ABAP Select data from SAP table BAPIDLVITEMSTS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPIDLVITEMSTS
*  INTO TABLE @DATA(IT_BAPIDLVITEMSTS2).
*--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_BAPIDLVITEMSTS INDEX 1 INTO DATA(WA_BAPIDLVITEMSTS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPIDLVITEMSTS>-MANDT = 1.
<BAPIDLVITEMSTS>-VBELN = 1.
<BAPIDLVITEMSTS>-POSNR = 1.
<BAPIDLVITEMSTS>-RFSTA = 1.
<BAPIDLVITEMSTS>-RFGSA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPIDLVITEMSTS-BESTA, sy-vline,
  WA_BAPIDLVITEMSTS-LFSTA, sy-vline,
  WA_BAPIDLVITEMSTS-LFGSA, sy-vline,
  WA_BAPIDLVITEMSTS-WBSTA, sy-vline,
  WA_BAPIDLVITEMSTS-FKSTA, sy-vline,
  WA_BAPIDLVITEMSTS-FKSAA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPIDLVITEMSTS 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_BAPIDLVITEMSTS 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_BAPIDLVITEMSTS INTO WA_BAPIDLVITEMSTS.


*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_BAPIDLVITEMSTS-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIDLVITEMSTS-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_BAPIDLVITEMSTS_STR, 
MANDT TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
RFSTA TYPE STRING,
RFGSA TYPE STRING,
BESTA TYPE STRING,
LFSTA TYPE STRING,
LFGSA TYPE STRING,
WBSTA TYPE STRING,
FKSTA TYPE STRING,
FKSAA TYPE STRING,
ABSTA TYPE STRING,
GBSTA TYPE STRING,
KOSTA TYPE STRING,
LVSTA TYPE STRING,
UVALL TYPE STRING,
UVVLK TYPE STRING,
UVFAK TYPE STRING,
UVPRS TYPE STRING,
FKIVP TYPE STRING,
UVP01 TYPE STRING,
UVP02 TYPE STRING,
UVP03 TYPE STRING,
UVP04 TYPE STRING,
UVP05 TYPE STRING,
PKSTA TYPE STRING,
KOQUA TYPE STRING,
COSTA TYPE STRING,
CMPPI TYPE STRING,
CMPPJ TYPE STRING,
UVPIK TYPE STRING,
UVPAK TYPE STRING,
UVWAK TYPE STRING,
DCSTA TYPE STRING,
RRSTA TYPE STRING,
VLSTP TYPE STRING,
FSSTA TYPE STRING,
LSSTA TYPE STRING,
PDSTA TYPE STRING,
MANEK TYPE STRING,
HDALL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPIDLVITEMSTS_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_BAPIDLVITEMSTS_STR-MANDT sy-vline 
WA_BAPIDLVITEMSTS_STR-VBELN sy-vline 
WA_BAPIDLVITEMSTS_STR-POSNR sy-vline 
WA_BAPIDLVITEMSTS_STR-RFSTA sy-vline 
WA_BAPIDLVITEMSTS_STR-RFGSA sy-vline 
WA_BAPIDLVITEMSTS_STR-BESTA sy-vline 
WA_BAPIDLVITEMSTS_STR-LFSTA sy-vline 
WA_BAPIDLVITEMSTS_STR-LFGSA sy-vline 
WA_BAPIDLVITEMSTS_STR-WBSTA sy-vline 
WA_BAPIDLVITEMSTS_STR-FKSTA sy-vline 
WA_BAPIDLVITEMSTS_STR-FKSAA sy-vline 
WA_BAPIDLVITEMSTS_STR-ABSTA sy-vline 
WA_BAPIDLVITEMSTS_STR-GBSTA sy-vline 
WA_BAPIDLVITEMSTS_STR-KOSTA sy-vline 
WA_BAPIDLVITEMSTS_STR-LVSTA sy-vline 
WA_BAPIDLVITEMSTS_STR-UVALL sy-vline 
WA_BAPIDLVITEMSTS_STR-UVVLK sy-vline 
WA_BAPIDLVITEMSTS_STR-UVFAK sy-vline 
WA_BAPIDLVITEMSTS_STR-UVPRS sy-vline 
WA_BAPIDLVITEMSTS_STR-FKIVP sy-vline 
WA_BAPIDLVITEMSTS_STR-UVP01 sy-vline 
WA_BAPIDLVITEMSTS_STR-UVP02 sy-vline 
WA_BAPIDLVITEMSTS_STR-UVP03 sy-vline 
WA_BAPIDLVITEMSTS_STR-UVP04 sy-vline 
WA_BAPIDLVITEMSTS_STR-UVP05 sy-vline 
WA_BAPIDLVITEMSTS_STR-PKSTA sy-vline 
WA_BAPIDLVITEMSTS_STR-KOQUA sy-vline 
WA_BAPIDLVITEMSTS_STR-COSTA sy-vline 
WA_BAPIDLVITEMSTS_STR-CMPPI sy-vline 
WA_BAPIDLVITEMSTS_STR-CMPPJ sy-vline 
WA_BAPIDLVITEMSTS_STR-UVPIK sy-vline 
WA_BAPIDLVITEMSTS_STR-UVPAK sy-vline 
WA_BAPIDLVITEMSTS_STR-UVWAK sy-vline 
WA_BAPIDLVITEMSTS_STR-DCSTA sy-vline 
WA_BAPIDLVITEMSTS_STR-RRSTA sy-vline 
WA_BAPIDLVITEMSTS_STR-VLSTP sy-vline 
WA_BAPIDLVITEMSTS_STR-FSSTA sy-vline 
WA_BAPIDLVITEMSTS_STR-LSSTA sy-vline 
WA_BAPIDLVITEMSTS_STR-PDSTA sy-vline 
WA_BAPIDLVITEMSTS_STR-MANEK sy-vline 
WA_BAPIDLVITEMSTS_STR-HDALL sy-vline      INTO ld_text SEPARATED BY SPACE.

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