ABAP Select data from SAP table FDM_INVHISTORY_ITEMS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FDM_INVHISTORY_ITEMS
*  INTO TABLE @DATA(IT_FDM_INVHISTORY_ITEMS2).
*--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_FDM_INVHISTORY_ITEMS INDEX 1 INTO DATA(WA_FDM_INVHISTORY_ITEMS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FDM_INVHISTORY_ITEMS>-DOCFLOW_KEY = 1.
<FDM_INVHISTORY_ITEMS>-AMOUNT = 1.
<FDM_INVHISTORY_ITEMS>-CURRENCY = 1.
<FDM_INVHISTORY_ITEMS>-OPEN_AMOUNT = 1.
<FDM_INVHISTORY_ITEMS>-CURR_OPEN_AMOUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FDM_INVHISTORY_ITEMS-ASSIGNED_AMOUNT, sy-vline,
  WA_FDM_INVHISTORY_ITEMS-CURR_ASS_AMOUNT, sy-vline,
  WA_FDM_INVHISTORY_ITEMS-BUKRS, sy-vline,
  WA_FDM_INVHISTORY_ITEMS-BELNR, sy-vline,
  WA_FDM_INVHISTORY_ITEMS-GJAHR, sy-vline,
  WA_FDM_INVHISTORY_ITEMS-BUZEI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FDM_INVHISTORY_ITEMS 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_FDM_INVHISTORY_ITEMS 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_FDM_INVHISTORY_ITEMS INTO WA_FDM_INVHISTORY_ITEMS.


*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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FDM_INVHISTORY_ITEMS-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDM_INVHISTORY_ITEMS-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FDM_INVHISTORY_ITEMS-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDM_INVHISTORY_ITEMS-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FDM_INVHISTORY_ITEMS-ACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDM_INVHISTORY_ITEMS-ACCOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUGBL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FDM_INVHISTORY_ITEMS-AUGBL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FDM_INVHISTORY_ITEMS-AUGBL.
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_FDM_INVHISTORY_ITEMS_STR, 
DOCFLOW_KEY TYPE STRING,
AMOUNT TYPE STRING,
CURRENCY TYPE STRING,
OPEN_AMOUNT TYPE STRING,
CURR_OPEN_AMOUNT TYPE STRING,
ASSIGNED_AMOUNT TYPE STRING,
CURR_ASS_AMOUNT TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
WRBTR TYPE STRING,
WAERS TYPE STRING,
SHKZG TYPE STRING,
ACCOUNT TYPE STRING,
KOART TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
NETDT TYPE STRING,
SK1DT TYPE STRING,
SK2DT TYPE STRING,
ZBD1P TYPE STRING,
ZBD2P TYPE STRING,
AUGDT TYPE STRING,
AUGBL TYPE STRING,
UMSKS TYPE STRING,
UMSKZ TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
USNAM TYPE STRING,
BKTXT TYPE STRING,
SGTXT TYPE STRING,
BSCHL TYPE STRING,
TBSLT_LTEXT TYPE STRING,
RSTGR TYPE STRING,
T053S_TXT40 TYPE STRING,
ICO_AUGP TYPE STRING,
ICO_DUE TYPE STRING,
HIER TYPE STRING,
NODE TYPE STRING,
STATUS_DOCFLOW TYPE STRING,
STATUS_EBPP TYPE STRING,
XBLNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FDM_INVHISTORY_ITEMS_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_FDM_INVHISTORY_ITEMS_STR-DOCFLOW_KEY sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-AMOUNT sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-CURRENCY sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-OPEN_AMOUNT sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-CURR_OPEN_AMOUNT sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-ASSIGNED_AMOUNT sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-CURR_ASS_AMOUNT sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-BUKRS sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-BELNR sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-GJAHR sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-BUZEI sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-WRBTR sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-WAERS sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-SHKZG sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-ACCOUNT sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-KOART sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-BLDAT sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-BUDAT sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-NETDT sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-SK1DT sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-SK2DT sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-ZBD1P sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-ZBD2P sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-AUGDT sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-AUGBL sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-UMSKS sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-UMSKZ sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-CPUDT sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-CPUTM sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-USNAM sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-BKTXT sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-SGTXT sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-BSCHL sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-TBSLT_LTEXT sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-RSTGR sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-T053S_TXT40 sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-ICO_AUGP sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-ICO_DUE sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-HIER sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-NODE sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-STATUS_DOCFLOW sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-STATUS_EBPP sy-vline 
WA_FDM_INVHISTORY_ITEMS_STR-XBLNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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