D>-BERID = 1.
<RM61D>-PRDAT = 1.
<RM61D>-ERTAG = 1.

ENDLOOP.

LOOP AT IT_RM61D INTO WA_RM61D.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RM61D-PRWRT, sy-vline,
  WA_RM61D-KOPRW, sy-vline,
  WA_RM61D-FIXKZ, sy-vline,
  WA_RM61D-SAIIN, sy-vline,
  WA_RM61D-KFERE, sy-vline,
  WA_RM61D-PERKZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RM61D 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_RM61D 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_RM61D INTO WA_RM61D.


*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_RM61D-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RM61D-MATNR.
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_RM61D_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
BERID TYPE STRING,
PRDAT TYPE STRING,
ERTAG TYPE STRING,
PRWRT TYPE STRING,
KOPRW TYPE STRING,
FIXKZ TYPE STRING,
SAIIN TYPE STRING,
KFERE TYPE STRING,
PERKZ TYPE STRING,
PERIO TYPE STRING,
PRIOD TYPE STRING,
UPDTE TYPE STRING,
PRODT TYPE STRING,
LSEIT TYPE STRING,
MAXSE TYPE STRING,
PRDUR TYPE STRING,
KORFK TYPE STRING,
DISPO TYPE STRING,
FEHL1 TYPE STRING,
FEHL2 TYPE STRING,
FEHL3 TYPE STRING,
FEHL4 TYPE STRING,
FEHL5 TYPE STRING,
FEHL6 TYPE STRING,
FEHL7 TYPE STRING,
FEHL8 TYPE STRING,
KZPOG TYPE STRING,
KZONL TYPE STRING,
PROTO TYPE STRING,
KZAEN TYPE STRING,
VRBLG TYPE STRING,
SAIPE TYPE STRING,
FEHT1 TYPE STRING,
FEHT2 TYPE STRING,
FEHT3 TYPE STRING,
FEHT4 TYPE STRING,
FEHT5 TYPE STRING,
FEHT6 TYPE STRING,
FEHT7 TYPE STRING,
FEHT8 TYPE STRING,
PKZTX TYPE STRING,
PRDTX TYPE STRING,
UPDTX TYPE STRING,
PROTX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RM61D_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_RM61D_STR-MANDT sy-vline 
WA_RM61D_STR-MATNR sy-vline 
WA_RM61D_STR-BERID sy-vline 
WA_RM61D_STR-PRDAT sy-vline 
WA_RM61D_STR-ERTAG sy-vline 
WA_RM61D_STR-PRWRT sy-vline 
WA_RM61D_STR-KOPRW sy-vline 
WA_RM61D_STR-FIXKZ sy-vline 
WA_RM61D_STR-SAIIN sy-vline 
WA_RM61D_STR-KFERE sy-vline 
WA_RM61D_STR-PERKZ sy-vline 
WA_RM61D_STR-PERIO sy-vline 
WA_RM61D_STR-PRIOD sy-vline 
WA_RM61D_STR-UPDTE sy-vline 
WA_RM61D_STR-PRODT sy-vline 
WA_RM61D_STR-LSEIT sy-vline 
WA_RM61D_STR-MAXSE sy-vline 
WA_RM61D_STR-PRDUR sy-vline 
WA_RM61D_STR-KORFK sy-vline 
WA_RM61D_STR-DISPO sy-vline 
WA_RM61D_STR-FEHL1 sy-vline 
WA_RM61D_STR-FEHL2 sy-vline 
WA_RM61D_STR-FEHL3 sy-vline 
WA_RM61D_STR-FEHL4 sy-vline 
WA_RM61D_STR-FEHL5 sy-vline 
WA_RM61D_STR-FEHL6 sy-vline 
WA_RM61D_STR-FEHL7 sy-vline 
WA_RM61D_STR-FEHL8 sy-vline 
WA_RM61D_STR-KZPOG sy-vline 
WA_RM61D_STR-KZONL sy-vline 
WA_RM61D_STR-PROTO sy-vline 
WA_RM61D_STR-KZAEN sy-vline 
WA_RM61D_STR-VRBLG sy-vline 
WA_RM61D_STR-SAIPE sy-vline 
WA_RM61D_STR-FEHT1 sy-vline 
WA_RM61D_STR-FEHT2 sy-vline 
WA_RM61D_STR-FEHT3 sy-vline 
WA_RM61D_STR-FEHT4 sy-vline 
WA_RM61D_STR-FEHT5 sy-vline 
WA_RM61D_STR-FEHT6 sy-vline 
WA_RM61D_STR-FEHT7 sy-vline 
WA_RM61D_STR-FEHT8 sy-vline 
WA_RM61D_STR-PKZTX sy-vline 
WA_RM61D_STR-PRDTX sy-vline 
WA_RM61D_STR-UPDTX sy-vline 
WA_RM61D_STR-PROTX sy-vline      INTO ld_text SEPARATED BY SPACE.

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