ABAP Select data from SAP table /SCWM/L2SKTOTAL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCWM/L2SKTOTAL 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 /SCWM/L2SKTOTAL. 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 /SCWM/L2SKTOTAL 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_/SCWM/L2SKTOTAL TYPE STANDARD TABLE OF /SCWM/L2SKTOTAL,
      WA_/SCWM/L2SKTOTAL TYPE /SCWM/L2SKTOTAL,
      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: </SCWM/L2SKTOTAL> TYPE /SCWM/L2SKTOTAL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SCWM/L2SKTOTAL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCWM/L2SKTOTAL
  INTO TABLE IT_/SCWM/L2SKTOTAL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/L2SKTOTAL
*  INTO TABLE @DATA(IT_/SCWM/L2SKTOTAL2).
*--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_/SCWM/L2SKTOTAL INDEX 1 INTO DATA(WA_/SCWM/L2SKTOTAL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCWM/L2SKTOTAL ASSIGNING </SCWM/L2SKTOTAL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/L2SKTOTAL>-LGNUM = 1.
</SCWM/L2SKTOTAL>-WAVE = 1.
</SCWM/L2SKTOTAL>-L2SKR = 1.
</SCWM/L2SKTOTAL>-MATID = 1.
</SCWM/L2SKTOTAL>-BATCHID = 1.

ENDLOOP.

LOOP AT IT_/SCWM/L2SKTOTAL INTO WA_/SCWM/L2SKTOTAL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/L2SKTOTAL-CAT, sy-vline,
  WA_/SCWM/L2SKTOTAL-STOCK_DOCCAT, sy-vline,
  WA_/SCWM/L2SKTOTAL-STOCK_DOCNO, sy-vline,
  WA_/SCWM/L2SKTOTAL-STOCK_ITMNO, sy-vline,
  WA_/SCWM/L2SKTOTAL-DOCCAT, sy-vline,
  WA_/SCWM/L2SKTOTAL-STOCK_USAGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/L2SKTOTAL 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_/SCWM/L2SKTOTAL 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_/SCWM/L2SKTOTAL INTO WA_/SCWM/L2SKTOTAL.


*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 ALPH0, internal->external for field WAVE
CALL FUNCTION 'CONVERSION_EXIT_ALPH0_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/L2SKTOTAL-WAVE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/L2SKTOTAL-WAVE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MDLPD, internal->external for field MATID
CALL FUNCTION 'CONVERSION_EXIT_MDLPD_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/L2SKTOTAL-MATID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/L2SKTOTAL-MATID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BPMAP, internal->external for field OWNER
CALL FUNCTION 'CONVERSION_EXIT_BPMAP_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/L2SKTOTAL-OWNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/L2SKTOTAL-OWNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ENTITLED
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/L2SKTOTAL-ENTITLED
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/L2SKTOTAL-ENTITLED.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/L2SKTOTAL-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/L2SKTOTAL-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ALTME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/L2SKTOTAL-ALTME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/L2SKTOTAL-ALTME.
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_/SCWM/L2SKTOTAL_STR, 
LGNUM TYPE STRING,
WAVE TYPE STRING,
L2SKR TYPE STRING,
MATID TYPE STRING,
BATCHID TYPE STRING,
CAT TYPE STRING,
STOCK_DOCCAT TYPE STRING,
STOCK_DOCNO TYPE STRING,
STOCK_ITMNO TYPE STRING,
DOCCAT TYPE STRING,
STOCK_USAGE TYPE STRING,
OWNER TYPE STRING,
OWNER_ROLE TYPE STRING,
ENTITLED TYPE STRING,
ENTITLED_ROLE TYPE STRING,
STOCK_CNT TYPE STRING,
GEMNG TYPE STRING,
BDMNG TYPE STRING,
ENMNG TYPE STRING,
OFMNG TYPE STRING,
MEINS TYPE STRING,
GEMNA TYPE STRING,
BDMNA TYPE STRING,
ENMNA TYPE STRING,
OFMNA TYPE STRING,
ALTME TYPE STRING,
ANPOS TYPE STRING,
ANPGE TYPE STRING,
MAKTX TYPE STRING,
LETYP TYPE STRING,
LHMNG TYPE STRING,
LHMEH TYPE STRING,
CHVAL TYPE STRING,
CLASS_TYPE TYPE STRING,
CLASS TYPE STRING,
STATUS TYPE STRING,
OBJECTKEY_BT TYPE STRING,
VAL_CHAR TYPE STRING,
VAL_NUM TYPE STRING,
VAL_CURR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/L2SKTOTAL_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_/SCWM/L2SKTOTAL_STR-LGNUM sy-vline 
WA_/SCWM/L2SKTOTAL_STR-WAVE sy-vline 
WA_/SCWM/L2SKTOTAL_STR-L2SKR sy-vline 
WA_/SCWM/L2SKTOTAL_STR-MATID sy-vline 
WA_/SCWM/L2SKTOTAL_STR-BATCHID sy-vline 
WA_/SCWM/L2SKTOTAL_STR-CAT sy-vline 
WA_/SCWM/L2SKTOTAL_STR-STOCK_DOCCAT sy-vline 
WA_/SCWM/L2SKTOTAL_STR-STOCK_DOCNO sy-vline 
WA_/SCWM/L2SKTOTAL_STR-STOCK_ITMNO sy-vline 
WA_/SCWM/L2SKTOTAL_STR-DOCCAT sy-vline 
WA_/SCWM/L2SKTOTAL_STR-STOCK_USAGE sy-vline 
WA_/SCWM/L2SKTOTAL_STR-OWNER sy-vline 
WA_/SCWM/L2SKTOTAL_STR-OWNER_ROLE sy-vline 
WA_/SCWM/L2SKTOTAL_STR-ENTITLED sy-vline 
WA_/SCWM/L2SKTOTAL_STR-ENTITLED_ROLE sy-vline 
WA_/SCWM/L2SKTOTAL_STR-STOCK_CNT sy-vline 
WA_/SCWM/L2SKTOTAL_STR-GEMNG sy-vline 
WA_/SCWM/L2SKTOTAL_STR-BDMNG sy-vline 
WA_/SCWM/L2SKTOTAL_STR-ENMNG sy-vline 
WA_/SCWM/L2SKTOTAL_STR-OFMNG sy-vline 
WA_/SCWM/L2SKTOTAL_STR-MEINS sy-vline 
WA_/SCWM/L2SKTOTAL_STR-GEMNA sy-vline 
WA_/SCWM/L2SKTOTAL_STR-BDMNA sy-vline 
WA_/SCWM/L2SKTOTAL_STR-ENMNA sy-vline 
WA_/SCWM/L2SKTOTAL_STR-OFMNA sy-vline 
WA_/SCWM/L2SKTOTAL_STR-ALTME sy-vline 
WA_/SCWM/L2SKTOTAL_STR-ANPOS sy-vline 
WA_/SCWM/L2SKTOTAL_STR-ANPGE sy-vline 
WA_/SCWM/L2SKTOTAL_STR-MAKTX sy-vline 
WA_/SCWM/L2SKTOTAL_STR-LETYP sy-vline 
WA_/SCWM/L2SKTOTAL_STR-LHMNG sy-vline 
WA_/SCWM/L2SKTOTAL_STR-LHMEH sy-vline 
WA_/SCWM/L2SKTOTAL_STR-CHVAL sy-vline 
WA_/SCWM/L2SKTOTAL_STR-CLASS_TYPE sy-vline 
WA_/SCWM/L2SKTOTAL_STR-CLASS sy-vline 
WA_/SCWM/L2SKTOTAL_STR-STATUS sy-vline 
WA_/SCWM/L2SKTOTAL_STR-OBJECTKEY_BT sy-vline 
WA_/SCWM/L2SKTOTAL_STR-VAL_CHAR sy-vline 
WA_/SCWM/L2SKTOTAL_STR-VAL_NUM sy-vline 
WA_/SCWM/L2SKTOTAL_STR-VAL_CURR sy-vline      INTO ld_text SEPARATED BY SPACE.

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