ABAP Select data from SAP table SCWN_NA_S_RES_OBJECT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SCWN_NA_S_RES_OBJECT
*  INTO TABLE @DATA(IT_SCWN_NA_S_RES_OBJECT2).
*--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_SCWN_NA_S_RES_OBJECT INDEX 1 INTO DATA(WA_SCWN_NA_S_RES_OBJECT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SCWN_NA_S_RES_OBJECT>-CHECK = 1.
<SCWN_NA_S_RES_OBJECT>-ICON_LONG = 1.
<SCWN_NA_S_RES_OBJECT>-OBJ_TYPE = 1.
<SCWN_NA_S_RES_OBJECT>-OBJ_NAME = 1.
<SCWN_NA_S_RES_OBJECT>-OBJ_NAME_INT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SCWN_NA_S_RES_OBJECT-ICON_MSG, sy-vline,
  WA_SCWN_NA_S_RES_OBJECT-ICON_MOD, sy-vline,
  WA_SCWN_NA_S_RES_OBJECT-COMMAND, sy-vline,
  WA_SCWN_NA_S_RES_OBJECT-TEXTLINE, sy-vline,
  WA_SCWN_NA_S_RES_OBJECT-IS_ACTIVE, sy-vline,
  WA_SCWN_NA_S_RES_OBJECT-IS_MAIN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SCWN_NA_S_RES_OBJECT 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_SCWN_NA_S_RES_OBJECT 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_SCWN_NA_S_RES_OBJECT INTO WA_SCWN_NA_S_RES_OBJECT.


*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 LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_SCWN_NA_S_RES_OBJECT-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SCWN_NA_S_RES_OBJECT-LANGU.
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_SCWN_NA_S_RES_OBJECT_STR, 
CHECK TYPE STRING,
ICON_LONG TYPE STRING,
OBJ_TYPE TYPE STRING,
OBJ_NAME TYPE STRING,
OBJ_NAME_INT TYPE STRING,
ICON_MSG TYPE STRING,
ICON_MOD TYPE STRING,
COMMAND TYPE STRING,
TEXTLINE TYPE STRING,
IS_ACTIVE TYPE STRING,
IS_MAIN TYPE STRING,
LEVEL TYPE STRING,
SEVERITY TYPE STRING,
LANGU TYPE STRING,
AG TYPE STRING,
MSGNR TYPE STRING,
NEWOBJ TYPE STRING,
VAR1 TYPE STRING,
VAR2 TYPE STRING,
VAR3 TYPE STRING,
VAR4 TYPE STRING,
CELLTAB TYPE STRING,
CELLCOLOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SCWN_NA_S_RES_OBJECT_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_SCWN_NA_S_RES_OBJECT_STR-CHECK sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-ICON_LONG sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-OBJ_TYPE sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-OBJ_NAME sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-OBJ_NAME_INT sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-ICON_MSG sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-ICON_MOD sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-COMMAND sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-TEXTLINE sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-IS_ACTIVE sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-IS_MAIN sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-LEVEL sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-SEVERITY sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-LANGU sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-AG sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-MSGNR sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-NEWOBJ sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-VAR1 sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-VAR2 sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-VAR3 sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-VAR4 sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-CELLTAB sy-vline 
WA_SCWN_NA_S_RES_OBJECT_STR-CELLCOLOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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