ABAP Select data from SAP table FKK_VT_I_CHANGE_FLAGS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_VT_I_CHANGE_FLAGS
*  INTO TABLE @DATA(IT_FKK_VT_I_CHANGE_FLAGS2).
*--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_FKK_VT_I_CHANGE_FLAGS INDEX 1 INTO DATA(WA_FKK_VT_I_CHANGE_FLAGS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_VT_I_CHANGE_FLAGS>-VALTO_CTRTERM = 1.
<FKK_VT_I_CHANGE_FLAGS>-CHRSN = 1.
<FKK_VT_I_CHANGE_FLAGS>-RA_REFTYPE = 1.
<FKK_VT_I_CHANGE_FLAGS>-RA_REFID = 1.
<FKK_VT_I_CHANGE_FLAGS>-TRPRC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_VT_I_CHANGE_FLAGS-TRPRC_CURR, sy-vline,
  WA_FKK_VT_I_CHANGE_FLAGS-TRPRC_FREQ_UNIT, sy-vline,
  WA_FKK_VT_I_CHANGE_FLAGS-TRPRC_FREQ_DURATION, sy-vline,
  WA_FKK_VT_I_CHANGE_FLAGS-SSPRC, sy-vline,
  WA_FKK_VT_I_CHANGE_FLAGS-SSPRC_CURR, sy-vline,
  WA_FKK_VT_I_CHANGE_FLAGS-SSPRC_FREQ_UNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_VT_I_CHANGE_FLAGS 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_FKK_VT_I_CHANGE_FLAGS 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_FKK_VT_I_CHANGE_FLAGS INTO WA_FKK_VT_I_CHANGE_FLAGS.


*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_FKK_VT_I_CHANGE_FLAGS_STR, 
VALTO_CTRTERM TYPE STRING,
CHRSN TYPE STRING,
RA_REFTYPE TYPE STRING,
RA_REFID TYPE STRING,
TRPRC TYPE STRING,
TRPRC_CURR TYPE STRING,
TRPRC_FREQ_UNIT TYPE STRING,
TRPRC_FREQ_DURATION TYPE STRING,
SSPRC TYPE STRING,
SSPRC_CURR TYPE STRING,
SSPRC_FREQ_UNIT TYPE STRING,
SSPRC_FREQ_DURATION TYPE STRING,
TRPRC_TOTAL TYPE STRING,
SSPRC_TOTAL TYPE STRING,
PAY_PAR_ACTIVE TYPE STRING,
ZAHLKOND TYPE STRING,
EZAWE TYPE STRING,
ABWRE TYPE STRING,
ADRRE TYPE STRING,
EBVTY TYPE STRING,
MNDID TYPE STRING,
CCARD_ID TYPE STRING,
AZAWE TYPE STRING,
ABWRA TYPE STRING,
ADRRA TYPE STRING,
ABVTY TYPE STRING,
CCARD_OUT TYPE STRING,
DUNN_PAR_ACTIVE TYPE STRING,
MAHNV TYPE STRING,
XDISCOEXEMPT TYPE STRING,
QUANTITY TYPE STRING,
QUANTITY_UNIT TYPE STRING,
VALFROM_CTRTERM TYPE STRING,
RECURR_SERVICE_TYPE TYPE STRING,
CUOBJ TYPE STRING,
BSTKD TYPE STRING,
BSTDK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_VT_I_CHANGE_FLAGS_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_FKK_VT_I_CHANGE_FLAGS_STR-VALTO_CTRTERM sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-CHRSN sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-RA_REFTYPE sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-RA_REFID sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-TRPRC sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-TRPRC_CURR sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-TRPRC_FREQ_UNIT sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-TRPRC_FREQ_DURATION sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-SSPRC sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-SSPRC_CURR sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-SSPRC_FREQ_UNIT sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-SSPRC_FREQ_DURATION sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-TRPRC_TOTAL sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-SSPRC_TOTAL sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-PAY_PAR_ACTIVE sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-ZAHLKOND sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-EZAWE sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-ABWRE sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-ADRRE sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-EBVTY sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-MNDID sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-CCARD_ID sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-AZAWE sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-ABWRA sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-ADRRA sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-ABVTY sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-CCARD_OUT sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-DUNN_PAR_ACTIVE sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-MAHNV sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-XDISCOEXEMPT sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-QUANTITY sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-QUANTITY_UNIT sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-VALFROM_CTRTERM sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-RECURR_SERVICE_TYPE sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-CUOBJ sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-BSTKD sy-vline 
WA_FKK_VT_I_CHANGE_FLAGS_STR-BSTDK sy-vline      INTO ld_text SEPARATED BY SPACE.

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