ABAP Select data from SAP table DFKKCJT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKCJT
*  INTO TABLE @DATA(IT_DFKKCJT2).
*--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_DFKKCJT INDEX 1 INTO DATA(WA_DFKKCJT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKCJT>-MANDT = 1.
<DFKKCJT>-OFFIC = 1.
<DFKKCJT>-CHDSK = 1.
<DFKKCJT>-CPUDT = 1.
<DFKKCJT>-SEQNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKCJT-WAERS, sy-vline,
  WA_DFKKCJT-BETRW, sy-vline,
  WA_DFKKCJT-PAYTP, sy-vline,
  WA_DFKKCJT-PRCTP, sy-vline,
  WA_DFKKCJT-PRKEY, sy-vline,
  WA_DFKKCJT-ERNAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKCJT 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_DFKKCJT 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_DFKKCJT INTO WA_DFKKCJT.


*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 BVRKO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKCJT-BVRKO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKCJT-BVRKO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STORB
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKCJT-STORB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKCJT-STORB.
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_DFKKCJT_STR, 
MANDT TYPE STRING,
OFFIC TYPE STRING,
CHDSK TYPE STRING,
CPUDT TYPE STRING,
SEQNO TYPE STRING,
WAERS TYPE STRING,
BETRW TYPE STRING,
PAYTP TYPE STRING,
PRCTP TYPE STRING,
PRKEY TYPE STRING,
ERNAM TYPE STRING,
CPUTM TYPE STRING,
KEYZ1 TYPE STRING,
TKNGS TYPE STRING,
FSZT TYPE STRING,
BVRKO TYPE STRING,
STORB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKCJT_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_DFKKCJT_STR-MANDT sy-vline 
WA_DFKKCJT_STR-OFFIC sy-vline 
WA_DFKKCJT_STR-CHDSK sy-vline 
WA_DFKKCJT_STR-CPUDT sy-vline 
WA_DFKKCJT_STR-SEQNO sy-vline 
WA_DFKKCJT_STR-WAERS sy-vline 
WA_DFKKCJT_STR-BETRW sy-vline 
WA_DFKKCJT_STR-PAYTP sy-vline 
WA_DFKKCJT_STR-PRCTP sy-vline 
WA_DFKKCJT_STR-PRKEY sy-vline 
WA_DFKKCJT_STR-ERNAM sy-vline 
WA_DFKKCJT_STR-CPUTM sy-vline 
WA_DFKKCJT_STR-KEYZ1 sy-vline 
WA_DFKKCJT_STR-TKNGS sy-vline 
WA_DFKKCJT_STR-FSZT sy-vline 
WA_DFKKCJT_STR-BVRKO sy-vline 
WA_DFKKCJT_STR-STORB sy-vline      INTO ld_text SEPARATED BY SPACE.

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