ABAP Select data from SAP table FC01ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FC01ITEM 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 FC01ITEM. 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 FC01ITEM 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_FC01ITEM TYPE STANDARD TABLE OF FC01ITEM,
      WA_FC01ITEM TYPE FC01ITEM,
      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: <FC01ITEM> TYPE FC01ITEM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FC01ITEM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FC01ITEM
  INTO TABLE IT_FC01ITEM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FC01ITEM
*  INTO TABLE @DATA(IT_FC01ITEM2).
*--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_FC01ITEM INDEX 1 INTO DATA(WA_FC01ITEM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FC01ITEM ASSIGNING <FC01ITEM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FC01ITEM>-ITCLG = 1.
<FC01ITEM>-ITEM = 1.
<FC01ITEM>-SITEM = 1.
<FC01ITEM>-SITYP = 1.
<FC01ITEM>-TXTSH = 1.

ENDLOOP.

LOOP AT IT_FC01ITEM INTO WA_FC01ITEM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FC01ITEM-ITGRP, sy-vline,
  WA_FC01ITEM-ITHRY, sy-vline,
  WA_FC01ITEM-TXT, sy-vline,
  WA_FC01ITEM-TXTMI, sy-vline,
  WA_FC01ITEM-TEXT, sy-vline,
  WA_FC01ITEM-ITCGY_TXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FC01ITEM 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_FC01ITEM 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_FC01ITEM INTO WA_FC01ITEM.


*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 BFIMC, internal->external for field ITEM
CALL FUNCTION 'CONVERSION_EXIT_BFIMC_OUTPUT'
  EXPORTING
    input =                      WA_FC01ITEM-ITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC01ITEM-ITEM.
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_FC01ITEM_STR, 
ITCLG TYPE STRING,
ITEM TYPE STRING,
SITEM TYPE STRING,
SITYP TYPE STRING,
TXTSH TYPE STRING,
ITGRP TYPE STRING,
ITHRY TYPE STRING,
TXT TYPE STRING,
TXTMI TYPE STRING,
TEXT TYPE STRING,
ITCGY_TXT TYPE STRING,
SIGN_TXT TYPE STRING,
ITUSE_TXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FC01ITEM_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_FC01ITEM_STR-ITCLG sy-vline 
WA_FC01ITEM_STR-ITEM sy-vline 
WA_FC01ITEM_STR-SITEM sy-vline 
WA_FC01ITEM_STR-SITYP sy-vline 
WA_FC01ITEM_STR-TXTSH sy-vline 
WA_FC01ITEM_STR-ITGRP sy-vline 
WA_FC01ITEM_STR-ITHRY sy-vline 
WA_FC01ITEM_STR-TXT sy-vline 
WA_FC01ITEM_STR-TXTMI sy-vline 
WA_FC01ITEM_STR-TEXT sy-vline 
WA_FC01ITEM_STR-ITCGY_TXT sy-vline 
WA_FC01ITEM_STR-SIGN_TXT sy-vline 
WA_FC01ITEM_STR-ITUSE_TXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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