ABAP Select data from SAP table FUCN_FIDOC_EXCEL_STRUCTURE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FUCN_FIDOC_EXCEL_STRUCTURE
*  INTO TABLE @DATA(IT_FUCN_FIDOC_EXCEL_STRUCTURE2).
*--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_FUCN_FIDOC_EXCEL_STRUCTURE INDEX 1 INTO DATA(WA_FUCN_FIDOC_EXCEL_STRUCTURE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FUCN_FIDOC_EXCEL_STRUCTURE>-BUKRS = 1.
<FUCN_FIDOC_EXCEL_STRUCTURE>-BLART = 1.
<FUCN_FIDOC_EXCEL_STRUCTURE>-BUDAT = 1.
<FUCN_FIDOC_EXCEL_STRUCTURE>-BLDAT = 1.
<FUCN_FIDOC_EXCEL_STRUCTURE>-BKTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FUCN_FIDOC_EXCEL_STRUCTURE-XBLNR, sy-vline,
  WA_FUCN_FIDOC_EXCEL_STRUCTURE-XMWST, sy-vline,
  WA_FUCN_FIDOC_EXCEL_STRUCTURE-SGTXT, sy-vline,
  WA_FUCN_FIDOC_EXCEL_STRUCTURE-NEWBS, sy-vline,
  WA_FUCN_FIDOC_EXCEL_STRUCTURE-NEWKO, sy-vline,
  WA_FUCN_FIDOC_EXCEL_STRUCTURE-NEWBW, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FUCN_FIDOC_EXCEL_STRUCTURE 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_FUCN_FIDOC_EXCEL_STRUCTURE 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_FUCN_FIDOC_EXCEL_STRUCTURE INTO WA_FUCN_FIDOC_EXCEL_STRUCTURE.


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

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

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

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

*Conversion exit AU132, internal->external for field WRBTR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_FUCN_FIDOC_EXCEL_STRUCTURE-WRBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FUCN_FIDOC_EXCEL_STRUCTURE-WRBTR.
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_FUCN_FIDOC_EXCEL_STRUCTURE_STR, 
BUKRS TYPE STRING,
BLART TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
BKTXT TYPE STRING,
XBLNR TYPE STRING,
XMWST TYPE STRING,
SGTXT TYPE STRING,
NEWBS TYPE STRING,
NEWKO TYPE STRING,
NEWBW TYPE STRING,
MWSKZ TYPE STRING,
KOSTL TYPE STRING,
AUFNR TYPE STRING,
GSBER TYPE STRING,
ZUONR TYPE STRING,
PRCTR TYPE STRING,
WAERS TYPE STRING,
WRBTR TYPE STRING,
INDEX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FUCN_FIDOC_EXCEL_STRUCTURE_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_FUCN_FIDOC_EXCEL_STRUCTURE_STR-BUKRS sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-BLART sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-BUDAT sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-BLDAT sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-BKTXT sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-XBLNR sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-XMWST sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-SGTXT sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-NEWBS sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-NEWKO sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-NEWBW sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-MWSKZ sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-KOSTL sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-AUFNR sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-GSBER sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-ZUONR sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-PRCTR sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-WAERS sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-WRBTR sy-vline 
WA_FUCN_FIDOC_EXCEL_STRUCTURE_STR-INDEX sy-vline      INTO ld_text SEPARATED BY SPACE.

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