ABAP Select data from SAP table RMCLOBJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RMCLOBJ
*  INTO TABLE @DATA(IT_RMCLOBJ2).
*--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_RMCLOBJ INDEX 1 INTO DATA(WA_RMCLOBJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RMCLOBJ>-OBTAB = 1.
<RMCLOBJ>-OBTXT = 1.
<RMCLOBJ>-REDUN = 1.
<RMCLOBJ>-DRUCKTEXT = 1.
<RMCLOBJ>-OBJTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RMCLOBJ-DYNNR1, sy-vline,
  WA_RMCLOBJ-DYNNR2, sy-vline,
  WA_RMCLOBJ-DYNNR3, sy-vline,
  WA_RMCLOBJ-DYNNR4, sy-vline,
  WA_RMCLOBJ-TRACL, sy-vline,
  WA_RMCLOBJ-MFKLS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RMCLOBJ 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_RMCLOBJ 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_RMCLOBJ INTO WA_RMCLOBJ.


*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_RMCLOBJ_STR, 
OBTAB TYPE STRING,
OBTXT TYPE STRING,
REDUN TYPE STRING,
DRUCKTEXT TYPE STRING,
OBJTYPE TYPE STRING,
DYNNR1 TYPE STRING,
DYNNR2 TYPE STRING,
DYNNR3 TYPE STRING,
DYNNR4 TYPE STRING,
TRACL TYPE STRING,
MFKLS TYPE STRING,
AEBLGZUORD TYPE STRING,
AEDIEZUORD TYPE STRING,
MIGRATION TYPE STRING,
ZAEHL TYPE STRING,
SHOWOBJM TYPE STRING,
RADIO TYPE STRING,
SHOWO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RMCLOBJ_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_RMCLOBJ_STR-OBTAB sy-vline 
WA_RMCLOBJ_STR-OBTXT sy-vline 
WA_RMCLOBJ_STR-REDUN sy-vline 
WA_RMCLOBJ_STR-DRUCKTEXT sy-vline 
WA_RMCLOBJ_STR-OBJTYPE sy-vline 
WA_RMCLOBJ_STR-DYNNR1 sy-vline 
WA_RMCLOBJ_STR-DYNNR2 sy-vline 
WA_RMCLOBJ_STR-DYNNR3 sy-vline 
WA_RMCLOBJ_STR-DYNNR4 sy-vline 
WA_RMCLOBJ_STR-TRACL sy-vline 
WA_RMCLOBJ_STR-MFKLS sy-vline 
WA_RMCLOBJ_STR-AEBLGZUORD sy-vline 
WA_RMCLOBJ_STR-AEDIEZUORD sy-vline 
WA_RMCLOBJ_STR-MIGRATION sy-vline 
WA_RMCLOBJ_STR-ZAEHL sy-vline 
WA_RMCLOBJ_STR-SHOWOBJM sy-vline 
WA_RMCLOBJ_STR-RADIO sy-vline 
WA_RMCLOBJ_STR-SHOWO sy-vline      INTO ld_text SEPARATED BY SPACE.

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