ABAP Select data from SAP table KOMWCOCOI into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP KOMWCOCOI 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. 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 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 TYPE STANDARD TABLE OF KOMWCOCOI,
      WA_KOMWCOCOI TYPE KOMWCOCOI,
      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> TYPE KOMWCOCOI.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KOMWCOCOI
*  INTO TABLE @DATA(IT_KOMWCOCOI2).
*--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 INDEX 1 INTO DATA(WA_KOMWCOCOI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KOMWCOCOI>-CLIENT = 1.
<KOMWCOCOI>-NUM = 1.
<KOMWCOCOI>-ITEM_GUID = 1.
<KOMWCOCOI>-GUID = 1.
<KOMWCOCOI>-ELIGIBLE_CUST = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KOMWCOCOI-ELIGIBLE_VENDOR, sy-vline,
  WA_KOMWCOCOI-LIST_NUM, sy-vline,
  WA_KOMWCOCOI-EXCLUSION, sy-vline,
  WA_KOMWCOCOI-REFERENCE, sy-vline,
  WA_KOMWCOCOI-DEACT, sy-vline,
  WA_KOMWCOCOI-DATE_FROM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KOMWCOCOI 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 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 INTO WA_KOMWCOCOI.


*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
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_KOMWCOCOI-NUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMWCOCOI-NUM.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_KOMWCOCOI-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KOMWCOCOI-MATERIAL.
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_STR, 
CLIENT TYPE STRING,
NUM TYPE STRING,
ITEM_GUID TYPE STRING,
GUID TYPE STRING,
ELIGIBLE_CUST TYPE STRING,
ELIGIBLE_VENDOR TYPE STRING,
LIST_NUM TYPE STRING,
EXCLUSION TYPE STRING,
REFERENCE TYPE STRING,
DEACT TYPE STRING,
DATE_FROM TYPE STRING,
DATE_TO TYPE STRING,
ELIGIBLE_PLANT TYPE STRING,
QUANTITY TYPE STRING,
UNIT_OF_MEASURE TYPE STRING,
_DATAAGING TYPE STRING,
AMOUNT TYPE STRING,
CURRENCY TYPE STRING,
MATERIAL TYPE STRING,
EXT_GUID TYPE STRING,
FILTERED_OUT_GT TYPE STRING,
UPDKZ_GT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KOMWCOCOI_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_STR-CLIENT sy-vline 
WA_KOMWCOCOI_STR-NUM sy-vline 
WA_KOMWCOCOI_STR-ITEM_GUID sy-vline 
WA_KOMWCOCOI_STR-GUID sy-vline 
WA_KOMWCOCOI_STR-ELIGIBLE_CUST sy-vline 
WA_KOMWCOCOI_STR-ELIGIBLE_VENDOR sy-vline 
WA_KOMWCOCOI_STR-LIST_NUM sy-vline 
WA_KOMWCOCOI_STR-EXCLUSION sy-vline 
WA_KOMWCOCOI_STR-REFERENCE sy-vline 
WA_KOMWCOCOI_STR-DEACT sy-vline 
WA_KOMWCOCOI_STR-DATE_FROM sy-vline 
WA_KOMWCOCOI_STR-DATE_TO sy-vline 
WA_KOMWCOCOI_STR-ELIGIBLE_PLANT sy-vline 
WA_KOMWCOCOI_STR-QUANTITY sy-vline 
WA_KOMWCOCOI_STR-UNIT_OF_MEASURE sy-vline 
WA_KOMWCOCOI_STR-_DATAAGING sy-vline 
WA_KOMWCOCOI_STR-AMOUNT sy-vline 
WA_KOMWCOCOI_STR-CURRENCY sy-vline 
WA_KOMWCOCOI_STR-MATERIAL sy-vline 
WA_KOMWCOCOI_STR-EXT_GUID sy-vline 
WA_KOMWCOCOI_STR-FILTERED_OUT_GT sy-vline 
WA_KOMWCOCOI_STR-UPDKZ_GT sy-vline      INTO ld_text SEPARATED BY SPACE.

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