ABAP Select data from SAP table KPC_LINE_ITEM_ACTUAL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KPC_LINE_ITEM_ACTUAL
*  INTO TABLE @DATA(IT_KPC_LINE_ITEM_ACTUAL2).
*--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_KPC_LINE_ITEM_ACTUAL INDEX 1 INTO DATA(WA_KPC_LINE_ITEM_ACTUAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KPC_LINE_ITEM_ACTUAL>-PROJECT_OBJECT = 1.
<KPC_LINE_ITEM_ACTUAL>-PROJECT_OBJECT = 1.
<KPC_LINE_ITEM_ACTUAL>-OBJECT_TYPE = 1.
<KPC_LINE_ITEM_ACTUAL>-OBJNR = 1.
<KPC_LINE_ITEM_ACTUAL>-BUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KPC_LINE_ITEM_ACTUAL-COMPANYIDUC, sy-vline,
  WA_KPC_LINE_ITEM_ACTUAL-KOKRS, sy-vline,
  WA_KPC_LINE_ITEM_ACTUAL-WERKS, sy-vline,
  WA_KPC_LINE_ITEM_ACTUAL-GSBER, sy-vline,
  WA_KPC_LINE_ITEM_ACTUAL-FKBER, sy-vline,
  WA_KPC_LINE_ITEM_ACTUAL-SCOPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KPC_LINE_ITEM_ACTUAL 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_KPC_LINE_ITEM_ACTUAL 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_KPC_LINE_ITEM_ACTUAL INTO WA_KPC_LINE_ITEM_ACTUAL.


*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 SCOPE, internal->external for field SCOPE
CALL FUNCTION 'CONVERSION_EXIT_SCOPE_OUTPUT'
  EXPORTING
    input =                      WA_KPC_LINE_ITEM_ACTUAL-SCOPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KPC_LINE_ITEM_ACTUAL-SCOPE.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit SCOPE, internal->external for field PSCOPE
CALL FUNCTION 'CONVERSION_EXIT_SCOPE_OUTPUT'
  EXPORTING
    input =                      WA_KPC_LINE_ITEM_ACTUAL-PSCOPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KPC_LINE_ITEM_ACTUAL-PSCOPE.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field REFGJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_KPC_LINE_ITEM_ACTUAL-REFGJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KPC_LINE_ITEM_ACTUAL-REFGJ.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit BEKNZ, internal->external for field BEKNZ
CALL FUNCTION 'CONVERSION_EXIT_BEKNZ_OUTPUT'
  EXPORTING
    input =                      WA_KPC_LINE_ITEM_ACTUAL-BEKNZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KPC_LINE_ITEM_ACTUAL-BEKNZ.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KPC_LINE_ITEM_ACTUAL-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KPC_LINE_ITEM_ACTUAL-MEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_KPC_LINE_ITEM_ACTUAL-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KPC_LINE_ITEM_ACTUAL-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WTGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KPC_LINE_ITEM_ACTUAL-WTGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KPC_LINE_ITEM_ACTUAL-WTGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WOGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KPC_LINE_ITEM_ACTUAL-WOGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KPC_LINE_ITEM_ACTUAL-WOGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WKGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_KPC_LINE_ITEM_ACTUAL-WKGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KPC_LINE_ITEM_ACTUAL-WKGBTR.
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_KPC_LINE_ITEM_ACTUAL_STR, 
PROJECT_OBJECT TYPE STRING,
PROJECT_OBJECT TYPE STRING,
OBJECT_TYPE TYPE STRING,
OBJNR TYPE STRING,
BUKRS TYPE STRING,
COMPANYIDUC TYPE STRING,
KOKRS TYPE STRING,
WERKS TYPE STRING,
GSBER TYPE STRING,
FKBER TYPE STRING,
SCOPE TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
GJAHR TYPE STRING,
PERIO TYPE STRING,
KSTAR TYPE STRING,
KSTAR_TXT TYPE STRING,
PAROB1 TYPE STRING,
PBUKRS TYPE STRING,
PARGB TYPE STRING,
PFKBER TYPE STRING,
PSCOPE TYPE STRING,
USPOB TYPE STRING,
REFBT TYPE STRING,
REFBN TYPE STRING,
REFBK TYPE STRING,
REFGJ TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
BEKNZ TYPE STRING,
BELTP TYPE STRING,
WRTTP TYPE STRING,
MEGBTR TYPE STRING,
MEINH TYPE STRING,
MATNR TYPE STRING,
SGTXT TYPE STRING,
BUDAT TYPE STRING,
BLDAT TYPE STRING,
WTGBTR TYPE STRING,
TWAER TYPE STRING,
WOGBTR TYPE STRING,
OWAER TYPE STRING,
WKGBTR TYPE STRING,
KWAER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KPC_LINE_ITEM_ACTUAL_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_KPC_LINE_ITEM_ACTUAL_STR-PROJECT_OBJECT sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-PROJECT_OBJECT sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-OBJECT_TYPE sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-OBJNR sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-BUKRS sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-COMPANYIDUC sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-KOKRS sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-WERKS sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-GSBER sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-FKBER sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-SCOPE sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-BELNR sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-BUZEI sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-GJAHR sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-PERIO sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-KSTAR sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-KSTAR_TXT sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-PAROB1 sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-PBUKRS sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-PARGB sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-PFKBER sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-PSCOPE sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-USPOB sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-REFBT sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-REFBN sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-REFBK sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-REFGJ sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-EBELN sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-EBELP sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-BEKNZ sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-BELTP sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-WRTTP sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-MEGBTR sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-MEINH sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-MATNR sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-SGTXT sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-BUDAT sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-BLDAT sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-WTGBTR sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-TWAER sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-WOGBTR sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-OWAER sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-WKGBTR sy-vline 
WA_KPC_LINE_ITEM_ACTUAL_STR-KWAER sy-vline      INTO ld_text SEPARATED BY SPACE.

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