ABAP Select data from SAP table FKKVK_ACCOUNT_TYPE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKVK_ACCOUNT_TYPE
*  INTO TABLE @DATA(IT_FKKVK_ACCOUNT_TYPE2).
*--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_FKKVK_ACCOUNT_TYPE INDEX 1 INTO DATA(WA_FKKVK_ACCOUNT_TYPE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKVK_ACCOUNT_TYPE>-FKKVK = 1.
<FKKVK_ACCOUNT_TYPE>-MANDT = 1.
<FKKVK_ACCOUNT_TYPE>-VKONT = 1.
<FKKVK_ACCOUNT_TYPE>-ERDAT = 1.
<FKKVK_ACCOUNT_TYPE>-ERNAM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKVK_ACCOUNT_TYPE-LOEVM, sy-vline,
  WA_FKKVK_ACCOUNT_TYPE-AEDAT, sy-vline,
  WA_FKKVK_ACCOUNT_TYPE-AENAM, sy-vline,
  WA_FKKVK_ACCOUNT_TYPE-APPLK, sy-vline,
  WA_FKKVK_ACCOUNT_TYPE-VKTYP, sy-vline,
  WA_FKKVK_ACCOUNT_TYPE-VKONA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKVK_ACCOUNT_TYPE 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_FKKVK_ACCOUNT_TYPE 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_FKKVK_ACCOUNT_TYPE INTO WA_FKKVK_ACCOUNT_TYPE.


*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 ALPHA, internal->external for field VKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKVK_ACCOUNT_TYPE-VKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKVK_ACCOUNT_TYPE-VKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACTV_PCHNGNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKVK_ACCOUNT_TYPE-ACTV_PCHNGNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKVK_ACCOUNT_TYPE-ACTV_PCHNGNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PCHNGNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKVK_ACCOUNT_TYPE-PCHNGNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKVK_ACCOUNT_TYPE-PCHNGNR.
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_FKKVK_ACCOUNT_TYPE_STR, 
FKKVK TYPE STRING,
MANDT TYPE STRING,
VKONT TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
LOEVM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
APPLK TYPE STRING,
VKTYP TYPE STRING,
VKONA TYPE STRING,
VKBEZ TYPE STRING,
FKKVKP TYPE STRING,
FKTAXEX TYPE STRING,
STAT TYPE STRING,
AKTDB TYPE STRING,
AKTYP TYPE STRING,
XCHNG TYPE STRING,
NRRNG TYPE STRING,
XNREX TYPE STRING,
VALDT TYPE STRING,
ACTV_PCHNGNR TYPE STRING,
PCDHDR_T TYPE STRING,
X_ITEMS_ENQ TYPE STRING,
XCHDOC TYPE STRING,
XSAVED TYPE STRING,
PCHNGNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKVK_ACCOUNT_TYPE_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_FKKVK_ACCOUNT_TYPE_STR-FKKVK sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-MANDT sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-VKONT sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-ERDAT sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-ERNAM sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-LOEVM sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-AEDAT sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-AENAM sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-APPLK sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-VKTYP sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-VKONA sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-VKBEZ sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-FKKVKP sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-FKTAXEX sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-STAT sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-AKTDB sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-AKTYP sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-XCHNG sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-NRRNG sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-XNREX sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-VALDT sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-ACTV_PCHNGNR sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-PCDHDR_T sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-X_ITEMS_ENQ sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-XCHDOC sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-XSAVED sy-vline 
WA_FKKVK_ACCOUNT_TYPE_STR-PCHNGNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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