ABAP Select data from SAP table FDC_S_ACCDOC_HDR_BS_ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FDC_S_ACCDOC_HDR_BS_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 FDC_S_ACCDOC_HDR_BS_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 FDC_S_ACCDOC_HDR_BS_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_FDC_S_ACCDOC_HDR_BS_ITEM TYPE STANDARD TABLE OF FDC_S_ACCDOC_HDR_BS_ITEM,
      WA_FDC_S_ACCDOC_HDR_BS_ITEM TYPE FDC_S_ACCDOC_HDR_BS_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: <FDC_S_ACCDOC_HDR_BS_ITEM> TYPE FDC_S_ACCDOC_HDR_BS_ITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FDC_S_ACCDOC_HDR_BS_ITEM
*  INTO TABLE @DATA(IT_FDC_S_ACCDOC_HDR_BS_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_FDC_S_ACCDOC_HDR_BS_ITEM INDEX 1 INTO DATA(WA_FDC_S_ACCDOC_HDR_BS_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FDC_S_ACCDOC_HDR_BS_ITEM>-KUKEY = 1.
<FDC_S_ACCDOC_HDR_BS_ITEM>-ESNUM = 1.
<FDC_S_ACCDOC_HDR_BS_ITEM>-REPROCREASONCODE = 1.
<FDC_S_ACCDOC_HDR_BS_ITEM>-AVKOA = 1.
<FDC_S_ACCDOC_HDR_BS_ITEM>-AVKON = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FDC_S_ACCDOC_HDR_BS_ITEM-TATYP, sy-vline,
  WA_FDC_S_ACCDOC_HDR_BS_ITEM-FWAER, sy-vline,
  WA_FDC_S_ACCDOC_HDR_BS_ITEM-FWBTR, sy-vline,
  WA_FDC_S_ACCDOC_HDR_BS_ITEM-RULEUUID, sy-vline,
  WA_FDC_S_ACCDOC_HDR_BS_ITEM-WAERS, sy-vline,
  WA_FDC_S_ACCDOC_HDR_BS_ITEM-KWBTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FDC_S_ACCDOC_HDR_BS_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_FDC_S_ACCDOC_HDR_BS_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_FDC_S_ACCDOC_HDR_BS_ITEM INTO WA_FDC_S_ACCDOC_HDR_BS_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 AVKON
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FDC_S_ACCDOC_HDR_BS_ITEM-AVKON
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDC_S_ACCDOC_HDR_BS_ITEM-AVKON.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field FWBTR
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_FDC_S_ACCDOC_HDR_BS_ITEM-FWBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDC_S_ACCDOC_HDR_BS_ITEM-FWBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field KWBTR
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_FDC_S_ACCDOC_HDR_BS_ITEM-KWBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDC_S_ACCDOC_HDR_BS_ITEM-KWBTR.
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_FDC_S_ACCDOC_HDR_BS_ITEM_STR, 
KUKEY TYPE STRING,
ESNUM TYPE STRING,
REPROCREASONCODE TYPE STRING,
AVKOA TYPE STRING,
AVKON TYPE STRING,
TATYP TYPE STRING,
FWAER TYPE STRING,
FWBTR TYPE STRING,
RULEUUID TYPE STRING,
WAERS TYPE STRING,
KWBTR TYPE STRING,
REPROCGRULEPOSTGPROCEDURETYPE TYPE STRING,
ISINTERIMSPOSTING TYPE STRING,
NOT_COMPLETED_AFTR_POST_ON_ACC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FDC_S_ACCDOC_HDR_BS_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_FDC_S_ACCDOC_HDR_BS_ITEM_STR-KUKEY sy-vline 
WA_FDC_S_ACCDOC_HDR_BS_ITEM_STR-ESNUM sy-vline 
WA_FDC_S_ACCDOC_HDR_BS_ITEM_STR-REPROCREASONCODE sy-vline 
WA_FDC_S_ACCDOC_HDR_BS_ITEM_STR-AVKOA sy-vline 
WA_FDC_S_ACCDOC_HDR_BS_ITEM_STR-AVKON sy-vline 
WA_FDC_S_ACCDOC_HDR_BS_ITEM_STR-TATYP sy-vline 
WA_FDC_S_ACCDOC_HDR_BS_ITEM_STR-FWAER sy-vline 
WA_FDC_S_ACCDOC_HDR_BS_ITEM_STR-FWBTR sy-vline 
WA_FDC_S_ACCDOC_HDR_BS_ITEM_STR-RULEUUID sy-vline 
WA_FDC_S_ACCDOC_HDR_BS_ITEM_STR-WAERS sy-vline 
WA_FDC_S_ACCDOC_HDR_BS_ITEM_STR-KWBTR sy-vline 
WA_FDC_S_ACCDOC_HDR_BS_ITEM_STR-REPROCGRULEPOSTGPROCEDURETYPE sy-vline 
WA_FDC_S_ACCDOC_HDR_BS_ITEM_STR-ISINTERIMSPOSTING sy-vline 
WA_FDC_S_ACCDOC_HDR_BS_ITEM_STR-NOT_COMPLETED_AFTR_POST_ON_ACC sy-vline      INTO ld_text SEPARATED BY SPACE.

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