ABAP Select data from SAP table KO200 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KO200 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 KO200. 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 KO200 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_KO200 TYPE STANDARD TABLE OF KO200,
      WA_KO200 TYPE KO200,
      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: <KO200> TYPE KO200.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KO200.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KO200
  INTO TABLE IT_KO200.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KO200
*  INTO TABLE @DATA(IT_KO2002).
*--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_KO200 INDEX 1 INTO DATA(WA_KO2002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KO200 ASSIGNING <KO200>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KO200>-TRKORR = 1.
<KO200>-AS4POS = 1.
<KO200>-PGMID = 1.
<KO200>-OBJECT = 1.
<KO200>-OBJ_NAME = 1.

ENDLOOP.

LOOP AT IT_KO200 INTO WA_KO200.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KO200-OBJFUNC, sy-vline,
  WA_KO200-LOCKFLAG, sy-vline,
  WA_KO200-GENNUM, sy-vline,
  WA_KO200-LANG, sy-vline,
  WA_KO200-ACTIVITY, sy-vline,
  WA_KO200-AUTHOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KO200 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_KO200 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_KO200 INTO WA_KO200.


*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 ISOLA, internal->external for field LANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_KO200-LANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KO200-LANG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field MASTERLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_KO200-MASTERLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KO200-MASTERLANG.
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_KO200_STR, 
TRKORR TYPE STRING,
AS4POS TYPE STRING,
PGMID TYPE STRING,
OBJECT TYPE STRING,
OBJ_NAME TYPE STRING,
OBJFUNC TYPE STRING,
LOCKFLAG TYPE STRING,
GENNUM TYPE STRING,
LANG TYPE STRING,
ACTIVITY TYPE STRING,
AUTHOR TYPE STRING,
DEVCLASS TYPE STRING,
GENFLAG TYPE STRING,
MASTERLANG TYPE STRING,
OPERATION TYPE STRING,
EDTFLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KO200_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_KO200_STR-TRKORR sy-vline 
WA_KO200_STR-AS4POS sy-vline 
WA_KO200_STR-PGMID sy-vline 
WA_KO200_STR-OBJECT sy-vline 
WA_KO200_STR-OBJ_NAME sy-vline 
WA_KO200_STR-OBJFUNC sy-vline 
WA_KO200_STR-LOCKFLAG sy-vline 
WA_KO200_STR-GENNUM sy-vline 
WA_KO200_STR-LANG sy-vline 
WA_KO200_STR-ACTIVITY sy-vline 
WA_KO200_STR-AUTHOR sy-vline 
WA_KO200_STR-DEVCLASS sy-vline 
WA_KO200_STR-GENFLAG sy-vline 
WA_KO200_STR-MASTERLANG sy-vline 
WA_KO200_STR-OPERATION sy-vline 
WA_KO200_STR-EDTFLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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