ABAP Select data from SAP table RMCP6 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RMCP6 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 RMCP6. 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 RMCP6 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_RMCP6 TYPE STANDARD TABLE OF RMCP6,
      WA_RMCP6 TYPE RMCP6,
      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: <RMCP6> TYPE RMCP6.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RMCP6.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RMCP6
  INTO TABLE IT_RMCP6.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RMCP6
*  INTO TABLE @DATA(IT_RMCP62).
*--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_RMCP6 INDEX 1 INTO DATA(WA_RMCP62).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RMCP6 ASSIGNING <RMCP6>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RMCP6>-MANDT = 1.
<RMCP6>-SPRAS = 1.
<RMCP6>-SCTYP = 1.
<RMCP6>-SCTXT = 1.
<RMCP6>-GSTRU = 1.

ENDLOOP.

LOOP AT IT_RMCP6 INTO WA_RMCP6.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RMCP6-MCINF, sy-vline,
  WA_RMCP6-ISTXT, sy-vline,
  WA_RMCP6-FLGZA, sy-vline,
  WA_RMCP6-FLGMA, sy-vline,
  WA_RMCP6-FLGSP, sy-vline,
  WA_RMCP6-FLGMP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RMCP6 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_RMCP6 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_RMCP6 INTO WA_RMCP6.


*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 ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RMCP6-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMCP6-SPRAS.
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_RMCP6_STR, 
MANDT TYPE STRING,
SPRAS TYPE STRING,
SCTYP TYPE STRING,
SCTXT TYPE STRING,
GSTRU TYPE STRING,
MCINF TYPE STRING,
ISTXT TYPE STRING,
FLGZA TYPE STRING,
FLGMA TYPE STRING,
FLGSP TYPE STRING,
FLGMP TYPE STRING,
FLGKP TYPE STRING,
HIPER TYPE STRING,
FUPER TYPE STRING,
PLBEG TYPE STRING,
REPER TYPE STRING,
HINPU TYPE STRING,
LINET TYPE STRING,
LINE_IN TYPE STRING,
LINE_OUT TYPE STRING,
LINE_DUM TYPE STRING,
LINE_HLP TYPE STRING,
LINE_STD TYPE STRING,
LINE_TXT TYPE STRING,
LINE_PLO TYPE STRING,
LINE_STRU TYPE STRING,
LINE_FORM TYPE STRING,
LINE_TEXT TYPE STRING,
TABHK TYPE STRING,
FELDH TYPE STRING,
LINKZ TYPE STRING,
LINTX TYPE STRING,
STDTX TYPE STRING,
FLGFC TYPE STRING,
FLGVI TYPE STRING,
FLGDS TYPE STRING,
FLGDZ TYPE STRING,
RETYP TYPE STRING,
RELEN TYPE STRING,
REP_KENNZ TYPE STRING,
REP_PLOBJ TYPE STRING,
REP_NIX TYPE STRING,
LDESC TYPE STRING,
INFUN TYPE STRING,
OUFUN TYPE STRING,
MAKRO TYPE STRING,
DMAKRO TYPE STRING,
EMAKRO TYPE STRING,
SMAKRO TYPE STRING,
MTEXT TYPE STRING,
MARCA TYPE STRING,
DISPL TYPE STRING,
CALFD TYPE STRING,
Z1 TYPE STRING,
Z2 TYPE STRING,
Z3 TYPE STRING,
OPER1 TYPE STRING,
OPER2 TYPE STRING,
OPER3 TYPE STRING,
OP TYPE STRING,
OPTYP TYPE STRING,
O1 TYPE STRING,
SUTYP TYPE STRING,
SUMAK TYPE STRING,
ARKZ1 TYPE STRING,
ARKZ2 TYPE STRING,
ARKZ3 TYPE STRING,
EHBA1 TYPE STRING,
EHBA2 TYPE STRING,
EHBA3 TYPE STRING,
RELE1 TYPE STRING,
RELE2 TYPE STRING,
RELE3 TYPE STRING,
DISKZ TYPE STRING,
MARKZ TYPE STRING,
HBLI TYPE STRING,
HBLI1 TYPE STRING,
HBLI2 TYPE STRING,
HBLI3 TYPE STRING,
SCRDD TYPE STRING,
SCRKD TYPE STRING,
SCRRD TYPE STRING,
CDAT TYPE STRING,
CTIME TYPE STRING,
AUTOR TYPE STRING,
UDAT TYPE STRING,
UTIME TYPE STRING,
UPNAM TYPE STRING,
LAGERB_1 TYPE STRING,
LAGERB_2 TYPE STRING,
LAGERB_3 TYPE STRING,
LAGERB_4 TYPE STRING,
LAGERB_5 TYPE STRING,
RWEI TYPE STRING,
RWPR TYPE STRING,
LSUM TYPE STRING,
UWAE TYPE STRING,
FLGAE TYPE STRING,
FLGRA TYPE STRING,
UME TYPE STRING,
HPRAST TYPE STRING,
FPRAST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RMCP6_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_RMCP6_STR-MANDT sy-vline 
WA_RMCP6_STR-SPRAS sy-vline 
WA_RMCP6_STR-SCTYP sy-vline 
WA_RMCP6_STR-SCTXT sy-vline 
WA_RMCP6_STR-GSTRU sy-vline 
WA_RMCP6_STR-MCINF sy-vline 
WA_RMCP6_STR-ISTXT sy-vline 
WA_RMCP6_STR-FLGZA sy-vline 
WA_RMCP6_STR-FLGMA sy-vline 
WA_RMCP6_STR-FLGSP sy-vline 
WA_RMCP6_STR-FLGMP sy-vline 
WA_RMCP6_STR-FLGKP sy-vline 
WA_RMCP6_STR-HIPER sy-vline 
WA_RMCP6_STR-FUPER sy-vline 
WA_RMCP6_STR-PLBEG sy-vline 
WA_RMCP6_STR-REPER sy-vline 
WA_RMCP6_STR-HINPU sy-vline 
WA_RMCP6_STR-LINET sy-vline 
WA_RMCP6_STR-LINE_IN sy-vline 
WA_RMCP6_STR-LINE_OUT sy-vline 
WA_RMCP6_STR-LINE_DUM sy-vline 
WA_RMCP6_STR-LINE_HLP sy-vline 
WA_RMCP6_STR-LINE_STD sy-vline 
WA_RMCP6_STR-LINE_TXT sy-vline 
WA_RMCP6_STR-LINE_PLO sy-vline 
WA_RMCP6_STR-LINE_STRU sy-vline 
WA_RMCP6_STR-LINE_FORM sy-vline 
WA_RMCP6_STR-LINE_TEXT sy-vline 
WA_RMCP6_STR-TABHK sy-vline 
WA_RMCP6_STR-FELDH sy-vline 
WA_RMCP6_STR-LINKZ sy-vline 
WA_RMCP6_STR-LINTX sy-vline 
WA_RMCP6_STR-STDTX sy-vline 
WA_RMCP6_STR-FLGFC sy-vline 
WA_RMCP6_STR-FLGVI sy-vline 
WA_RMCP6_STR-FLGDS sy-vline 
WA_RMCP6_STR-FLGDZ sy-vline 
WA_RMCP6_STR-RETYP sy-vline 
WA_RMCP6_STR-RELEN sy-vline 
WA_RMCP6_STR-REP_KENNZ sy-vline 
WA_RMCP6_STR-REP_PLOBJ sy-vline 
WA_RMCP6_STR-REP_NIX sy-vline 
WA_RMCP6_STR-LDESC sy-vline 
WA_RMCP6_STR-INFUN sy-vline 
WA_RMCP6_STR-OUFUN sy-vline 
WA_RMCP6_STR-MAKRO sy-vline 
WA_RMCP6_STR-DMAKRO sy-vline 
WA_RMCP6_STR-EMAKRO sy-vline 
WA_RMCP6_STR-SMAKRO sy-vline 
WA_RMCP6_STR-MTEXT sy-vline 
WA_RMCP6_STR-MARCA sy-vline 
WA_RMCP6_STR-DISPL sy-vline 
WA_RMCP6_STR-CALFD sy-vline 
WA_RMCP6_STR-Z1 sy-vline 
WA_RMCP6_STR-Z2 sy-vline 
WA_RMCP6_STR-Z3 sy-vline 
WA_RMCP6_STR-OPER1 sy-vline 
WA_RMCP6_STR-OPER2 sy-vline 
WA_RMCP6_STR-OPER3 sy-vline 
WA_RMCP6_STR-OP sy-vline 
WA_RMCP6_STR-OPTYP sy-vline 
WA_RMCP6_STR-O1 sy-vline 
WA_RMCP6_STR-SUTYP sy-vline 
WA_RMCP6_STR-SUMAK sy-vline 
WA_RMCP6_STR-ARKZ1 sy-vline 
WA_RMCP6_STR-ARKZ2 sy-vline 
WA_RMCP6_STR-ARKZ3 sy-vline 
WA_RMCP6_STR-EHBA1 sy-vline 
WA_RMCP6_STR-EHBA2 sy-vline 
WA_RMCP6_STR-EHBA3 sy-vline 
WA_RMCP6_STR-RELE1 sy-vline 
WA_RMCP6_STR-RELE2 sy-vline 
WA_RMCP6_STR-RELE3 sy-vline 
WA_RMCP6_STR-DISKZ sy-vline 
WA_RMCP6_STR-MARKZ sy-vline 
WA_RMCP6_STR-HBLI sy-vline 
WA_RMCP6_STR-HBLI1 sy-vline 
WA_RMCP6_STR-HBLI2 sy-vline 
WA_RMCP6_STR-HBLI3 sy-vline 
WA_RMCP6_STR-SCRDD sy-vline 
WA_RMCP6_STR-SCRKD sy-vline 
WA_RMCP6_STR-SCRRD sy-vline 
WA_RMCP6_STR-CDAT sy-vline 
WA_RMCP6_STR-CTIME sy-vline 
WA_RMCP6_STR-AUTOR sy-vline 
WA_RMCP6_STR-UDAT sy-vline 
WA_RMCP6_STR-UTIME sy-vline 
WA_RMCP6_STR-UPNAM sy-vline 
WA_RMCP6_STR-LAGERB_1 sy-vline 
WA_RMCP6_STR-LAGERB_2 sy-vline 
WA_RMCP6_STR-LAGERB_3 sy-vline 
WA_RMCP6_STR-LAGERB_4 sy-vline 
WA_RMCP6_STR-LAGERB_5 sy-vline 
WA_RMCP6_STR-RWEI sy-vline 
WA_RMCP6_STR-RWPR sy-vline 
WA_RMCP6_STR-LSUM sy-vline 
WA_RMCP6_STR-UWAE sy-vline 
WA_RMCP6_STR-FLGAE sy-vline 
WA_RMCP6_STR-FLGRA sy-vline 
WA_RMCP6_STR-UME sy-vline 
WA_RMCP6_STR-HPRAST sy-vline 
WA_RMCP6_STR-FPRAST sy-vline      INTO ld_text SEPARATED BY SPACE.

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