ABAP Select data from SAP table CNVMBTRFCDEST_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNVMBTRFCDEST_S
*  INTO TABLE @DATA(IT_CNVMBTRFCDEST_S2).
*--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_CNVMBTRFCDEST_S INDEX 1 INTO DATA(WA_CNVMBTRFCDEST_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNVMBTRFCDEST_S>-RCV_SYSTEM_NAME = 1.
<CNVMBTRFCDEST_S>-DIST_SYSTEM_NAME = 1.
<CNVMBTRFCDEST_S>-RFCDEST = 1.
<CNVMBTRFCDEST_S>-RFCTYPE = 1.
<CNVMBTRFCDEST_S>-RFCTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNVMBTRFCDEST_S-RFCLBFLAG, sy-vline,
  WA_CNVMBTRFCDEST_S-RFCSYSID, sy-vline,
  WA_CNVMBTRFCDEST_S-RFCSERVICE, sy-vline,
  WA_CNVMBTRFCDEST_S-RFCHOST, sy-vline,
  WA_CNVMBTRFCDEST_S-RFCLOAD, sy-vline,
  WA_CNVMBTRFCDEST_S-RFCTRACE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNVMBTRFCDEST_S 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_CNVMBTRFCDEST_S 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_CNVMBTRFCDEST_S INTO WA_CNVMBTRFCDEST_S.


*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 RFCLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_CNVMBTRFCDEST_S-RFCLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNVMBTRFCDEST_S-RFCLANG.
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_CNVMBTRFCDEST_S_STR, 
RCV_SYSTEM_NAME TYPE STRING,
DIST_SYSTEM_NAME TYPE STRING,
RFCDEST TYPE STRING,
RFCTYPE TYPE STRING,
RFCTYPE TYPE STRING,
RFCLBFLAG TYPE STRING,
RFCSYSID TYPE STRING,
RFCSERVICE TYPE STRING,
RFCHOST TYPE STRING,
RFCLOAD TYPE STRING,
RFCTRACE TYPE STRING,
RFCSLOGIN TYPE STRING,
RFCLOGON TYPE STRING,
RFCSNC TYPE STRING,
RFCLANG TYPE STRING,
RFCCLIENT TYPE STRING,
RFCUSER TYPE STRING,
RFCDOC1 TYPE STRING,
RFCGWHOST TYPE STRING,
RFCGWSERV TYPE STRING,
BTCSUPPR TYPE STRING,
BTCTRIES TYPE STRING,
BTCDELAY TYPE STRING,
RFCLOCK TYPE STRING,
ARFCACTIVE TYPE STRING,
ARFCMETHOD TYPE STRING,
ARFCCYCLE TYPE STRING,
RFCCONVERT TYPE STRING,
RFCCONVX TYPE STRING,
RFCUNICODE TYPE STRING,
RFCBITMAP TYPE STRING,
RFCWAN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNVMBTRFCDEST_S_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_CNVMBTRFCDEST_S_STR-RCV_SYSTEM_NAME sy-vline 
WA_CNVMBTRFCDEST_S_STR-DIST_SYSTEM_NAME sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCDEST sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCTYPE sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCTYPE sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCLBFLAG sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCSYSID sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCSERVICE sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCHOST sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCLOAD sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCTRACE sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCSLOGIN sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCLOGON sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCSNC sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCLANG sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCCLIENT sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCUSER sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCDOC1 sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCGWHOST sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCGWSERV sy-vline 
WA_CNVMBTRFCDEST_S_STR-BTCSUPPR sy-vline 
WA_CNVMBTRFCDEST_S_STR-BTCTRIES sy-vline 
WA_CNVMBTRFCDEST_S_STR-BTCDELAY sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCLOCK sy-vline 
WA_CNVMBTRFCDEST_S_STR-ARFCACTIVE sy-vline 
WA_CNVMBTRFCDEST_S_STR-ARFCMETHOD sy-vline 
WA_CNVMBTRFCDEST_S_STR-ARFCCYCLE sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCCONVERT sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCCONVX sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCUNICODE sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCBITMAP sy-vline 
WA_CNVMBTRFCDEST_S_STR-RFCWAN sy-vline      INTO ld_text SEPARATED BY SPACE.

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