ABAP Select data from SAP table EDI_PURCHASE_ORDER_CONF_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EDI_PURCHASE_ORDER_CONF_ITEM
*  INTO TABLE @DATA(IT_EDI_PURCHASE_ORDER_CONF_ITEM2).
*--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_EDI_PURCHASE_ORDER_CONF_ITEM INDEX 1 INTO DATA(WA_EDI_PURCHASE_ORDER_CONF_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EDI_PURCHASE_ORDER_CONF_ITEM>-CONTROLLER = 1.
<EDI_PURCHASE_ORDER_CONF_ITEM>-ACTION_CODE = 1.
<EDI_PURCHASE_ORDER_CONF_ITEM>-PURCHASE_ORDER_ITEM_ID = 1.
<EDI_PURCHASE_ORDER_CONF_ITEM>-PURCHASE_ORDER_ITEM_CATEGORY = 1.
<EDI_PURCHASE_ORDER_CONF_ITEM>-SALES_ORDER_ITEM_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EDI_PURCHASE_ORDER_CONF_ITEM-SALES_ORDER_ITEM_CATEGORY, sy-vline,
  WA_EDI_PURCHASE_ORDER_CONF_ITEM-ORDER_ITEM_TEXT, sy-vline,
  WA_EDI_PURCHASE_ORDER_CONF_ITEM-REQUESTED_QUANTITY, sy-vline,
  WA_EDI_PURCHASE_ORDER_CONF_ITEM-CONTROLLER, sy-vline,
  WA_EDI_PURCHASE_ORDER_CONF_ITEM-UNIT_CODE, sy-vline,
  WA_EDI_PURCHASE_ORDER_CONF_ITEM-CONTENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EDI_PURCHASE_ORDER_CONF_ITEM 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_EDI_PURCHASE_ORDER_CONF_ITEM 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_EDI_PURCHASE_ORDER_CONF_ITEM INTO WA_EDI_PURCHASE_ORDER_CONF_ITEM.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_EDI_PURCHASE_ORDER_CONF_ITEM_STR, 
CONTROLLER TYPE STRING,
ACTION_CODE TYPE STRING,
PURCHASE_ORDER_ITEM_ID TYPE STRING,
PURCHASE_ORDER_ITEM_CATEGORY TYPE STRING,
SALES_ORDER_ITEM_ID TYPE STRING,
SALES_ORDER_ITEM_CATEGORY TYPE STRING,
ORDER_ITEM_TEXT TYPE STRING,
REQUESTED_QUANTITY TYPE STRING,
CONTROLLER TYPE STRING,
UNIT_CODE TYPE STRING,
CONTENT TYPE STRING,
HIGHER_LEVEL_ITEM TYPE STRING,
SALES_DOCUMENT_RJCN_REASON TYPE STRING,
SALES_DOCUMENT_RJCN_REASON_NAM TYPE STRING,
RETURN_ATTRIBUTES TYPE STRING,
CONTROLLER TYPE STRING,
PRODUCT_TO_REMAIN_WITH_CUST TYPE STRING,
RETURN_MATERIAL_AUTH_ID TYPE STRING,
DELIVERY_DATE_QUANTITY_IS_FIXE TYPE STRING,
DEPARTMENT_CLASSIFICATION_BY_C TYPE STRING,
MATERIAL_USAGE_INDICATOR TYPE STRING,
IS_IUIDRELEVANT TYPE STRING,
CUST_RET_MATL_AUTHZN TYPE STRING,
REJECTION_REASON_TEXT TYPE STRING,
PRODUCT TYPE STRING,
CONTROLLER TYPE STRING,
GLOBAL_TRADE_ITEM_NUMBER TYPE STRING,
BUYER_PRODUCT_ID TYPE STRING,
SUPPLIER_PRODUCT_ID TYPE STRING,
NET_PRICE TYPE STRING,
CONTROLLER TYPE STRING,
AMOUNT TYPE STRING,
CONTROLLER TYPE STRING,
CURRENCY_CODE TYPE STRING,
CONTENT TYPE STRING,
BASE_QUANTITY TYPE STRING,
CONTROLLER TYPE STRING,
UNIT_CODE TYPE STRING,
CONTENT TYPE STRING,
NET_AMOUNT TYPE STRING,
CONTROLLER TYPE STRING,
CURRENCY_CODE TYPE STRING,
CONTENT TYPE STRING,
MAXIMUM_NUMBER_OF_PARTIAL_DELI TYPE STRING,
UNLOADING_POINT_NAME TYPE STRING,
RECEIVING_POINT TYPE STRING,
PLANT TYPE STRING,
STORAGE_LOCATION TYPE STRING,
PARTY TYPE STRING,
ITEM_INCOTERMS TYPE STRING,
CONTROLLER TYPE STRING,
INCOTERMS_CLASSIFICATION TYPE STRING,
INCOTERMS_LOCATION1 TYPE STRING,
INCOTERMS_LOCATION2 TYPE STRING,
SCHEDULE_LINE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EDI_PURCHASE_ORDER_CONF_ITEM_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_EDI_PURCHASE_ORDER_CONF_ITEM_STR-CONTROLLER sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-ACTION_CODE sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-PURCHASE_ORDER_ITEM_ID sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-PURCHASE_ORDER_ITEM_CATEGORY sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-SALES_ORDER_ITEM_ID sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-SALES_ORDER_ITEM_CATEGORY sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-ORDER_ITEM_TEXT sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-REQUESTED_QUANTITY sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-CONTROLLER sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-UNIT_CODE sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-CONTENT sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-HIGHER_LEVEL_ITEM sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-SALES_DOCUMENT_RJCN_REASON sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-SALES_DOCUMENT_RJCN_REASON_NAM sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-RETURN_ATTRIBUTES sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-CONTROLLER sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-PRODUCT_TO_REMAIN_WITH_CUST sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-RETURN_MATERIAL_AUTH_ID sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-DELIVERY_DATE_QUANTITY_IS_FIXE sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-DEPARTMENT_CLASSIFICATION_BY_C sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-MATERIAL_USAGE_INDICATOR sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-IS_IUIDRELEVANT sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-CUST_RET_MATL_AUTHZN sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-REJECTION_REASON_TEXT sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-PRODUCT sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-CONTROLLER sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-GLOBAL_TRADE_ITEM_NUMBER sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-BUYER_PRODUCT_ID sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-SUPPLIER_PRODUCT_ID sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-NET_PRICE sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-CONTROLLER sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-AMOUNT sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-CONTROLLER sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-CURRENCY_CODE sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-CONTENT sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-BASE_QUANTITY sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-CONTROLLER sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-UNIT_CODE sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-CONTENT sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-NET_AMOUNT sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-CONTROLLER sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-CURRENCY_CODE sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-CONTENT sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-MAXIMUM_NUMBER_OF_PARTIAL_DELI sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-UNLOADING_POINT_NAME sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-RECEIVING_POINT sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-PLANT sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-STORAGE_LOCATION sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-PARTY sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-ITEM_INCOTERMS sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-CONTROLLER sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-INCOTERMS_CLASSIFICATION sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-INCOTERMS_LOCATION1 sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-INCOTERMS_LOCATION2 sy-vline 
WA_EDI_PURCHASE_ORDER_CONF_ITEM_STR-SCHEDULE_LINE sy-vline      INTO ld_text SEPARATED BY SPACE.

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