ABAP Select data from SAP table EK08BN_ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EK08BN_ITEM 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 EK08BN_ITEM. 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 EK08BN_ITEM 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_EK08BN_ITEM TYPE STANDARD TABLE OF EK08BN_ITEM,
      WA_EK08BN_ITEM TYPE EK08BN_ITEM,
      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: <EK08BN_ITEM> TYPE EK08BN_ITEM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_EK08BN_ITEM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM EK08BN_ITEM
  INTO TABLE IT_EK08BN_ITEM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EK08BN_ITEM
*  INTO TABLE @DATA(IT_EK08BN_ITEM2).
*--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_EK08BN_ITEM INDEX 1 INTO DATA(WA_EK08BN_ITEM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_EK08BN_ITEM ASSIGNING <EK08BN_ITEM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EK08BN_ITEM>-EBELN = 1.
<EK08BN_ITEM>-EBELP = 1.
<EK08BN_ITEM>-STUNR = 1.
<EK08BN_ITEM>-ZAEHK = 1.
<EK08BN_ITEM>-BSMNG = 1.

ENDLOOP.

LOOP AT IT_EK08BN_ITEM INTO WA_EK08BN_ITEM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EK08BN_ITEM-NETWR, sy-vline,
  WA_EK08BN_ITEM-WEWRT, sy-vline,
  WA_EK08BN_ITEM-WEWWR, sy-vline,
  WA_EK08BN_ITEM-WEMNG, sy-vline,
  WA_EK08BN_ITEM-BPWEM, sy-vline,
  WA_EK08BN_ITEM-REFWR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EK08BN_ITEM 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_EK08BN_ITEM 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_EK08BN_ITEM INTO WA_EK08BN_ITEM.


*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 EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EK08BN_ITEM-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EK08BN_ITEM-EBELN.
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_EK08BN_ITEM_STR, 
EBELN TYPE STRING,
EBELP TYPE STRING,
STUNR TYPE STRING,
ZAEHK TYPE STRING,
BSMNG TYPE STRING,
NETWR TYPE STRING,
WEWRT TYPE STRING,
WEWWR TYPE STRING,
WEMNG TYPE STRING,
BPWEM TYPE STRING,
REFWR TYPE STRING,
REEWR TYPE STRING,
REWWR TYPE STRING,
REWRT TYPE STRING,
REMNG TYPE STRING,
BPREM TYPE STRING,
BPUMZ TYPE STRING,
BPUMN TYPE STRING,
PSTYP TYPE STRING,
WEPOS TYPE STRING,
NOQUANTITY TYPE STRING,
KDATB TYPE STRING,
KDATE TYPE STRING,
RETPO TYPE STRING,
FRBNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EK08BN_ITEM_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_EK08BN_ITEM_STR-EBELN sy-vline 
WA_EK08BN_ITEM_STR-EBELP sy-vline 
WA_EK08BN_ITEM_STR-STUNR sy-vline 
WA_EK08BN_ITEM_STR-ZAEHK sy-vline 
WA_EK08BN_ITEM_STR-BSMNG sy-vline 
WA_EK08BN_ITEM_STR-NETWR sy-vline 
WA_EK08BN_ITEM_STR-WEWRT sy-vline 
WA_EK08BN_ITEM_STR-WEWWR sy-vline 
WA_EK08BN_ITEM_STR-WEMNG sy-vline 
WA_EK08BN_ITEM_STR-BPWEM sy-vline 
WA_EK08BN_ITEM_STR-REFWR sy-vline 
WA_EK08BN_ITEM_STR-REEWR sy-vline 
WA_EK08BN_ITEM_STR-REWWR sy-vline 
WA_EK08BN_ITEM_STR-REWRT sy-vline 
WA_EK08BN_ITEM_STR-REMNG sy-vline 
WA_EK08BN_ITEM_STR-BPREM sy-vline 
WA_EK08BN_ITEM_STR-BPUMZ sy-vline 
WA_EK08BN_ITEM_STR-BPUMN sy-vline 
WA_EK08BN_ITEM_STR-PSTYP sy-vline 
WA_EK08BN_ITEM_STR-WEPOS sy-vline 
WA_EK08BN_ITEM_STR-NOQUANTITY sy-vline 
WA_EK08BN_ITEM_STR-KDATB sy-vline 
WA_EK08BN_ITEM_STR-KDATE sy-vline 
WA_EK08BN_ITEM_STR-RETPO sy-vline 
WA_EK08BN_ITEM_STR-FRBNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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