ABAP Select data from SAP table KOMWCOCOI_DISP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMWCOCOI_DISP
*  INTO TABLE @DATA(IT_KOMWCOCOI_DISP2).
*--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_KOMWCOCOI_DISP INDEX 1 INTO DATA(WA_KOMWCOCOI_DISP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMWCOCOI_DISP>-CLIENT_MD = 1.
<KOMWCOCOI_DISP>-NUM_MD = 1.
<KOMWCOCOI_DISP>-ITEM_GUID_MD = 1.
<KOMWCOCOI_DISP>-GUID_MD = 1.
<KOMWCOCOI_DISP>-ELIGIBLE_CUST_MD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMWCOCOI_DISP-ELIGIBLE_VENDOR_MD, sy-vline,
  WA_KOMWCOCOI_DISP-LIST_NUM_MD, sy-vline,
  WA_KOMWCOCOI_DISP-EXCLUSION_MD, sy-vline,
  WA_KOMWCOCOI_DISP-REFERENCE_MD, sy-vline,
  WA_KOMWCOCOI_DISP-DEACT_MD, sy-vline,
  WA_KOMWCOCOI_DISP-DATE_FROM_MD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMWCOCOI_DISP 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_KOMWCOCOI_DISP 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_KOMWCOCOI_DISP INTO WA_KOMWCOCOI_DISP.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field FROM_LIST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMWCOCOI_DISP-FROM_LIST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMWCOCOI_DISP-FROM_LIST.
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_KOMWCOCOI_DISP_STR, 
CLIENT_MD TYPE STRING,
NUM_MD TYPE STRING,
ITEM_GUID_MD TYPE STRING,
GUID_MD TYPE STRING,
ELIGIBLE_CUST_MD TYPE STRING,
ELIGIBLE_VENDOR_MD TYPE STRING,
LIST_NUM_MD TYPE STRING,
EXCLUSION_MD TYPE STRING,
REFERENCE_MD TYPE STRING,
DEACT_MD TYPE STRING,
DATE_FROM_MD TYPE STRING,
DATE_TO_MD TYPE STRING,
ELIGIBLE_PLANT_MD TYPE STRING,
QUANTITY_MD TYPE STRING,
UNIT_OF_MEASURE_MD TYPE STRING,
_DATAAGING_MD TYPE STRING,
AMOUNT_MD TYPE STRING,
CURRENCY_MD TYPE STRING,
MATERIAL_MD TYPE STRING,
EXT_GUID_MD TYPE STRING,
FILTERED_OUT_GT_MD TYPE STRING,
UPDKZ_GT_MD TYPE STRING,
TEXT1_TX TYPE STRING,
TEXT2_TX TYPE STRING,
TEXT3_TX TYPE STRING,
TEXT4_TX TYPE STRING,
TEXT5_TX TYPE STRING,
TEXT6_TX TYPE STRING,
TEXT7_TX TYPE STRING,
TEXT8_TX TYPE STRING,
TEXT9_TX TYPE STRING,
TEXT10_TX TYPE STRING,
TEXT11_TX TYPE STRING,
TEXT12_TX TYPE STRING,
TEXT13_TX TYPE STRING,
TEXT14_TX TYPE STRING,
TEXT15_TX TYPE STRING,
TEXT16_TX TYPE STRING,
TEXT17_TX TYPE STRING,
TEXT18_TX TYPE STRING,
TEXT19_TX TYPE STRING,
TEXT20_TX TYPE STRING,
LINECOLOR TYPE STRING,
CT TYPE STRING,
ENTITY TYPE STRING,
CONTEXT TYPE STRING,
ITEM_GUID TYPE STRING,
OBJECT TYPE STRING,
ICON_LOCK TYPE STRING,
FROM_LIST TYPE STRING,
EXPANDED TYPE STRING,
FATHER_GUID TYPE STRING,
FILTER_OUT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMWCOCOI_DISP_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_KOMWCOCOI_DISP_STR-CLIENT_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-NUM_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-ITEM_GUID_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-GUID_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-ELIGIBLE_CUST_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-ELIGIBLE_VENDOR_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-LIST_NUM_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-EXCLUSION_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-REFERENCE_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-DEACT_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-DATE_FROM_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-DATE_TO_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-ELIGIBLE_PLANT_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-QUANTITY_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-UNIT_OF_MEASURE_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-_DATAAGING_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-AMOUNT_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-CURRENCY_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-MATERIAL_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-EXT_GUID_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-FILTERED_OUT_GT_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-UPDKZ_GT_MD sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT1_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT2_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT3_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT4_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT5_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT6_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT7_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT8_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT9_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT10_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT11_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT12_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT13_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT14_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT15_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT16_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT17_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT18_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT19_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-TEXT20_TX sy-vline 
WA_KOMWCOCOI_DISP_STR-LINECOLOR sy-vline 
WA_KOMWCOCOI_DISP_STR-CT sy-vline 
WA_KOMWCOCOI_DISP_STR-ENTITY sy-vline 
WA_KOMWCOCOI_DISP_STR-CONTEXT sy-vline 
WA_KOMWCOCOI_DISP_STR-ITEM_GUID sy-vline 
WA_KOMWCOCOI_DISP_STR-OBJECT sy-vline 
WA_KOMWCOCOI_DISP_STR-ICON_LOCK sy-vline 
WA_KOMWCOCOI_DISP_STR-FROM_LIST sy-vline 
WA_KOMWCOCOI_DISP_STR-EXPANDED sy-vline 
WA_KOMWCOCOI_DISP_STR-FATHER_GUID sy-vline 
WA_KOMWCOCOI_DISP_STR-FILTER_OUT sy-vline      INTO ld_text SEPARATED BY SPACE.

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