ABAP Select data from SAP table MSR_RFC_RO_HEAD_COMV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MSR_RFC_RO_HEAD_COMV
*  INTO TABLE @DATA(IT_MSR_RFC_RO_HEAD_COMV2).
*--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_MSR_RFC_RO_HEAD_COMV INDEX 1 INTO DATA(WA_MSR_RFC_RO_HEAD_COMV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MSR_RFC_RO_HEAD_COMV>-DOC_TYPE = 1.
<MSR_RFC_RO_HEAD_COMV>-SALESORG = 1.
<MSR_RFC_RO_HEAD_COMV>-DISTR_CHAN = 1.
<MSR_RFC_RO_HEAD_COMV>-DIVISION = 1.
<MSR_RFC_RO_HEAD_COMV>-SALES_OFF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MSR_RFC_RO_HEAD_COMV-SALES_GRP, sy-vline,
  WA_MSR_RFC_RO_HEAD_COMV-DOC_NUMBER, sy-vline,
  WA_MSR_RFC_RO_HEAD_COMV-SOLD_TO, sy-vline,
  WA_MSR_RFC_RO_HEAD_COMV-SHIP_TO, sy-vline,
  WA_MSR_RFC_RO_HEAD_COMV-PURCH_NO_C, sy-vline,
  WA_MSR_RFC_RO_HEAD_COMV-PURCH_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MSR_RFC_RO_HEAD_COMV 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_MSR_RFC_RO_HEAD_COMV 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_MSR_RFC_RO_HEAD_COMV INTO WA_MSR_RFC_RO_HEAD_COMV.


*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 AUART, internal->external for field DOC_TYPE
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_MSR_RFC_RO_HEAD_COMV-DOC_TYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSR_RFC_RO_HEAD_COMV-DOC_TYPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOC_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MSR_RFC_RO_HEAD_COMV-DOC_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSR_RFC_RO_HEAD_COMV-DOC_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SOLD_TO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MSR_RFC_RO_HEAD_COMV-SOLD_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSR_RFC_RO_HEAD_COMV-SOLD_TO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field SHIP_TO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MSR_RFC_RO_HEAD_COMV-SHIP_TO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSR_RFC_RO_HEAD_COMV-SHIP_TO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field EXCHG_RATE
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_MSR_RFC_RO_HEAD_COMV-EXCHG_RATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSR_RFC_RO_HEAD_COMV-EXCHG_RATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field CPD_LANGU_INT
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_MSR_RFC_RO_HEAD_COMV-CPD_LANGU_INT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSR_RFC_RO_HEAD_COMV-CPD_LANGU_INT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PROMOTION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MSR_RFC_RO_HEAD_COMV-PROMOTION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSR_RFC_RO_HEAD_COMV-PROMOTION.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field WBS_ELEM
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_MSR_RFC_RO_HEAD_COMV-WBS_ELEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSR_RFC_RO_HEAD_COMV-WBS_ELEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field COSTCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MSR_RFC_RO_HEAD_COMV-COSTCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MSR_RFC_RO_HEAD_COMV-COSTCENTER.
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_MSR_RFC_RO_HEAD_COMV_STR, 
DOC_TYPE TYPE STRING,
SALESORG TYPE STRING,
DISTR_CHAN TYPE STRING,
DIVISION TYPE STRING,
SALES_OFF TYPE STRING,
SALES_GRP TYPE STRING,
DOC_NUMBER TYPE STRING,
SOLD_TO TYPE STRING,
SHIP_TO TYPE STRING,
PURCH_NO_C TYPE STRING,
PURCH_DATE TYPE STRING,
REQ_DATE_DOC TYPE STRING,
DATE_TYPE TYPE STRING,
DELIV_PLANT TYPE STRING,
ORD_REASON TYPE STRING,
DLV_BLOCK TYPE STRING,
BILL_BLOCK TYPE STRING,
PRICE_DATE TYPE STRING,
CURRENCY TYPE STRING,
EXCHG_RATE TYPE STRING,
EXCHG_RATE_EXT TYPE STRING,
INCOTERMS1 TYPE STRING,
INCOTERMS2 TYPE STRING,
BILL_DATE TYPE STRING,
PMNTTRMS TYPE STRING,
DOC_DATE TYPE STRING,
SHIP_COND TYPE STRING,
PAYMENT_METHOD TYPE STRING,
DLV_TIME TYPE STRING,
PRICE_LIST TYPE STRING,
PRICE_GRP TYPE STRING,
SALES_DIST TYPE STRING,
CUST_GROUP TYPE STRING,
PO_METHOD TYPE STRING,
SHIP_TYPE TYPE STRING,
UNLOAD_PT TYPE STRING,
REC_POINT TYPE STRING,
CPD_NAME TYPE STRING,
CPD_STREET TYPE STRING,
CPD_HNUM TYPE STRING,
CPD_PCODE TYPE STRING,
CPD_CITY TYPE STRING,
CPD_COUNTRY TYPE STRING,
CPD_LANGU_INT TYPE STRING,
CPD_LANGU_EXT TYPE STRING,
CPD_HNUM_LONG TYPE STRING,
CUST_GRP1 TYPE STRING,
CUST_GRP2 TYPE STRING,
CUST_GRP3 TYPE STRING,
CUST_GRP4 TYPE STRING,
CUST_GRP5 TYPE STRING,
CUST_COND_GRP1 TYPE STRING,
CUST_COND_GRP2 TYPE STRING,
CUST_COND_GRP3 TYPE STRING,
CUST_COND_GRP4 TYPE STRING,
CUST_COND_GRP5 TYPE STRING,
FIX_VAL_DY TYPE STRING,
ADD_VAL_DY TYPE STRING,
ALT_TAX_CLASS TYPE STRING,
PROMOTION TYPE STRING,
BUS_AREA TYPE STRING,
WBS_ELEM TYPE STRING,
COSTCENTER TYPE STRING,
REF_DOC_L TYPE STRING,
SEPA_MANDATE_ID TYPE STRING,
SEPA_PAY_TYPE TYPE STRING,
SD_SEPA_RELE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MSR_RFC_RO_HEAD_COMV_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_MSR_RFC_RO_HEAD_COMV_STR-DOC_TYPE sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-SALESORG sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-DISTR_CHAN sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-DIVISION sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-SALES_OFF sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-SALES_GRP sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-DOC_NUMBER sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-SOLD_TO sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-SHIP_TO sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-PURCH_NO_C sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-PURCH_DATE sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-REQ_DATE_DOC sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-DATE_TYPE sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-DELIV_PLANT sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-ORD_REASON sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-DLV_BLOCK sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-BILL_BLOCK sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-PRICE_DATE sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CURRENCY sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-EXCHG_RATE sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-EXCHG_RATE_EXT sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-INCOTERMS1 sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-INCOTERMS2 sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-BILL_DATE sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-PMNTTRMS sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-DOC_DATE sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-SHIP_COND sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-PAYMENT_METHOD sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-DLV_TIME sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-PRICE_LIST sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-PRICE_GRP sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-SALES_DIST sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CUST_GROUP sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-PO_METHOD sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-SHIP_TYPE sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-UNLOAD_PT sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-REC_POINT sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CPD_NAME sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CPD_STREET sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CPD_HNUM sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CPD_PCODE sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CPD_CITY sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CPD_COUNTRY sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CPD_LANGU_INT sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CPD_LANGU_EXT sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CPD_HNUM_LONG sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CUST_GRP1 sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CUST_GRP2 sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CUST_GRP3 sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CUST_GRP4 sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CUST_GRP5 sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CUST_COND_GRP1 sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CUST_COND_GRP2 sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CUST_COND_GRP3 sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CUST_COND_GRP4 sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-CUST_COND_GRP5 sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-FIX_VAL_DY sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-ADD_VAL_DY sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-ALT_TAX_CLASS sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-PROMOTION sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-BUS_AREA sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-WBS_ELEM sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-COSTCENTER sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-REF_DOC_L sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-SEPA_MANDATE_ID sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-SEPA_PAY_TYPE sy-vline 
WA_MSR_RFC_RO_HEAD_COMV_STR-SD_SEPA_RELE sy-vline      INTO ld_text SEPARATED BY SPACE.

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