ABAP Select data from SAP table KARTE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KARTE
*  INTO TABLE @DATA(IT_KARTE2).
*--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_KARTE INDEX 1 INTO DATA(WA_KARTE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KARTE>-BARC0 = 1.
<KARTE>-BARC1 = 1.
<KARTE>-BARCL = 1.
<KARTE>-BARC3 = 1.
<KARTE>-BARCA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KARTE-BARCV, sy-vline,
  WA_KARTE-BARC6, sy-vline,
  WA_KARTE-MAKTX, sy-vline,
  WA_KARTE-PVBTX, sy-vline,
  WA_KARTE-PKPOS, sy-vline,
  WA_KARTE-MATNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KARTE 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_KARTE 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_KARTE INTO WA_KARTE.


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

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KARTE-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KARTE-MEINS.
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_KARTE_STR, 
BARC0 TYPE STRING,
BARC1 TYPE STRING,
BARCL TYPE STRING,
BARC3 TYPE STRING,
BARCA TYPE STRING,
BARCV TYPE STRING,
BARC6 TYPE STRING,
MAKTX TYPE STRING,
PVBTX TYPE STRING,
PKPOS TYPE STRING,
MATNR TYPE STRING,
PRVBE TYPE STRING,
BEHTX TYPE STRING,
WERKS TYPE STRING,
BEHMG TYPE STRING,
MEINS TYPE STRING,
INHLT TYPE STRING,
RGVER TYPE STRING,
LGORT TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
ANZLT TYPE STRING,
TAGIDHEX TYPE STRING,
TAGIDTEXT TYPE STRING,
KANBAN_DUMMY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KARTE_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_KARTE_STR-BARC0 sy-vline 
WA_KARTE_STR-BARC1 sy-vline 
WA_KARTE_STR-BARCL sy-vline 
WA_KARTE_STR-BARC3 sy-vline 
WA_KARTE_STR-BARCA sy-vline 
WA_KARTE_STR-BARCV sy-vline 
WA_KARTE_STR-BARC6 sy-vline 
WA_KARTE_STR-MAKTX sy-vline 
WA_KARTE_STR-PVBTX sy-vline 
WA_KARTE_STR-PKPOS sy-vline 
WA_KARTE_STR-MATNR sy-vline 
WA_KARTE_STR-PRVBE sy-vline 
WA_KARTE_STR-BEHTX sy-vline 
WA_KARTE_STR-WERKS sy-vline 
WA_KARTE_STR-BEHMG sy-vline 
WA_KARTE_STR-MEINS sy-vline 
WA_KARTE_STR-INHLT sy-vline 
WA_KARTE_STR-RGVER sy-vline 
WA_KARTE_STR-LGORT sy-vline 
WA_KARTE_STR-NAME1 sy-vline 
WA_KARTE_STR-NAME2 sy-vline 
WA_KARTE_STR-NAME3 sy-vline 
WA_KARTE_STR-NAME4 sy-vline 
WA_KARTE_STR-ANZLT sy-vline 
WA_KARTE_STR-TAGIDHEX sy-vline 
WA_KARTE_STR-TAGIDTEXT sy-vline 
WA_KARTE_STR-KANBAN_DUMMY sy-vline      INTO ld_text SEPARATED BY SPACE.

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