ABAP Select data from SAP table DFKKCJC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKCJC
*  INTO TABLE @DATA(IT_DFKKCJC2).
*--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_DFKKCJC INDEX 1 INTO DATA(WA_DFKKCJC2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKCJC-WAERS, sy-vline,
  WA_DFKKCJC-PAYTP, sy-vline,
  WA_DFKKCJC-BLDAT, sy-vline,
  WA_DFKKCJC-BLSEQ, sy-vline,
  WA_DFKKCJC-CDSTA, sy-vline,
  WA_DFKKCJC-CPUTM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKCJC 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_DFKKCJC 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_DFKKCJC INTO WA_DFKKCJC.


*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_DFKKCJC_STR, 
MANDT TYPE STRING,
OFFIC TYPE STRING,
CHDSK TYPE STRING,
SEQNO TYPE STRING,
CPUDT TYPE STRING,
WAERS TYPE STRING,
PAYTP TYPE STRING,
BLDAT TYPE STRING,
BLSEQ TYPE STRING,
CDSTA TYPE STRING,
CPUTM TYPE STRING,
ERNAM TYPE STRING,
STAMT TYPE STRING,
SDAMT TYPE STRING,
POAMT TYPE STRING,
PDAMT TYPE STRING,
CSAMT TYPE STRING,
DIAMT TYPE STRING,
DEAMT TYPE STRING,
WIAMT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKCJC_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_DFKKCJC_STR-MANDT sy-vline 
WA_DFKKCJC_STR-OFFIC sy-vline 
WA_DFKKCJC_STR-CHDSK sy-vline 
WA_DFKKCJC_STR-SEQNO sy-vline 
WA_DFKKCJC_STR-CPUDT sy-vline 
WA_DFKKCJC_STR-WAERS sy-vline 
WA_DFKKCJC_STR-PAYTP sy-vline 
WA_DFKKCJC_STR-BLDAT sy-vline 
WA_DFKKCJC_STR-BLSEQ sy-vline 
WA_DFKKCJC_STR-CDSTA sy-vline 
WA_DFKKCJC_STR-CPUTM sy-vline 
WA_DFKKCJC_STR-ERNAM sy-vline 
WA_DFKKCJC_STR-STAMT sy-vline 
WA_DFKKCJC_STR-SDAMT sy-vline 
WA_DFKKCJC_STR-POAMT sy-vline 
WA_DFKKCJC_STR-PDAMT sy-vline 
WA_DFKKCJC_STR-CSAMT sy-vline 
WA_DFKKCJC_STR-DIAMT sy-vline 
WA_DFKKCJC_STR-DEAMT sy-vline 
WA_DFKKCJC_STR-WIAMT sy-vline      INTO ld_text SEPARATED BY SPACE.

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