ABAP Select data from SAP table AFWGO_CONTROL_FLAT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM AFWGO_CONTROL_FLAT
*  INTO TABLE @DATA(IT_AFWGO_CONTROL_FLAT2).
*--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_AFWGO_CONTROL_FLAT INDEX 1 INTO DATA(WA_AFWGO_CONTROL_FLAT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<AFWGO_CONTROL_FLAT>-APPLICATION = 1.
<AFWGO_CONTROL_FLAT>-MODUS1 = 1.
<AFWGO_CONTROL_FLAT>-INTMODUS = 1.
<AFWGO_CONTROL_FLAT>-EVALPROC1 = 1.
<AFWGO_CONTROL_FLAT>-FLID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_AFWGO_CONTROL_FLAT-DATASTR, sy-vline,
  WA_AFWGO_CONTROL_FLAT-SICHTID, sy-vline,
  WA_AFWGO_CONTROL_FLAT-AUSWT, sy-vline,
  WA_AFWGO_CONTROL_FLAT-STATUS1, sy-vline,
  WA_AFWGO_CONTROL_FLAT-AUSWTYP, sy-vline,
  WA_AFWGO_CONTROL_FLAT-FLG_SIMRUN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_AFWGO_CONTROL_FLAT 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_AFWGO_CONTROL_FLAT 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_AFWGO_CONTROL_FLAT INTO WA_AFWGO_CONTROL_FLAT.


*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 1CEP1, internal->external for field EVALPROC1
CALL FUNCTION 'CONVERSION_EXIT_1CEP1_OUTPUT'
  EXPORTING
    input =                      WA_AFWGO_CONTROL_FLAT-EVALPROC1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFWGO_CONTROL_FLAT-EVALPROC1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STATEID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_AFWGO_CONTROL_FLAT-STATEID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_AFWGO_CONTROL_FLAT-STATEID.
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_AFWGO_CONTROL_FLAT_STR, 
APPLICATION TYPE STRING,
MODUS1 TYPE STRING,
INTMODUS TYPE STRING,
EVALPROC1 TYPE STRING,
FLID TYPE STRING,
DATASTR TYPE STRING,
SICHTID TYPE STRING,
AUSWT TYPE STRING,
STATUS1 TYPE STRING,
AUSWTYP TYPE STRING,
FLG_SIMRUN TYPE STRING,
FLG_MTASK TYPE STRING,
FLG_MAN_FOB_SEL TYPE STRING,
FLG_SAP_SERVICE TYPE STRING,
FLG_FLID_TEST TYPE STRING,
STATEID TYPE STRING,
FLG_EOD_PROCESS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_AFWGO_CONTROL_FLAT_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_AFWGO_CONTROL_FLAT_STR-APPLICATION sy-vline 
WA_AFWGO_CONTROL_FLAT_STR-MODUS1 sy-vline 
WA_AFWGO_CONTROL_FLAT_STR-INTMODUS sy-vline 
WA_AFWGO_CONTROL_FLAT_STR-EVALPROC1 sy-vline 
WA_AFWGO_CONTROL_FLAT_STR-FLID sy-vline 
WA_AFWGO_CONTROL_FLAT_STR-DATASTR sy-vline 
WA_AFWGO_CONTROL_FLAT_STR-SICHTID sy-vline 
WA_AFWGO_CONTROL_FLAT_STR-AUSWT sy-vline 
WA_AFWGO_CONTROL_FLAT_STR-STATUS1 sy-vline 
WA_AFWGO_CONTROL_FLAT_STR-AUSWTYP sy-vline 
WA_AFWGO_CONTROL_FLAT_STR-FLG_SIMRUN sy-vline 
WA_AFWGO_CONTROL_FLAT_STR-FLG_MTASK sy-vline 
WA_AFWGO_CONTROL_FLAT_STR-FLG_MAN_FOB_SEL sy-vline 
WA_AFWGO_CONTROL_FLAT_STR-FLG_SAP_SERVICE sy-vline 
WA_AFWGO_CONTROL_FLAT_STR-FLG_FLID_TEST sy-vline 
WA_AFWGO_CONTROL_FLAT_STR-STATEID sy-vline 
WA_AFWGO_CONTROL_FLAT_STR-FLG_EOD_PROCESS sy-vline      INTO ld_text SEPARATED BY SPACE.

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