ABAP Select data from SAP table EDOC_KR_INCOMING_INVOICE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EDOC_KR_INCOMING_INVOICE
*  INTO TABLE @DATA(IT_EDOC_KR_INCOMING_INVOICE2).
*--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_EDOC_KR_INCOMING_INVOICE INDEX 1 INTO DATA(WA_EDOC_KR_INCOMING_INVOICE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EDOC_KR_INCOMING_INVOICE>-EDOC_GUID = 1.
<EDOC_KR_INCOMING_INVOICE>-APPRVL_NO = 1.
<EDOC_KR_INCOMING_INVOICE>-VENDOR = 1.
<EDOC_KR_INCOMING_INVOICE>-VENDOR_NAME = 1.
<EDOC_KR_INCOMING_INVOICE>-TAX_BASE_AMT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EDOC_KR_INCOMING_INVOICE-TAX_AMOUNT, sy-vline,
  WA_EDOC_KR_INCOMING_INVOICE-AMOUNT, sy-vline,
  WA_EDOC_KR_INCOMING_INVOICE-TRANSFER_DATE, sy-vline,
  WA_EDOC_KR_INCOMING_INVOICE-BELNR, sy-vline,
  WA_EDOC_KR_INCOMING_INVOICE-INVOICE_DATE, sy-vline,
  WA_EDOC_KR_INCOMING_INVOICE-ISSUE_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EDOC_KR_INCOMING_INVOICE 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_EDOC_KR_INCOMING_INVOICE 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_EDOC_KR_INCOMING_INVOICE INTO WA_EDOC_KR_INCOMING_INVOICE.


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

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EDOC_KR_INCOMING_INVOICE-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EDOC_KR_INCOMING_INVOICE-BELNR.
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_EDOC_KR_INCOMING_INVOICE_STR, 
EDOC_GUID TYPE STRING,
APPRVL_NO TYPE STRING,
VENDOR TYPE STRING,
VENDOR_NAME TYPE STRING,
TAX_BASE_AMT TYPE STRING,
TAX_AMOUNT TYPE STRING,
AMOUNT TYPE STRING,
TRANSFER_DATE TYPE STRING,
BELNR TYPE STRING,
INVOICE_DATE TYPE STRING,
ISSUE_DATE TYPE STRING,
S_SUPPLIER_STCD2 TYPE STRING,
S_BUSINESS_PLACE TYPE STRING,
S_COMPANY_NAME TYPE STRING,
S_REPRES TYPE STRING,
S_ADDRESS TYPE STRING,
B_SUPPLIER_STCD2 TYPE STRING,
B_BUSINESS_PLACE TYPE STRING,
B_COMPANY_NAME TYPE STRING,
B_REPRES TYPE STRING,
B_ADDRESS TYPE STRING,
INVC_CLFN TYPE STRING,
INVOICE_TYPE TYPE STRING,
ISSUANCE_TYPE TYPE STRING,
REMARK TYPE STRING,
RCPT_BILLG TYPE STRING,
BUYER_EMAIL TYPE STRING,
BUYER_EMAIL1 TYPE STRING,
BUYER_EMAIL2 TYPE STRING,
ITEM_DATE TYPE STRING,
ITEM_NAME TYPE STRING,
ITEM_UNIT TYPE STRING,
ITEM_QUANTITY TYPE STRING,
ITEM_UNIT_PRICE TYPE STRING,
ITEM_BASE_AMT TYPE STRING,
ITEM_TAX_AMOUNT TYPE STRING,
ITEM_REMARKS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EDOC_KR_INCOMING_INVOICE_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_EDOC_KR_INCOMING_INVOICE_STR-EDOC_GUID sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-APPRVL_NO sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-VENDOR sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-VENDOR_NAME sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-TAX_BASE_AMT sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-TAX_AMOUNT sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-AMOUNT sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-TRANSFER_DATE sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-BELNR sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-INVOICE_DATE sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-ISSUE_DATE sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-S_SUPPLIER_STCD2 sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-S_BUSINESS_PLACE sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-S_COMPANY_NAME sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-S_REPRES sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-S_ADDRESS sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-B_SUPPLIER_STCD2 sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-B_BUSINESS_PLACE sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-B_COMPANY_NAME sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-B_REPRES sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-B_ADDRESS sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-INVC_CLFN sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-INVOICE_TYPE sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-ISSUANCE_TYPE sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-REMARK sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-RCPT_BILLG sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-BUYER_EMAIL sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-BUYER_EMAIL1 sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-BUYER_EMAIL2 sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-ITEM_DATE sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-ITEM_NAME sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-ITEM_UNIT sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-ITEM_QUANTITY sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-ITEM_UNIT_PRICE sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-ITEM_BASE_AMT sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-ITEM_TAX_AMOUNT sy-vline 
WA_EDOC_KR_INCOMING_INVOICE_STR-ITEM_REMARKS sy-vline      INTO ld_text SEPARATED BY SPACE.

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