ABAP Select data from SAP table /CWM/STOCK_OVERVIEW_ITEM_S_ADD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /CWM/STOCK_OVERVIEW_ITEM_S_ADD 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 /CWM/STOCK_OVERVIEW_ITEM_S_ADD. 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 /CWM/STOCK_OVERVIEW_ITEM_S_ADD 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_/CWM/STOCK_OVERVIEW_ITEM_S_ADD TYPE STANDARD TABLE OF /CWM/STOCK_OVERVIEW_ITEM_S_ADD,
      WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD TYPE /CWM/STOCK_OVERVIEW_ITEM_S_ADD,
      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: </CWM/STOCK_OVERVIEW_ITEM_S_ADD> TYPE /CWM/STOCK_OVERVIEW_ITEM_S_ADD.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /CWM/STOCK_OVERVIEW_ITEM_S_ADD
  INTO TABLE IT_/CWM/STOCK_OVERVIEW_ITEM_S_ADD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /CWM/STOCK_OVERVIEW_ITEM_S_ADD
*  INTO TABLE @DATA(IT_/CWM/STOCK_OVERVIEW_ITEM_S_ADD2).
*--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_/CWM/STOCK_OVERVIEW_ITEM_S_ADD INDEX 1 INTO DATA(WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/CWM/STOCK_OVERVIEW_ITEM_S_ADD ASSIGNING </CWM/STOCK_OVERVIEW_ITEM_S_ADD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</CWM/STOCK_OVERVIEW_ITEM_S_ADD>-EISBE = 1.
</CWM/STOCK_OVERVIEW_ITEM_S_ADD>-BSTMI = 1.
</CWM/STOCK_OVERVIEW_ITEM_S_ADD>-BSTMA = 1.
</CWM/STOCK_OVERVIEW_ITEM_S_ADD>-MABST = 1.
</CWM/STOCK_OVERVIEW_ITEM_S_ADD>-MINBE = 1.

ENDLOOP.

LOOP AT IT_/CWM/STOCK_OVERVIEW_ITEM_S_ADD INTO WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD-MEINS, sy-vline,
  WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD-PLIFZ, sy-vline,
  WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD-DZEIT, sy-vline,
  WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD-MHDRZ, sy-vline,
  WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD-MHDHB, sy-vline,
  WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD-SALK3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD 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_/CWM/STOCK_OVERVIEW_ITEM_S_ADD 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_/CWM/STOCK_OVERVIEW_ITEM_S_ADD INTO WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD.


*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 CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field /CWM/VEMEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD-/CWM/VEMEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD-/CWM/VEMEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ALTME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD-ALTME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD-ALTME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD-PRCTR.
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_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR, 
EISBE TYPE STRING,
BSTMI TYPE STRING,
BSTMA TYPE STRING,
MABST TYPE STRING,
MINBE TYPE STRING,
MEINS TYPE STRING,
PLIFZ TYPE STRING,
DZEIT TYPE STRING,
MHDRZ TYPE STRING,
MHDHB TYPE STRING,
SALK3 TYPE STRING,
WAERS TYPE STRING,
/CWM/VEMNG TYPE STRING,
/CWM/VEMEH TYPE STRING,
ALTMG TYPE STRING,
ALTME TYPE STRING,
ERSDA TYPE STRING,
BESKZ TYPE STRING,
FEVOR TYPE STRING,
PRCTR TYPE STRING,
BISMT TYPE STRING,
ZUSTD TYPE STRING,
LGPBE TYPE STRING,
LGORT_LGPBE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_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_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-EISBE sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-BSTMI sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-BSTMA sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-MABST sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-MINBE sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-MEINS sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-PLIFZ sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-DZEIT sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-MHDRZ sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-MHDHB sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-SALK3 sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-WAERS sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-/CWM/VEMNG sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-/CWM/VEMEH sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-ALTMG sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-ALTME sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-ERSDA sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-BESKZ sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-FEVOR sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-PRCTR sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-BISMT sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-ZUSTD sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-LGPBE sy-vline 
WA_/CWM/STOCK_OVERVIEW_ITEM_S_ADD_STR-LGORT_LGPBE sy-vline      INTO ld_text SEPARATED BY SPACE.

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