ABAP Select data from SAP table EDOTWINVEXCH into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EDOTWINVEXCH 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 EDOTWINVEXCH. 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 EDOTWINVEXCH 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_EDOTWINVEXCH TYPE STANDARD TABLE OF EDOTWINVEXCH,
      WA_EDOTWINVEXCH TYPE EDOTWINVEXCH,
      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: <EDOTWINVEXCH> TYPE EDOTWINVEXCH.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EDOTWINVEXCH
*  INTO TABLE @DATA(IT_EDOTWINVEXCH2).
*--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_EDOTWINVEXCH INDEX 1 INTO DATA(WA_EDOTWINVEXCH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EDOTWINVEXCH>-MANDT = 1.
<EDOTWINVEXCH>-EDOC_GUID = 1.
<EDOTWINVEXCH>-GUI_NUMBER = 1.
<EDOTWINVEXCH>-DOC_CLASS = 1.
<EDOTWINVEXCH>-CUSTOMER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EDOTWINVEXCH-TAX_CODE, sy-vline,
  WA_EDOTWINVEXCH-BRANCH, sy-vline,
  WA_EDOTWINVEXCH-CANCEL_REASON, sy-vline,
  WA_EDOTWINVEXCH-CANCEL_TYPE, sy-vline,
  WA_EDOTWINVEXCH-RETURN_TAX_DOC_NO, sy-vline,
  WA_EDOTWINVEXCH-ALLOWANCE_TP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EDOTWINVEXCH 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_EDOTWINVEXCH 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_EDOTWINVEXCH INTO WA_EDOTWINVEXCH.


*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 CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EDOTWINVEXCH-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EDOTWINVEXCH-CUSTOMER.
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_EDOTWINVEXCH_STR, 
MANDT TYPE STRING,
EDOC_GUID TYPE STRING,
GUI_NUMBER TYPE STRING,
DOC_CLASS TYPE STRING,
CUSTOMER TYPE STRING,
TAX_CODE TYPE STRING,
BRANCH TYPE STRING,
CANCEL_REASON TYPE STRING,
CANCEL_TYPE TYPE STRING,
RETURN_TAX_DOC_NO TYPE STRING,
ALLOWANCE_TP TYPE STRING,
REJECTION_DATE TYPE STRING,
REJECTION_TIME TYPE STRING,
REJECTION_REASON TYPE STRING,
CANCELLATION_DATE TYPE STRING,
CANCELLATION_TIME TYPE STRING,
ALLOWANCE_DATE TYPE STRING,
ALLOWANCE_NUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EDOTWINVEXCH_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_EDOTWINVEXCH_STR-MANDT sy-vline 
WA_EDOTWINVEXCH_STR-EDOC_GUID sy-vline 
WA_EDOTWINVEXCH_STR-GUI_NUMBER sy-vline 
WA_EDOTWINVEXCH_STR-DOC_CLASS sy-vline 
WA_EDOTWINVEXCH_STR-CUSTOMER sy-vline 
WA_EDOTWINVEXCH_STR-TAX_CODE sy-vline 
WA_EDOTWINVEXCH_STR-BRANCH sy-vline 
WA_EDOTWINVEXCH_STR-CANCEL_REASON sy-vline 
WA_EDOTWINVEXCH_STR-CANCEL_TYPE sy-vline 
WA_EDOTWINVEXCH_STR-RETURN_TAX_DOC_NO sy-vline 
WA_EDOTWINVEXCH_STR-ALLOWANCE_TP sy-vline 
WA_EDOTWINVEXCH_STR-REJECTION_DATE sy-vline 
WA_EDOTWINVEXCH_STR-REJECTION_TIME sy-vline 
WA_EDOTWINVEXCH_STR-REJECTION_REASON sy-vline 
WA_EDOTWINVEXCH_STR-CANCELLATION_DATE sy-vline 
WA_EDOTWINVEXCH_STR-CANCELLATION_TIME sy-vline 
WA_EDOTWINVEXCH_STR-ALLOWANCE_DATE sy-vline 
WA_EDOTWINVEXCH_STR-ALLOWANCE_NUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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