ABAP Select data from SAP table DFKKCFZST into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFKKCFZST
*  INTO TABLE @DATA(IT_DFKKCFZST2).
*--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_DFKKCFZST INDEX 1 INTO DATA(WA_DFKKCFZST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFKKCFZST>-MANDT = 1.
<DFKKCFZST>-KEYZ1 = 1.
<DFKKCFZST>-POSZA = 1.
<DFKKCFZST>-SELT1 = 1.
<DFKKCFZST>-SELW1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFKKCFZST-SELT2, sy-vline,
  WA_DFKKCFZST-SELW2, sy-vline,
  WA_DFKKCFZST-SELT3, sy-vline,
  WA_DFKKCFZST-SELW3, sy-vline,
  WA_DFKKCFZST-WAERS, sy-vline,
  WA_DFKKCFZST-BETRZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFKKCFZST 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_DFKKCFZST 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_DFKKCFZST INTO WA_DFKKCFZST.


*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_DFKKCFZST-BVRKO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFKKCFZST-BVRKO.
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_DFKKCFZST_STR, 
MANDT TYPE STRING,
KEYZ1 TYPE STRING,
POSZA TYPE STRING,
SELT1 TYPE STRING,
SELW1 TYPE STRING,
SELT2 TYPE STRING,
SELW2 TYPE STRING,
SELT3 TYPE STRING,
SELW3 TYPE STRING,
WAERS TYPE STRING,
BETRZ TYPE STRING,
BVRKO TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
BUDAT TYPE STRING,
TXTVW TYPE STRING,
STATE TYPE STRING,
LOCK_USER TYPE STRING,
LOCK_LIMIT TYPE STRING,
WORKSTATE TYPE STRING,
RESUBMIT_DATE TYPE STRING,
WF_COUNT TYPE STRING,
ML_STATUS TYPE STRING,
XML_CLEARED TYPE STRING,
KEYPP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFKKCFZST_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_DFKKCFZST_STR-MANDT sy-vline 
WA_DFKKCFZST_STR-KEYZ1 sy-vline 
WA_DFKKCFZST_STR-POSZA sy-vline 
WA_DFKKCFZST_STR-SELT1 sy-vline 
WA_DFKKCFZST_STR-SELW1 sy-vline 
WA_DFKKCFZST_STR-SELT2 sy-vline 
WA_DFKKCFZST_STR-SELW2 sy-vline 
WA_DFKKCFZST_STR-SELT3 sy-vline 
WA_DFKKCFZST_STR-SELW3 sy-vline 
WA_DFKKCFZST_STR-WAERS sy-vline 
WA_DFKKCFZST_STR-BETRZ sy-vline 
WA_DFKKCFZST_STR-BVRKO sy-vline 
WA_DFKKCFZST_STR-BUKRS sy-vline 
WA_DFKKCFZST_STR-GSBER sy-vline 
WA_DFKKCFZST_STR-BUDAT sy-vline 
WA_DFKKCFZST_STR-TXTVW sy-vline 
WA_DFKKCFZST_STR-STATE sy-vline 
WA_DFKKCFZST_STR-LOCK_USER sy-vline 
WA_DFKKCFZST_STR-LOCK_LIMIT sy-vline 
WA_DFKKCFZST_STR-WORKSTATE sy-vline 
WA_DFKKCFZST_STR-RESUBMIT_DATE sy-vline 
WA_DFKKCFZST_STR-WF_COUNT sy-vline 
WA_DFKKCFZST_STR-ML_STATUS sy-vline 
WA_DFKKCFZST_STR-XML_CLEARED sy-vline 
WA_DFKKCFZST_STR-KEYPP sy-vline      INTO ld_text SEPARATED BY SPACE.

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