ABAP Select data from SAP table SCWN_NA_S_OBJECT_TO_BE_CHANGED 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_OBJECT_TO_BE_CHANGED 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_OBJECT_TO_BE_CHANGED. 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_OBJECT_TO_BE_CHANGED 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_OBJECT_TO_BE_CHANGED TYPE STANDARD TABLE OF SCWN_NA_S_OBJECT_TO_BE_CHANGED,
      WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED TYPE SCWN_NA_S_OBJECT_TO_BE_CHANGED,
      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_OBJECT_TO_BE_CHANGED> TYPE SCWN_NA_S_OBJECT_TO_BE_CHANGED.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SCWN_NA_S_OBJECT_TO_BE_CHANGED
*  INTO TABLE @DATA(IT_SCWN_NA_S_OBJECT_TO_BE_CHANGED2).
*--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_OBJECT_TO_BE_CHANGED INDEX 1 INTO DATA(WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SCWN_NA_S_OBJECT_TO_BE_CHANGED>-HEADER_LOC = 1.
<SCWN_NA_S_OBJECT_TO_BE_CHANGED>-OLD = 1.
<SCWN_NA_S_OBJECT_TO_BE_CHANGED>-PGMID = 1.
<SCWN_NA_S_OBJECT_TO_BE_CHANGED>-OBJTYPE = 1.
<SCWN_NA_S_OBJECT_TO_BE_CHANGED>-OBJNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED-VERSNO, sy-vline,
  WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED-DESTINATION, sy-vline,
  WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED-NEW, sy-vline,
  WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED-PGMID, sy-vline,
  WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED-OBJTYPE, sy-vline,
  WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED-OBJNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED 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_OBJECT_TO_BE_CHANGED 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_OBJECT_TO_BE_CHANGED INTO WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED.


*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_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR, 
HEADER_LOC TYPE STRING,
OLD TYPE STRING,
PGMID TYPE STRING,
OBJTYPE TYPE STRING,
OBJNAME TYPE STRING,
VERSNO TYPE STRING,
DESTINATION TYPE STRING,
NEW TYPE STRING,
PGMID TYPE STRING,
OBJTYPE TYPE STRING,
OBJNAME TYPE STRING,
VERSNO TYPE STRING,
DESTINATION TYPE STRING,
HEADER_REM TYPE STRING,
OLD TYPE STRING,
PGMID TYPE STRING,
OBJTYPE TYPE STRING,
OBJNAME TYPE STRING,
VERSNO TYPE STRING,
DESTINATION TYPE STRING,
NEW TYPE STRING,
PGMID TYPE STRING,
OBJTYPE TYPE STRING,
OBJNAME TYPE STRING,
VERSNO TYPE STRING,
DESTINATION TYPE STRING,
TRKEY_NEW TYPE STRING,
DEVCLASS TYPE STRING,
OBJ_TYPE TYPE STRING,
OBJ_NAME TYPE STRING,
SUB_TYPE TYPE STRING,
SUB_NAME TYPE STRING,
SRC_SYSTEM TYPE STRING,
TAR_REQUEST TYPE STRING,
WITH_MODIFICATION_ASSISTANT TYPE STRING,
MESSAGES TYPE STRING,
OBJECT_OLD TYPE STRING,
OBJECT_NEW TYPE STRING,
DELTA TYPE STRING,
USER_CONFIRMED TYPE STRING,
DELTA_EMPTY TYPE STRING,
OBJECT_AND_TARGET_EMPTY TYPE STRING,
SRC_NEW_EQ_TARGET_OLD TYPE STRING,
INCOMPL_DELTA_TRANSFER TYPE STRING,
DELTA_MODIFIED TYPE STRING,
REAPPLIED TYPE STRING,
SYNTAX_ERROR_WITH_CHANGES TYPE STRING,
SYNTAX_ERROR_WITHOUT_CHANGES TYPE STRING,
SYNTAX_ERROR_MESSAGE TYPE STRING,
OBJ_HEADER TYPE STRING,
PGMID TYPE STRING,
OBJTYPE TYPE STRING,
OBJNAME TYPE STRING,
VERSNO TYPE STRING,
DESTINATION TYPE STRING,
INCLUDE_NAME TYPE STRING,
LINNO TYPE STRING,
WORD TYPE STRING,
TEXT TYPE STRING,
PRECONDITIONS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_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_OBJECT_TO_BE_CHANGED_STR-HEADER_LOC sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OLD sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-PGMID sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OBJTYPE sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OBJNAME sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-VERSNO sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-DESTINATION sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-NEW sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-PGMID sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OBJTYPE sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OBJNAME sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-VERSNO sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-DESTINATION sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-HEADER_REM sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OLD sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-PGMID sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OBJTYPE sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OBJNAME sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-VERSNO sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-DESTINATION sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-NEW sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-PGMID sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OBJTYPE sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OBJNAME sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-VERSNO sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-DESTINATION sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-TRKEY_NEW sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-DEVCLASS sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OBJ_TYPE sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OBJ_NAME sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-SUB_TYPE sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-SUB_NAME sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-SRC_SYSTEM sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-TAR_REQUEST sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-WITH_MODIFICATION_ASSISTANT sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-MESSAGES sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OBJECT_OLD sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OBJECT_NEW sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-DELTA sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-USER_CONFIRMED sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-DELTA_EMPTY sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OBJECT_AND_TARGET_EMPTY sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-SRC_NEW_EQ_TARGET_OLD sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-INCOMPL_DELTA_TRANSFER sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-DELTA_MODIFIED sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-REAPPLIED sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-SYNTAX_ERROR_WITH_CHANGES sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-SYNTAX_ERROR_WITHOUT_CHANGES sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-SYNTAX_ERROR_MESSAGE sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OBJ_HEADER sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-PGMID sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OBJTYPE sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-OBJNAME sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-VERSNO sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-DESTINATION sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-INCLUDE_NAME sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-LINNO sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-WORD sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-TEXT sy-vline 
WA_SCWN_NA_S_OBJECT_TO_BE_CHANGED_STR-PRECONDITIONS sy-vline      INTO ld_text SEPARATED BY SPACE.

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