ABAP Select data from SAP table FCOMS_STATUS_CHANGE_DOCUMENT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FCOMS_STATUS_CHANGE_DOCUMENT
*  INTO TABLE @DATA(IT_FCOMS_STATUS_CHANGE_DOCUMENT2).
*--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_FCOMS_STATUS_CHANGE_DOCUMENT INDEX 1 INTO DATA(WA_FCOMS_STATUS_CHANGE_DOCUMENT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FCOMS_STATUS_CHANGE_DOCUMENT>-MANDT = 1.
<FCOMS_STATUS_CHANGE_DOCUMENT>-OBJNR = 1.
<FCOMS_STATUS_CHANGE_DOCUMENT>-STAT = 1.
<FCOMS_STATUS_CHANGE_DOCUMENT>-CHGNR = 1.
<FCOMS_STATUS_CHANGE_DOCUMENT>-USNAM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FCOMS_STATUS_CHANGE_DOCUMENT-UDATE, sy-vline,
  WA_FCOMS_STATUS_CHANGE_DOCUMENT-UTIME, sy-vline,
  WA_FCOMS_STATUS_CHANGE_DOCUMENT-TCODE, sy-vline,
  WA_FCOMS_STATUS_CHANGE_DOCUMENT-CDTCODE, sy-vline,
  WA_FCOMS_STATUS_CHANGE_DOCUMENT-INACT, sy-vline,
  WA_FCOMS_STATUS_CHANGE_DOCUMENT-CHIND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FCOMS_STATUS_CHANGE_DOCUMENT 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_FCOMS_STATUS_CHANGE_DOCUMENT 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_FCOMS_STATUS_CHANGE_DOCUMENT INTO WA_FCOMS_STATUS_CHANGE_DOCUMENT.


*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_FCOMS_STATUS_CHANGE_DOCUMENT_STR, 
MANDT TYPE STRING,
OBJNR TYPE STRING,
STAT TYPE STRING,
CHGNR TYPE STRING,
USNAM TYPE STRING,
UDATE TYPE STRING,
UTIME TYPE STRING,
TCODE TYPE STRING,
CDTCODE TYPE STRING,
INACT TYPE STRING,
CHIND TYPE STRING,
_DATAAGING TYPE STRING,
STATUS_TYPE_TXT TYPE STRING,
ACTION_TXT TYPE STRING,
STATUS_SHORT_TXT TYPE STRING,
STATUS_TXT TYPE STRING,
TRANSACTION_TXT TYPE STRING,
UFULLNAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FCOMS_STATUS_CHANGE_DOCUMENT_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_FCOMS_STATUS_CHANGE_DOCUMENT_STR-MANDT sy-vline 
WA_FCOMS_STATUS_CHANGE_DOCUMENT_STR-OBJNR sy-vline 
WA_FCOMS_STATUS_CHANGE_DOCUMENT_STR-STAT sy-vline 
WA_FCOMS_STATUS_CHANGE_DOCUMENT_STR-CHGNR sy-vline 
WA_FCOMS_STATUS_CHANGE_DOCUMENT_STR-USNAM sy-vline 
WA_FCOMS_STATUS_CHANGE_DOCUMENT_STR-UDATE sy-vline 
WA_FCOMS_STATUS_CHANGE_DOCUMENT_STR-UTIME sy-vline 
WA_FCOMS_STATUS_CHANGE_DOCUMENT_STR-TCODE sy-vline 
WA_FCOMS_STATUS_CHANGE_DOCUMENT_STR-CDTCODE sy-vline 
WA_FCOMS_STATUS_CHANGE_DOCUMENT_STR-INACT sy-vline 
WA_FCOMS_STATUS_CHANGE_DOCUMENT_STR-CHIND sy-vline 
WA_FCOMS_STATUS_CHANGE_DOCUMENT_STR-_DATAAGING sy-vline 
WA_FCOMS_STATUS_CHANGE_DOCUMENT_STR-STATUS_TYPE_TXT sy-vline 
WA_FCOMS_STATUS_CHANGE_DOCUMENT_STR-ACTION_TXT sy-vline 
WA_FCOMS_STATUS_CHANGE_DOCUMENT_STR-STATUS_SHORT_TXT sy-vline 
WA_FCOMS_STATUS_CHANGE_DOCUMENT_STR-STATUS_TXT sy-vline 
WA_FCOMS_STATUS_CHANGE_DOCUMENT_STR-TRANSACTION_TXT sy-vline 
WA_FCOMS_STATUS_CHANGE_DOCUMENT_STR-UFULLNAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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