ABAP Select data from SAP table RMCSSC2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RMCSSC2 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 RMCSSC2. 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 RMCSSC2 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_RMCSSC2 TYPE STANDARD TABLE OF RMCSSC2,
      WA_RMCSSC2 TYPE RMCSSC2,
      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: <RMCSSC2> TYPE RMCSSC2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RMCSSC2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RMCSSC2
  INTO TABLE IT_RMCSSC2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RMCSSC2
*  INTO TABLE @DATA(IT_RMCSSC22).
*--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_RMCSSC2 INDEX 1 INTO DATA(WA_RMCSSC22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RMCSSC2 ASSIGNING <RMCSSC2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RMCSSC2>-VLIMGVP = 1.
<RMCSSC2>-VBUDMNG = 1.
<RMCSSC2>-RLIMGVP = 1.
<RMCSSC2>-RLIMMNG = 1.
<RMCSSC2>-HWAER = 1.

ENDLOOP.

LOOP AT IT_RMCSSC2 INTO WA_RMCSSC2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RMCSSC2-BASME, sy-vline,
  WA_RMCSSC2-BSTPROZ, sy-vline,
  WA_RMCSSC2-UBGVP, sy-vline,
  WA_RMCSSC2-UBMNG, sy-vline,
  WA_RMCSSC2-UBPROZ, sy-vline,
  WA_RMCSSC2-BKIVP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RMCSSC2 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_RMCSSC2 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_RMCSSC2 INTO WA_RMCSSC2.


*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 CUNIT, internal->external for field BASME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RMCSSC2-BASME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMCSSC2-BASME.
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_RMCSSC2_STR, 
VLIMGVP TYPE STRING,
VBUDMNG TYPE STRING,
RLIMGVP TYPE STRING,
RLIMMNG TYPE STRING,
HWAER TYPE STRING,
BASME TYPE STRING,
BSTPROZ TYPE STRING,
UBGVP TYPE STRING,
UBMNG TYPE STRING,
UBPROZ TYPE STRING,
BKIVP TYPE STRING,
BKIPROZ TYPE STRING,
BKIMNG TYPE STRING,
SBUDGVP TYPE STRING,
SBUDMNG TYPE STRING,
VQUOTEPROZ TYPE STRING,
AVGVP TYPE STRING,
WEGVP TYPE STRING,
WEMNG TYPE STRING,
BVLGVP TYPE STRING,
BVLMNG TYPE STRING,
WEABGVP TYPE STRING,
WEABMNG TYPE STRING,
BVLABGVP TYPE STRING,
BVLABMNG TYPE STRING,
OBVLGVP TYPE STRING,
OBVLMNG TYPE STRING,
SOTBGVP TYPE STRING,
SOTBMNG TYPE STRING,
VOTBGVP TYPE STRING,
VOTBMNG TYPE STRING,
OTBGVP TYPE STRING,
OTBMNG TYPE STRING,
UBVLGVP TYPE STRING,
UBVLMNG TYPE STRING,
ULBVLGVP TYPE STRING,
ULBVLMNG TYPE STRING,
UWEGVP TYPE STRING,
UWEMNG TYPE STRING,
UWAGVP TYPE STRING,
UWAMNG TYPE STRING,
UDBWEGVP TYPE STRING,
UDBWEMNG TYPE STRING,
UDBWAGVP TYPE STRING,
UDBWAMNG TYPE STRING,
NBVLGVP TYPE STRING,
NBVLMNG TYPE STRING,
NWESGVP TYPE STRING,
NWESMNG TYPE STRING,
NDBWGVP TYPE STRING,
NDBWMNG TYPE STRING,
UBBSMNG TYPE STRING,
UBBSGVP TYPE STRING,
ULBBSMNG TYPE STRING,
ULBBSGVP TYPE STRING,
UBGVO TYPE STRING,
UBGEO TYPE STRING,
BKIVO TYPE STRING,
BKIEO TYPE STRING,
GLIMGVO TYPE STRING,
GLIMGEO TYPE STRING,
VBUDGVO TYPE STRING,
VBUDGEO TYPE STRING,
RBUDGVO TYPE STRING,
RBUDGEO TYPE STRING,
ULBBSGVO TYPE STRING,
ULBBSGEO TYPE STRING,
UBBSGVO TYPE STRING,
UBBSGEO TYPE STRING,
SOTBGVO TYPE STRING,
SOTBGEO TYPE STRING,
VOTBGVO TYPE STRING,
VOTBGEO TYPE STRING,
AVGVO TYPE STRING,
AVGEO TYPE STRING,
SCEXT TYPE STRING,
OTBSCTYP2 TYPE STRING,
OTBVRSIO2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RMCSSC2_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_RMCSSC2_STR-VLIMGVP sy-vline 
WA_RMCSSC2_STR-VBUDMNG sy-vline 
WA_RMCSSC2_STR-RLIMGVP sy-vline 
WA_RMCSSC2_STR-RLIMMNG sy-vline 
WA_RMCSSC2_STR-HWAER sy-vline 
WA_RMCSSC2_STR-BASME sy-vline 
WA_RMCSSC2_STR-BSTPROZ sy-vline 
WA_RMCSSC2_STR-UBGVP sy-vline 
WA_RMCSSC2_STR-UBMNG sy-vline 
WA_RMCSSC2_STR-UBPROZ sy-vline 
WA_RMCSSC2_STR-BKIVP sy-vline 
WA_RMCSSC2_STR-BKIPROZ sy-vline 
WA_RMCSSC2_STR-BKIMNG sy-vline 
WA_RMCSSC2_STR-SBUDGVP sy-vline 
WA_RMCSSC2_STR-SBUDMNG sy-vline 
WA_RMCSSC2_STR-VQUOTEPROZ sy-vline 
WA_RMCSSC2_STR-AVGVP sy-vline 
WA_RMCSSC2_STR-WEGVP sy-vline 
WA_RMCSSC2_STR-WEMNG sy-vline 
WA_RMCSSC2_STR-BVLGVP sy-vline 
WA_RMCSSC2_STR-BVLMNG sy-vline 
WA_RMCSSC2_STR-WEABGVP sy-vline 
WA_RMCSSC2_STR-WEABMNG sy-vline 
WA_RMCSSC2_STR-BVLABGVP sy-vline 
WA_RMCSSC2_STR-BVLABMNG sy-vline 
WA_RMCSSC2_STR-OBVLGVP sy-vline 
WA_RMCSSC2_STR-OBVLMNG sy-vline 
WA_RMCSSC2_STR-SOTBGVP sy-vline 
WA_RMCSSC2_STR-SOTBMNG sy-vline 
WA_RMCSSC2_STR-VOTBGVP sy-vline 
WA_RMCSSC2_STR-VOTBMNG sy-vline 
WA_RMCSSC2_STR-OTBGVP sy-vline 
WA_RMCSSC2_STR-OTBMNG sy-vline 
WA_RMCSSC2_STR-UBVLGVP sy-vline 
WA_RMCSSC2_STR-UBVLMNG sy-vline 
WA_RMCSSC2_STR-ULBVLGVP sy-vline 
WA_RMCSSC2_STR-ULBVLMNG sy-vline 
WA_RMCSSC2_STR-UWEGVP sy-vline 
WA_RMCSSC2_STR-UWEMNG sy-vline 
WA_RMCSSC2_STR-UWAGVP sy-vline 
WA_RMCSSC2_STR-UWAMNG sy-vline 
WA_RMCSSC2_STR-UDBWEGVP sy-vline 
WA_RMCSSC2_STR-UDBWEMNG sy-vline 
WA_RMCSSC2_STR-UDBWAGVP sy-vline 
WA_RMCSSC2_STR-UDBWAMNG sy-vline 
WA_RMCSSC2_STR-NBVLGVP sy-vline 
WA_RMCSSC2_STR-NBVLMNG sy-vline 
WA_RMCSSC2_STR-NWESGVP sy-vline 
WA_RMCSSC2_STR-NWESMNG sy-vline 
WA_RMCSSC2_STR-NDBWGVP sy-vline 
WA_RMCSSC2_STR-NDBWMNG sy-vline 
WA_RMCSSC2_STR-UBBSMNG sy-vline 
WA_RMCSSC2_STR-UBBSGVP sy-vline 
WA_RMCSSC2_STR-ULBBSMNG sy-vline 
WA_RMCSSC2_STR-ULBBSGVP sy-vline 
WA_RMCSSC2_STR-UBGVO sy-vline 
WA_RMCSSC2_STR-UBGEO sy-vline 
WA_RMCSSC2_STR-BKIVO sy-vline 
WA_RMCSSC2_STR-BKIEO sy-vline 
WA_RMCSSC2_STR-GLIMGVO sy-vline 
WA_RMCSSC2_STR-GLIMGEO sy-vline 
WA_RMCSSC2_STR-VBUDGVO sy-vline 
WA_RMCSSC2_STR-VBUDGEO sy-vline 
WA_RMCSSC2_STR-RBUDGVO sy-vline 
WA_RMCSSC2_STR-RBUDGEO sy-vline 
WA_RMCSSC2_STR-ULBBSGVO sy-vline 
WA_RMCSSC2_STR-ULBBSGEO sy-vline 
WA_RMCSSC2_STR-UBBSGVO sy-vline 
WA_RMCSSC2_STR-UBBSGEO sy-vline 
WA_RMCSSC2_STR-SOTBGVO sy-vline 
WA_RMCSSC2_STR-SOTBGEO sy-vline 
WA_RMCSSC2_STR-VOTBGVO sy-vline 
WA_RMCSSC2_STR-VOTBGEO sy-vline 
WA_RMCSSC2_STR-AVGVO sy-vline 
WA_RMCSSC2_STR-AVGEO sy-vline 
WA_RMCSSC2_STR-SCEXT sy-vline 
WA_RMCSSC2_STR-OTBSCTYP2 sy-vline 
WA_RMCSSC2_STR-OTBVRSIO2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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