ABAP Select data from SAP table KO013 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KO013 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 KO013. 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 KO013 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_KO013 TYPE STANDARD TABLE OF KO013,
      WA_KO013 TYPE KO013,
      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: <KO013> TYPE KO013.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KO013.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KO013
  INTO TABLE IT_KO013.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KO013
*  INTO TABLE @DATA(IT_KO0132).
*--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_KO013 INDEX 1 INTO DATA(WA_KO0132).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KO013 ASSIGNING <KO013>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KO013>-TRKORR = 1.
<KO013>-AS4TEXT = 1.
<KO013>-TRFUNCTION = 1.
<KO013>-TRFUNCTN_T = 1.
<KO013>-TRFUNCTN_L = 1.

ENDLOOP.

LOOP AT IT_KO013 INTO WA_KO013.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KO013-TRSTATUS, sy-vline,
  WA_KO013-TRSTATUS_T, sy-vline,
  WA_KO013-TARSYSTEM, sy-vline,
  WA_KO013-TARGETDESC, sy-vline,
  WA_KO013-KORRDEV, sy-vline,
  WA_KO013-AS4USER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KO013 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_KO013 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_KO013 INTO WA_KO013.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_KO013_STR, 
TRKORR TYPE STRING,
AS4TEXT TYPE STRING,
TRFUNCTION TYPE STRING,
TRFUNCTN_T TYPE STRING,
TRFUNCTN_L TYPE STRING,
TRSTATUS TYPE STRING,
TRSTATUS_T TYPE STRING,
TARSYSTEM TYPE STRING,
TARGETDESC TYPE STRING,
KORRDEV TYPE STRING,
AS4USER TYPE STRING,
AS4DATE TYPE STRING,
AS4TIME TYPE STRING,
CLIENT TYPE STRING,
TARCLIENT TYPE STRING,
STRKORR TYPE STRING,
TARDEVCL TYPE STRING,
DEVCLASS TYPE STRING,
TARLAYER TYPE STRING,
PROJECT TYPE STRING,
PRJ_TEXT TYPE STRING,
CHDOC_ID TYPE STRING,
CHDOC_GUID TYPE STRING,
CHDOC_DESC TYPE STRING,
REPOID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KO013_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_KO013_STR-TRKORR sy-vline 
WA_KO013_STR-AS4TEXT sy-vline 
WA_KO013_STR-TRFUNCTION sy-vline 
WA_KO013_STR-TRFUNCTN_T sy-vline 
WA_KO013_STR-TRFUNCTN_L sy-vline 
WA_KO013_STR-TRSTATUS sy-vline 
WA_KO013_STR-TRSTATUS_T sy-vline 
WA_KO013_STR-TARSYSTEM sy-vline 
WA_KO013_STR-TARGETDESC sy-vline 
WA_KO013_STR-KORRDEV sy-vline 
WA_KO013_STR-AS4USER sy-vline 
WA_KO013_STR-AS4DATE sy-vline 
WA_KO013_STR-AS4TIME sy-vline 
WA_KO013_STR-CLIENT sy-vline 
WA_KO013_STR-TARCLIENT sy-vline 
WA_KO013_STR-STRKORR sy-vline 
WA_KO013_STR-TARDEVCL sy-vline 
WA_KO013_STR-DEVCLASS sy-vline 
WA_KO013_STR-TARLAYER sy-vline 
WA_KO013_STR-PROJECT sy-vline 
WA_KO013_STR-PRJ_TEXT sy-vline 
WA_KO013_STR-CHDOC_ID sy-vline 
WA_KO013_STR-CHDOC_GUID sy-vline 
WA_KO013_STR-CHDOC_DESC sy-vline 
WA_KO013_STR-REPOID sy-vline      INTO ld_text SEPARATED BY SPACE.

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