ABAP Select data from SAP table DFKKCRADD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKCRADD
*  INTO TABLE @DATA(IT_DFKKCRADD2).
*--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_DFKKCRADD INDEX 1 INTO DATA(WA_DFKKCRADD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKCRADD>-MANDT = 1.
<DFKKCRADD>-HERKF = 1.
<DFKKCRADD>-ORG1T = 1.
<DFKKCRADD>-ORG1R = 1.
<DFKKCRADD>-HBKID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKCRADD-HKTID, sy-vline,
  WA_DFKKCRADD-ZTART, sy-vline,
  WA_DFKKCRADD-ZTNUM, sy-vline,
  WA_DFKKCRADD-VOIDRS, sy-vline,
  WA_DFKKCRADD-VOIDR, sy-vline,
  WA_DFKKCRADD-VOIDRD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKCRADD 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_DFKKCRADD 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_DFKKCRADD INTO WA_DFKKCRADD.


*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 ZTNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DFKKCRADD-ZTNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKCRADD-ZTNUM.
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_DFKKCRADD_STR, 
MANDT TYPE STRING,
HERKF TYPE STRING,
ORG1T TYPE STRING,
ORG1R TYPE STRING,
HBKID TYPE STRING,
HKTID TYPE STRING,
ZTART TYPE STRING,
ZTNUM TYPE STRING,
VOIDRS TYPE STRING,
VOIDR TYPE STRING,
VOIDRD TYPE STRING,
VOIDRT TYPE STRING,
VOIDK TYPE STRING,
VDDAT TYPE STRING,
VDNAM TYPE STRING,
AUNAM TYPE STRING,
AUORT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKCRADD_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_DFKKCRADD_STR-MANDT sy-vline 
WA_DFKKCRADD_STR-HERKF sy-vline 
WA_DFKKCRADD_STR-ORG1T sy-vline 
WA_DFKKCRADD_STR-ORG1R sy-vline 
WA_DFKKCRADD_STR-HBKID sy-vline 
WA_DFKKCRADD_STR-HKTID sy-vline 
WA_DFKKCRADD_STR-ZTART sy-vline 
WA_DFKKCRADD_STR-ZTNUM sy-vline 
WA_DFKKCRADD_STR-VOIDRS sy-vline 
WA_DFKKCRADD_STR-VOIDR sy-vline 
WA_DFKKCRADD_STR-VOIDRD sy-vline 
WA_DFKKCRADD_STR-VOIDRT sy-vline 
WA_DFKKCRADD_STR-VOIDK sy-vline 
WA_DFKKCRADD_STR-VDDAT sy-vline 
WA_DFKKCRADD_STR-VDNAM sy-vline 
WA_DFKKCRADD_STR-AUNAM sy-vline 
WA_DFKKCRADD_STR-AUORT sy-vline      INTO ld_text SEPARATED BY SPACE.

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