ABAP Select data from SAP table /ATL/KPFI00003KP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ATL/KPFI00003KP 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 /ATL/KPFI00003KP. 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 /ATL/KPFI00003KP 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_/ATL/KPFI00003KP TYPE STANDARD TABLE OF /ATL/KPFI00003KP,
      WA_/ATL/KPFI00003KP TYPE /ATL/KPFI00003KP,
      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: </ATL/KPFI00003KP> TYPE /ATL/KPFI00003KP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/ATL/KPFI00003KP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ATL/KPFI00003KP
  INTO TABLE IT_/ATL/KPFI00003KP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ATL/KPFI00003KP
*  INTO TABLE @DATA(IT_/ATL/KPFI00003KP2).
*--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_/ATL/KPFI00003KP INDEX 1 INTO DATA(WA_/ATL/KPFI00003KP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ATL/KPFI00003KP ASSIGNING </ATL/KPFI00003KP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ATL/KPFI00003KP>-MANDT = 1.
</ATL/KPFI00003KP>-BANKS = 1.
</ATL/KPFI00003KP>-ZBANK_NO = 1.
</ATL/KPFI00003KP>-ZBRANCHE = 1.
</ATL/KPFI00003KP>-ZACCT = 1.

ENDLOOP.

LOOP AT IT_/ATL/KPFI00003KP INTO WA_/ATL/KPFI00003KP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ATL/KPFI00003KP-ZCHEQUE_NO, sy-vline,
  WA_/ATL/KPFI00003KP-ZCOUNT, sy-vline,
  WA_/ATL/KPFI00003KP-BUKRS, sy-vline,
  WA_/ATL/KPFI00003KP-XBLNR, sy-vline,
  WA_/ATL/KPFI00003KP-GJAHR, sy-vline,
  WA_/ATL/KPFI00003KP-BUZEI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ATL/KPFI00003KP 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_/ATL/KPFI00003KP 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_/ATL/KPFI00003KP INTO WA_/ATL/KPFI00003KP.


*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 GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_/ATL/KPFI00003KP-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ATL/KPFI00003KP-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ATL/KPFI00003KP-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ATL/KPFI00003KP-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ATL/KPFI00003KP-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ATL/KPFI00003KP-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HKONT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ATL/KPFI00003KP-HKONT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ATL/KPFI00003KP-HKONT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ZKUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ATL/KPFI00003KP-ZKUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ATL/KPFI00003KP-ZKUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ZBELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ATL/KPFI00003KP-ZBELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ATL/KPFI00003KP-ZBELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field ZGJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_/ATL/KPFI00003KP-ZGJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ATL/KPFI00003KP-ZGJAHR.
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_/ATL/KPFI00003KP_STR, 
MANDT TYPE STRING,
BANKS TYPE STRING,
ZBANK_NO TYPE STRING,
ZBRANCHE TYPE STRING,
ZACCT TYPE STRING,
ZCHEQUE_NO TYPE STRING,
ZCOUNT TYPE STRING,
BUKRS TYPE STRING,
XBLNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
KUNNR TYPE STRING,
LIFNR TYPE STRING,
HKONT TYPE STRING,
ZKUNNR TYPE STRING,
ZBUKRS TYPE STRING,
ZBELNR TYPE STRING,
ZGJAHR TYPE STRING,
ZBUZEI TYPE STRING,
ZMOVE TYPE STRING,
UMSKZ TYPE STRING,
ZFBDT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ATL/KPFI00003KP_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_/ATL/KPFI00003KP_STR-MANDT sy-vline 
WA_/ATL/KPFI00003KP_STR-BANKS sy-vline 
WA_/ATL/KPFI00003KP_STR-ZBANK_NO sy-vline 
WA_/ATL/KPFI00003KP_STR-ZBRANCHE sy-vline 
WA_/ATL/KPFI00003KP_STR-ZACCT sy-vline 
WA_/ATL/KPFI00003KP_STR-ZCHEQUE_NO sy-vline 
WA_/ATL/KPFI00003KP_STR-ZCOUNT sy-vline 
WA_/ATL/KPFI00003KP_STR-BUKRS sy-vline 
WA_/ATL/KPFI00003KP_STR-XBLNR sy-vline 
WA_/ATL/KPFI00003KP_STR-GJAHR sy-vline 
WA_/ATL/KPFI00003KP_STR-BUZEI sy-vline 
WA_/ATL/KPFI00003KP_STR-KUNNR sy-vline 
WA_/ATL/KPFI00003KP_STR-LIFNR sy-vline 
WA_/ATL/KPFI00003KP_STR-HKONT sy-vline 
WA_/ATL/KPFI00003KP_STR-ZKUNNR sy-vline 
WA_/ATL/KPFI00003KP_STR-ZBUKRS sy-vline 
WA_/ATL/KPFI00003KP_STR-ZBELNR sy-vline 
WA_/ATL/KPFI00003KP_STR-ZGJAHR sy-vline 
WA_/ATL/KPFI00003KP_STR-ZBUZEI sy-vline 
WA_/ATL/KPFI00003KP_STR-ZMOVE sy-vline 
WA_/ATL/KPFI00003KP_STR-UMSKZ sy-vline 
WA_/ATL/KPFI00003KP_STR-ZFBDT sy-vline      INTO ld_text SEPARATED BY SPACE.

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