ABAP Select data from SAP table FCOMT_INASET into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FCOMT_INASET
*  INTO TABLE @DATA(IT_FCOMT_INASET2).
*--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_FCOMT_INASET INDEX 1 INTO DATA(WA_FCOMT_INASET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FCOMT_INASET>-MANDT = 1.
<FCOMT_INASET>-SETCLASS = 1.
<FCOMT_INASET>-SUBCLASS = 1.
<FCOMT_INASET>-SETNAME = 1.
<FCOMT_INASET>-VERSIONID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FCOMT_INASET-ACTIVATIONFLG, sy-vline,
  WA_FCOMT_INASET-CREATIONTMPS, sy-vline,
  WA_FCOMT_INASET-CREATEDBY, sy-vline,
  WA_FCOMT_INASET-LASTCHGTMPS, sy-vline,
  WA_FCOMT_INASET-LASTCHGBY, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_FCOMT_INASET 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_FCOMT_INASET 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_FCOMT_INASET INTO WA_FCOMT_INASET.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FCOMT_INASET_STR, 
MANDT TYPE STRING,
SETCLASS TYPE STRING,
SUBCLASS TYPE STRING,
SETNAME TYPE STRING,
VERSIONID TYPE STRING,
ACTIVATIONFLG TYPE STRING,
CREATIONTMPS TYPE STRING,
CREATEDBY TYPE STRING,
LASTCHGTMPS TYPE STRING,
LASTCHGBY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FCOMT_INASET_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_FCOMT_INASET_STR-MANDT sy-vline 
WA_FCOMT_INASET_STR-SETCLASS sy-vline 
WA_FCOMT_INASET_STR-SUBCLASS sy-vline 
WA_FCOMT_INASET_STR-SETNAME sy-vline 
WA_FCOMT_INASET_STR-VERSIONID sy-vline 
WA_FCOMT_INASET_STR-ACTIVATIONFLG sy-vline 
WA_FCOMT_INASET_STR-CREATIONTMPS sy-vline 
WA_FCOMT_INASET_STR-CREATEDBY sy-vline 
WA_FCOMT_INASET_STR-LASTCHGTMPS sy-vline 
WA_FCOMT_INASET_STR-LASTCHGBY sy-vline      INTO ld_text SEPARATED BY SPACE.

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