ABAP Select data from SAP table GFC_STATUS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GFC_STATUS
*  INTO TABLE @DATA(IT_GFC_STATUS2).
*--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_GFC_STATUS INDEX 1 INTO DATA(WA_GFC_STATUS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GFC_STATUS>-ACTIVITY = 1.
<GFC_STATUS>-MODUS = 1.
<GFC_STATUS>-SAVED = 1.
<GFC_STATUS>-NEXT_PREV = 1.
<GFC_STATUS>-SHOWVERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GFC_STATUS-CUSTOMIZE, sy-vline,
  WA_GFC_STATUS-EXTEND, sy-vline,
  WA_GFC_STATUS-EXTENDED, sy-vline,
  WA_GFC_STATUS-GENERATED, sy-vline,
  WA_GFC_STATUS-ACTIVE, sy-vline,
  WA_GFC_STATUS-WB99, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GFC_STATUS 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_GFC_STATUS 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_GFC_STATUS INTO WA_GFC_STATUS.


*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_GFC_STATUS_STR, 
ACTIVITY TYPE STRING,
MODUS TYPE STRING,
SAVED TYPE STRING,
NEXT_PREV TYPE STRING,
SHOWVERS TYPE STRING,
CUSTOMIZE TYPE STRING,
EXTEND TYPE STRING,
EXTENDED TYPE STRING,
GENERATED TYPE STRING,
ACTIVE TYPE STRING,
WB99 TYPE STRING,
ACTIVE_WD TYPE STRING,
FIELD_IND TYPE STRING,
MESS_CODE TYPE STRING,
MESS_TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GFC_STATUS_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_GFC_STATUS_STR-ACTIVITY sy-vline 
WA_GFC_STATUS_STR-MODUS sy-vline 
WA_GFC_STATUS_STR-SAVED sy-vline 
WA_GFC_STATUS_STR-NEXT_PREV sy-vline 
WA_GFC_STATUS_STR-SHOWVERS sy-vline 
WA_GFC_STATUS_STR-CUSTOMIZE sy-vline 
WA_GFC_STATUS_STR-EXTEND sy-vline 
WA_GFC_STATUS_STR-EXTENDED sy-vline 
WA_GFC_STATUS_STR-GENERATED sy-vline 
WA_GFC_STATUS_STR-ACTIVE sy-vline 
WA_GFC_STATUS_STR-WB99 sy-vline 
WA_GFC_STATUS_STR-ACTIVE_WD sy-vline 
WA_GFC_STATUS_STR-FIELD_IND sy-vline 
WA_GFC_STATUS_STR-MESS_CODE sy-vline 
WA_GFC_STATUS_STR-MESS_TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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