ABAP Select data from SAP table RM61L into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RM61L 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 RM61L. 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 RM61L 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_RM61L TYPE STANDARD TABLE OF RM61L,
      WA_RM61L TYPE RM61L,
      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: <RM61L> TYPE RM61L.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RM61L.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RM61L
  INTO TABLE IT_RM61L.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RM61L
*  INTO TABLE @DATA(IT_RM61L2).
*--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_RM61L INDEX 1 INTO DATA(WA_RM61L2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RM61L ASSIGNING <RM61L>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RM61L>-PLSCN = 1.
<RM61L>-DDTXT1 = 1.
<RM61L>-DDTXT2 = 1.
<RM61L>-VSTXT = 1.
<RM61L>-DYN_SLCT = 1.

ENDLOOP.

LOOP AT IT_RM61L INTO WA_RM61L.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RM61L-VTEKS, sy-vline,
  WA_RM61L-VTBCO, sy-vline,
  WA_RM61L-LFPP1, sy-vline,
  WA_RM61L-LFPP2, sy-vline,
  WA_RM61L-LFPP3, sy-vline,
  WA_RM61L-LFPP4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RM61L 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_RM61L 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_RM61L INTO WA_RM61L.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RM61L_STR, 
PLSCN TYPE STRING,
DDTXT1 TYPE STRING,
DDTXT2 TYPE STRING,
VSTXT TYPE STRING,
DYN_SLCT TYPE STRING,
VTEKS TYPE STRING,
VTBCO TYPE STRING,
LFPP1 TYPE STRING,
LFPP2 TYPE STRING,
LFPP3 TYPE STRING,
LFPP4 TYPE STRING,
LFPPP TYPE STRING,
DFWT1 TYPE STRING,
DFWT2 TYPE STRING,
DFWT3 TYPE STRING,
DFWT4 TYPE STRING,
PLSCV TYPE STRING,
DMDVL TYPE STRING,
DPLAF TYPE STRING,
DMDKP TYPE STRING,
DS012 TYPE STRING,
DMDFD TYPE STRING,
DSTCK TYPE STRING,
DS094 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RM61L_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_RM61L_STR-PLSCN sy-vline 
WA_RM61L_STR-DDTXT1 sy-vline 
WA_RM61L_STR-DDTXT2 sy-vline 
WA_RM61L_STR-VSTXT sy-vline 
WA_RM61L_STR-DYN_SLCT sy-vline 
WA_RM61L_STR-VTEKS sy-vline 
WA_RM61L_STR-VTBCO sy-vline 
WA_RM61L_STR-LFPP1 sy-vline 
WA_RM61L_STR-LFPP2 sy-vline 
WA_RM61L_STR-LFPP3 sy-vline 
WA_RM61L_STR-LFPP4 sy-vline 
WA_RM61L_STR-LFPPP sy-vline 
WA_RM61L_STR-DFWT1 sy-vline 
WA_RM61L_STR-DFWT2 sy-vline 
WA_RM61L_STR-DFWT3 sy-vline 
WA_RM61L_STR-DFWT4 sy-vline 
WA_RM61L_STR-PLSCV sy-vline 
WA_RM61L_STR-DMDVL sy-vline 
WA_RM61L_STR-DPLAF sy-vline 
WA_RM61L_STR-DMDKP sy-vline 
WA_RM61L_STR-DS012 sy-vline 
WA_RM61L_STR-DMDFD sy-vline 
WA_RM61L_STR-DSTCK sy-vline 
WA_RM61L_STR-DS094 sy-vline      INTO ld_text SEPARATED BY SPACE.

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