ABAP Select data from SAP table DFKKCJT_WDRWH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DFKKCJT_WDRWH 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_WDRWH. 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_WDRWH 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_WDRWH TYPE STANDARD TABLE OF DFKKCJT_WDRWH,
      WA_DFKKCJT_WDRWH TYPE DFKKCJT_WDRWH,
      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_WDRWH> TYPE DFKKCJT_WDRWH.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKCJT_WDRWH
*  INTO TABLE @DATA(IT_DFKKCJT_WDRWH2).
*--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_WDRWH INDEX 1 INTO DATA(WA_DFKKCJT_WDRWH2).


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

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

ENDLOOP.

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

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


*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_DFKKCJT_WDRWH_STR, 
MANDT TYPE STRING,
OFFIC TYPE STRING,
CHDSK TYPE STRING,
CPUDT TYPE STRING,
SEQNO TYPE STRING,
OPBEL_CJ TYPE STRING,
WAERS TYPE STRING,
BETRW TYPE STRING,
PAYTP TYPE STRING,
PRCTP TYPE STRING,
PRKEY TYPE STRING,
WDBTR TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKCJT_WDRWH_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_WDRWH_STR-MANDT sy-vline 
WA_DFKKCJT_WDRWH_STR-OFFIC sy-vline 
WA_DFKKCJT_WDRWH_STR-CHDSK sy-vline 
WA_DFKKCJT_WDRWH_STR-CPUDT sy-vline 
WA_DFKKCJT_WDRWH_STR-SEQNO sy-vline 
WA_DFKKCJT_WDRWH_STR-OPBEL_CJ sy-vline 
WA_DFKKCJT_WDRWH_STR-WAERS sy-vline 
WA_DFKKCJT_WDRWH_STR-BETRW sy-vline 
WA_DFKKCJT_WDRWH_STR-PAYTP sy-vline 
WA_DFKKCJT_WDRWH_STR-PRCTP sy-vline 
WA_DFKKCJT_WDRWH_STR-PRKEY sy-vline 
WA_DFKKCJT_WDRWH_STR-WDBTR sy-vline 
WA_DFKKCJT_WDRWH_STR-ERNAM sy-vline 
WA_DFKKCJT_WDRWH_STR-ERDAT sy-vline 
WA_DFKKCJT_WDRWH_STR-ERTIM sy-vline      INTO ld_text SEPARATED BY SPACE.

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