ABAP Select data from SAP table BILL_DOC_DET_ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BILL_DOC_DET_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 BILL_DOC_DET_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 BILL_DOC_DET_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_BILL_DOC_DET_ITEM TYPE STANDARD TABLE OF BILL_DOC_DET_ITEM,
      WA_BILL_DOC_DET_ITEM TYPE BILL_DOC_DET_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: <BILL_DOC_DET_ITEM> TYPE BILL_DOC_DET_ITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BILL_DOC_DET_ITEM
*  INTO TABLE @DATA(IT_BILL_DOC_DET_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_BILL_DOC_DET_ITEM INDEX 1 INTO DATA(WA_BILL_DOC_DET_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BILL_DOC_DET_ITEM>-BURKS = 1.
<BILL_DOC_DET_ITEM>-J_1ABRNCH = 1.
<BILL_DOC_DET_ITEM>-BILL_DOC_NO = 1.
<BILL_DOC_DET_ITEM>-POSNR = 1.
<BILL_DOC_DET_ITEM>-MATNR_CODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BILL_DOC_DET_ITEM-MATNR_DESC, sy-vline,
  WA_BILL_DOC_DET_ITEM-UOM, sy-vline,
  WA_BILL_DOC_DET_ITEM-QUANTITY, sy-vline,
  WA_BILL_DOC_DET_ITEM-UNIT_PRICE, sy-vline,
  WA_BILL_DOC_DET_ITEM-CURR_ID, sy-vline,
  WA_BILL_DOC_DET_ITEM-ITEM_TOT_AMT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BILL_DOC_DET_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_BILL_DOC_DET_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_BILL_DOC_DET_ITEM INTO WA_BILL_DOC_DET_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 BILL_DOC_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BILL_DOC_DET_ITEM-BILL_DOC_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BILL_DOC_DET_ITEM-BILL_DOC_NO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR_CODE
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_BILL_DOC_DET_ITEM-MATNR_CODE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BILL_DOC_DET_ITEM-MATNR_CODE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field USERFIELDNUM1
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_BILL_DOC_DET_ITEM-USERFIELDNUM1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BILL_DOC_DET_ITEM-USERFIELDNUM1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field USERFIELDNUM2
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_BILL_DOC_DET_ITEM-USERFIELDNUM2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BILL_DOC_DET_ITEM-USERFIELDNUM2.
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_BILL_DOC_DET_ITEM_STR, 
BURKS TYPE STRING,
J_1ABRNCH TYPE STRING,
BILL_DOC_NO TYPE STRING,
POSNR TYPE STRING,
MATNR_CODE TYPE STRING,
MATNR_DESC TYPE STRING,
UOM TYPE STRING,
QUANTITY TYPE STRING,
UNIT_PRICE TYPE STRING,
CURR_ID TYPE STRING,
ITEM_TOT_AMT TYPE STRING,
OTHER_DATA TYPE STRING,
QUAN_FIELD TYPE STRING,
DATE_FIELD TYPE STRING,
COUNT_FIELD TYPE STRING,
NUM_FIELD2 TYPE STRING,
TEXT_FIELD_250 TYPE STRING,
USER_FIELD_1 TYPE STRING,
USER_FIELD_2 TYPE STRING,
USER_FIELD_3 TYPE STRING,
USER_FIELD_4 TYPE STRING,
USER_FIELD_A TYPE STRING,
USER_FIELD_B TYPE STRING,
USERFIELDNUM1 TYPE STRING,
USERFIELDNUM2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BILL_DOC_DET_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_BILL_DOC_DET_ITEM_STR-BURKS sy-vline 
WA_BILL_DOC_DET_ITEM_STR-J_1ABRNCH sy-vline 
WA_BILL_DOC_DET_ITEM_STR-BILL_DOC_NO sy-vline 
WA_BILL_DOC_DET_ITEM_STR-POSNR sy-vline 
WA_BILL_DOC_DET_ITEM_STR-MATNR_CODE sy-vline 
WA_BILL_DOC_DET_ITEM_STR-MATNR_DESC sy-vline 
WA_BILL_DOC_DET_ITEM_STR-UOM sy-vline 
WA_BILL_DOC_DET_ITEM_STR-QUANTITY sy-vline 
WA_BILL_DOC_DET_ITEM_STR-UNIT_PRICE sy-vline 
WA_BILL_DOC_DET_ITEM_STR-CURR_ID sy-vline 
WA_BILL_DOC_DET_ITEM_STR-ITEM_TOT_AMT sy-vline 
WA_BILL_DOC_DET_ITEM_STR-OTHER_DATA sy-vline 
WA_BILL_DOC_DET_ITEM_STR-QUAN_FIELD sy-vline 
WA_BILL_DOC_DET_ITEM_STR-DATE_FIELD sy-vline 
WA_BILL_DOC_DET_ITEM_STR-COUNT_FIELD sy-vline 
WA_BILL_DOC_DET_ITEM_STR-NUM_FIELD2 sy-vline 
WA_BILL_DOC_DET_ITEM_STR-TEXT_FIELD_250 sy-vline 
WA_BILL_DOC_DET_ITEM_STR-USER_FIELD_1 sy-vline 
WA_BILL_DOC_DET_ITEM_STR-USER_FIELD_2 sy-vline 
WA_BILL_DOC_DET_ITEM_STR-USER_FIELD_3 sy-vline 
WA_BILL_DOC_DET_ITEM_STR-USER_FIELD_4 sy-vline 
WA_BILL_DOC_DET_ITEM_STR-USER_FIELD_A sy-vline 
WA_BILL_DOC_DET_ITEM_STR-USER_FIELD_B sy-vline 
WA_BILL_DOC_DET_ITEM_STR-USERFIELDNUM1 sy-vline 
WA_BILL_DOC_DET_ITEM_STR-USERFIELDNUM2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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