ABAP Select data from SAP table RN2ET_DIALOG into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN2ET_DIALOG 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 RN2ET_DIALOG. 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 RN2ET_DIALOG 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_RN2ET_DIALOG TYPE STANDARD TABLE OF RN2ET_DIALOG,
      WA_RN2ET_DIALOG TYPE RN2ET_DIALOG,
      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: <RN2ET_DIALOG> TYPE RN2ET_DIALOG.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN2ET_DIALOG.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN2ET_DIALOG
  INTO TABLE IT_RN2ET_DIALOG.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN2ET_DIALOG
*  INTO TABLE @DATA(IT_RN2ET_DIALOG2).
*--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_RN2ET_DIALOG INDEX 1 INTO DATA(WA_RN2ET_DIALOG2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN2ET_DIALOG ASSIGNING <RN2ET_DIALOG>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN2ET_DIALOG>-DYNPR = 1.
<RN2ET_DIALOG>-OBLIG = 1.
<RN2ET_DIALOG>-DEEA = 1.
<RN2ET_DIALOG>-NOBEZ = 1.
<RN2ET_DIALOG>-GRAPH = 1.

ENDLOOP.

LOOP AT IT_RN2ET_DIALOG INTO WA_RN2ET_DIALOG.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN2ET_DIALOG-HOEHE, sy-vline,
  WA_RN2ET_DIALOG-BREITE, sy-vline,
  WA_RN2ET_DIALOG-TXTLEN, sy-vline,
  WA_RN2ET_DIALOG-VARLOOP, sy-vline,
  WA_RN2ET_DIALOG-NUMOCC, sy-vline,
  WA_RN2ET_DIALOG-SCRY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN2ET_DIALOG 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_RN2ET_DIALOG 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_RN2ET_DIALOG INTO WA_RN2ET_DIALOG.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RN2ET_DIALOG_STR, 
DYNPR TYPE STRING,
OBLIG TYPE STRING,
DEEA TYPE STRING,
NOBEZ TYPE STRING,
GRAPH TYPE STRING,
HOEHE TYPE STRING,
BREITE TYPE STRING,
TXTLEN TYPE STRING,
VARLOOP TYPE STRING,
NUMOCC TYPE STRING,
SCRY TYPE STRING,
SCRX TYPE STRING,
SCRYBEZ TYPE STRING,
SCRXBEZ TYPE STRING,
DYNFNLANG TYPE STRING,
DYNNUM TYPE STRING,
DIOPT6 TYPE STRING,
DIOPT1 TYPE STRING,
DETEXT TYPE STRING,
SUBPOOL TYPE STRING,
SUBDYNP TYPE STRING,
OUTPUTLEN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN2ET_DIALOG_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_RN2ET_DIALOG_STR-DYNPR sy-vline 
WA_RN2ET_DIALOG_STR-OBLIG sy-vline 
WA_RN2ET_DIALOG_STR-DEEA sy-vline 
WA_RN2ET_DIALOG_STR-NOBEZ sy-vline 
WA_RN2ET_DIALOG_STR-GRAPH sy-vline 
WA_RN2ET_DIALOG_STR-HOEHE sy-vline 
WA_RN2ET_DIALOG_STR-BREITE sy-vline 
WA_RN2ET_DIALOG_STR-TXTLEN sy-vline 
WA_RN2ET_DIALOG_STR-VARLOOP sy-vline 
WA_RN2ET_DIALOG_STR-NUMOCC sy-vline 
WA_RN2ET_DIALOG_STR-SCRY sy-vline 
WA_RN2ET_DIALOG_STR-SCRX sy-vline 
WA_RN2ET_DIALOG_STR-SCRYBEZ sy-vline 
WA_RN2ET_DIALOG_STR-SCRXBEZ sy-vline 
WA_RN2ET_DIALOG_STR-DYNFNLANG sy-vline 
WA_RN2ET_DIALOG_STR-DYNNUM sy-vline 
WA_RN2ET_DIALOG_STR-DIOPT6 sy-vline 
WA_RN2ET_DIALOG_STR-DIOPT1 sy-vline 
WA_RN2ET_DIALOG_STR-DETEXT sy-vline 
WA_RN2ET_DIALOG_STR-SUBPOOL sy-vline 
WA_RN2ET_DIALOG_STR-SUBDYNP sy-vline 
WA_RN2ET_DIALOG_STR-OUTPUTLEN sy-vline      INTO ld_text SEPARATED BY SPACE.

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