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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCWM/BAPIDLVHDRSTS
*  INTO TABLE @DATA(IT_/SCWM/BAPIDLVHDRSTS2).
*--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/BAPIDLVHDRSTS INDEX 1 INTO DATA(WA_/SCWM/BAPIDLVHDRSTS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCWM/BAPIDLVHDRSTS>-MANDT = 1.
</SCWM/BAPIDLVHDRSTS>-VBELN = 1.
</SCWM/BAPIDLVHDRSTS>-RFSTK = 1.
</SCWM/BAPIDLVHDRSTS>-RFGSK = 1.
</SCWM/BAPIDLVHDRSTS>-BESTK = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCWM/BAPIDLVHDRSTS-LFSTK, sy-vline,
  WA_/SCWM/BAPIDLVHDRSTS-LFGSK, sy-vline,
  WA_/SCWM/BAPIDLVHDRSTS-WBSTK, sy-vline,
  WA_/SCWM/BAPIDLVHDRSTS-FKSTK, sy-vline,
  WA_/SCWM/BAPIDLVHDRSTS-FKSAK, sy-vline,
  WA_/SCWM/BAPIDLVHDRSTS-BUCHK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCWM/BAPIDLVHDRSTS 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/BAPIDLVHDRSTS 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/BAPIDLVHDRSTS INTO WA_/SCWM/BAPIDLVHDRSTS.


*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 ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SCWM/BAPIDLVHDRSTS-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCWM/BAPIDLVHDRSTS-VBELN.
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/BAPIDLVHDRSTS_STR, 
MANDT TYPE STRING,
VBELN TYPE STRING,
RFSTK TYPE STRING,
RFGSK TYPE STRING,
BESTK TYPE STRING,
LFSTK TYPE STRING,
LFGSK TYPE STRING,
WBSTK TYPE STRING,
FKSTK TYPE STRING,
FKSAK TYPE STRING,
BUCHK TYPE STRING,
ABSTK TYPE STRING,
GBSTK TYPE STRING,
KOSTK TYPE STRING,
LVSTK TYPE STRING,
UVALS TYPE STRING,
UVVLS TYPE STRING,
UVFAS TYPE STRING,
UVALL TYPE STRING,
UVVLK TYPE STRING,
UVFAK TYPE STRING,
UVPRS TYPE STRING,
VBTYP TYPE STRING,
VBOBJ TYPE STRING,
AEDAT TYPE STRING,
FKIVK TYPE STRING,
RELIK TYPE STRING,
UVK01 TYPE STRING,
UVK02 TYPE STRING,
UVK03 TYPE STRING,
UVK04 TYPE STRING,
UVK05 TYPE STRING,
UVS01 TYPE STRING,
UVS02 TYPE STRING,
UVS03 TYPE STRING,
UVS04 TYPE STRING,
UVS05 TYPE STRING,
PKSTK TYPE STRING,
CMPSA TYPE STRING,
CMPSB TYPE STRING,
CMPSC TYPE STRING,
CMPSD TYPE STRING,
CMPSE TYPE STRING,
CMPSF TYPE STRING,
CMPSG TYPE STRING,
CMPSH TYPE STRING,
CMPSI TYPE STRING,
CMPSJ TYPE STRING,
CMPSK TYPE STRING,
CMPSL TYPE STRING,
CMPS0 TYPE STRING,
CMPS1 TYPE STRING,
CMPS2 TYPE STRING,
CMGST TYPE STRING,
TRSTA TYPE STRING,
KOQUK TYPE STRING,
COSTA TYPE STRING,
SAPRL TYPE STRING,
UVPAS TYPE STRING,
UVPIS TYPE STRING,
UVWAS TYPE STRING,
UVPAK TYPE STRING,
UVPIK TYPE STRING,
UVWAK TYPE STRING,
UVGEK TYPE STRING,
CMPSM TYPE STRING,
DCSTK TYPE STRING,
VESTK TYPE STRING,
VLSTK TYPE STRING,
RRSTA TYPE STRING,
BLOCK TYPE STRING,
FSSTK TYPE STRING,
LSSTK TYPE STRING,
SPSTG TYPE STRING,
PDSTK TYPE STRING,
FMSTK TYPE STRING,
MANEK TYPE STRING,
SPE_TMPID TYPE STRING,
HDALL TYPE STRING,
HDALS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCWM/BAPIDLVHDRSTS_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/BAPIDLVHDRSTS_STR-MANDT sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-VBELN sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-RFSTK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-RFGSK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-BESTK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-LFSTK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-LFGSK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-WBSTK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-FKSTK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-FKSAK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-BUCHK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-ABSTK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-GBSTK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-KOSTK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-LVSTK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVALS sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVVLS sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVFAS sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVALL sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVVLK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVFAK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVPRS sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-VBTYP sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-VBOBJ sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-AEDAT sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-FKIVK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-RELIK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVK01 sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVK02 sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVK03 sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVK04 sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVK05 sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVS01 sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVS02 sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVS03 sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVS04 sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVS05 sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-PKSTK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-CMPSA sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-CMPSB sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-CMPSC sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-CMPSD sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-CMPSE sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-CMPSF sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-CMPSG sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-CMPSH sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-CMPSI sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-CMPSJ sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-CMPSK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-CMPSL sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-CMPS0 sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-CMPS1 sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-CMPS2 sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-CMGST sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-TRSTA sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-KOQUK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-COSTA sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-SAPRL sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVPAS sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVPIS sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVWAS sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVPAK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVPIK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVWAK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-UVGEK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-CMPSM sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-DCSTK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-VESTK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-VLSTK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-RRSTA sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-BLOCK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-FSSTK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-LSSTK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-SPSTG sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-PDSTK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-FMSTK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-MANEK sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-SPE_TMPID sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-HDALL sy-vline 
WA_/SCWM/BAPIDLVHDRSTS_STR-HDALS sy-vline      INTO ld_text SEPARATED BY SPACE.

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