ABAP Select data from SAP table RN1MCI_DOC_MESSAGE_DYNPRO into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN1MCI_DOC_MESSAGE_DYNPRO 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 RN1MCI_DOC_MESSAGE_DYNPRO. 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 RN1MCI_DOC_MESSAGE_DYNPRO 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_RN1MCI_DOC_MESSAGE_DYNPRO TYPE STANDARD TABLE OF RN1MCI_DOC_MESSAGE_DYNPRO,
      WA_RN1MCI_DOC_MESSAGE_DYNPRO TYPE RN1MCI_DOC_MESSAGE_DYNPRO,
      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: <RN1MCI_DOC_MESSAGE_DYNPRO> TYPE RN1MCI_DOC_MESSAGE_DYNPRO.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN1MCI_DOC_MESSAGE_DYNPRO.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN1MCI_DOC_MESSAGE_DYNPRO
  INTO TABLE IT_RN1MCI_DOC_MESSAGE_DYNPRO.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN1MCI_DOC_MESSAGE_DYNPRO
*  INTO TABLE @DATA(IT_RN1MCI_DOC_MESSAGE_DYNPRO2).
*--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_RN1MCI_DOC_MESSAGE_DYNPRO INDEX 1 INTO DATA(WA_RN1MCI_DOC_MESSAGE_DYNPRO2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN1MCI_DOC_MESSAGE_DYNPRO ASSIGNING <RN1MCI_DOC_MESSAGE_DYNPRO>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN1MCI_DOC_MESSAGE_DYNPRO>-SYSID = 1.
<RN1MCI_DOC_MESSAGE_DYNPRO>-MANDT = 1.
<RN1MCI_DOC_MESSAGE_DYNPRO>-MTEXT = 1.
<RN1MCI_DOC_MESSAGE_DYNPRO>-DTID = 1.
<RN1MCI_DOC_MESSAGE_DYNPRO>-DTKB = 1.

ENDLOOP.

LOOP AT IT_RN1MCI_DOC_MESSAGE_DYNPRO INTO WA_RN1MCI_DOC_MESSAGE_DYNPRO.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN1MCI_DOC_MESSAGE_DYNPRO-DTVERS, sy-vline,
  WA_RN1MCI_DOC_MESSAGE_DYNPRO-EINRI, sy-vline,
  WA_RN1MCI_DOC_MESSAGE_DYNPRO-EINKB, sy-vline,
  WA_RN1MCI_DOC_MESSAGE_DYNPRO-PATNR, sy-vline,
  WA_RN1MCI_DOC_MESSAGE_DYNPRO-PNAME, sy-vline,
  WA_RN1MCI_DOC_MESSAGE_DYNPRO-FALNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN1MCI_DOC_MESSAGE_DYNPRO 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_RN1MCI_DOC_MESSAGE_DYNPRO 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_RN1MCI_DOC_MESSAGE_DYNPRO INTO WA_RN1MCI_DOC_MESSAGE_DYNPRO.


*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 ALPHA, internal->external for field EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1MCI_DOC_MESSAGE_DYNPRO-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1MCI_DOC_MESSAGE_DYNPRO-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PATNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1MCI_DOC_MESSAGE_DYNPRO-PATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1MCI_DOC_MESSAGE_DYNPRO-PATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1MCI_DOC_MESSAGE_DYNPRO-FALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1MCI_DOC_MESSAGE_DYNPRO-FALNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGDO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1MCI_DOC_MESSAGE_DYNPRO-ORGDO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1MCI_DOC_MESSAGE_DYNPRO-ORGDO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MITARB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1MCI_DOC_MESSAGE_DYNPRO-MITARB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1MCI_DOC_MESSAGE_DYNPRO-MITARB.
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_RN1MCI_DOC_MESSAGE_DYNPRO_STR, 
SYSID TYPE STRING,
MANDT TYPE STRING,
MTEXT TYPE STRING,
DTID TYPE STRING,
DTKB TYPE STRING,
DTVERS TYPE STRING,
EINRI TYPE STRING,
EINKB TYPE STRING,
PATNR TYPE STRING,
PNAME TYPE STRING,
FALNR TYPE STRING,
EXTERNAL_KEY TYPE STRING,
DODAT TYPE STRING,
DOTIM TYPE STRING,
ORGDO TYPE STRING,
ORGNA TYPE STRING,
MITARB TYPE STRING,
GPARTC TYPE STRING,
LOEKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN1MCI_DOC_MESSAGE_DYNPRO_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_RN1MCI_DOC_MESSAGE_DYNPRO_STR-SYSID sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-MANDT sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-MTEXT sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-DTID sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-DTKB sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-DTVERS sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-EINRI sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-EINKB sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-PATNR sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-PNAME sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-FALNR sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-EXTERNAL_KEY sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-DODAT sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-DOTIM sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-ORGDO sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-ORGNA sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-MITARB sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-GPARTC sy-vline 
WA_RN1MCI_DOC_MESSAGE_DYNPRO_STR-LOEKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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