ABAP Select data from SAP table MATERIAL_DOCUMENT_REQ_ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MATERIAL_DOCUMENT_REQ_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 MATERIAL_DOCUMENT_REQ_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 MATERIAL_DOCUMENT_REQ_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_MATERIAL_DOCUMENT_REQ_ITEM TYPE STANDARD TABLE OF MATERIAL_DOCUMENT_REQ_ITEM,
      WA_MATERIAL_DOCUMENT_REQ_ITEM TYPE MATERIAL_DOCUMENT_REQ_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: <MATERIAL_DOCUMENT_REQ_ITEM> TYPE MATERIAL_DOCUMENT_REQ_ITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MATERIAL_DOCUMENT_REQ_ITEM
*  INTO TABLE @DATA(IT_MATERIAL_DOCUMENT_REQ_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_MATERIAL_DOCUMENT_REQ_ITEM INDEX 1 INTO DATA(WA_MATERIAL_DOCUMENT_REQ_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MATERIAL_DOCUMENT_REQ_ITEM>-CONTROLLER = 1.
<MATERIAL_DOCUMENT_REQ_ITEM>-GOODS_MOVEMENT_TYPE = 1.
<MATERIAL_DOCUMENT_REQ_ITEM>-GOODS_RECIPIENT_NAME = 1.
<MATERIAL_DOCUMENT_REQ_ITEM>-MATERIAL_DOCUMENT_LINE = 1.
<MATERIAL_DOCUMENT_REQ_ITEM>-PARENT_MATERIAL_DOCUMENT_LINE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MATERIAL_DOCUMENT_REQ_ITEM-MATERIAL, sy-vline,
  WA_MATERIAL_DOCUMENT_REQ_ITEM-GLOBAL_TRADE_ITEM_NUMBER, sy-vline,
  WA_MATERIAL_DOCUMENT_REQ_ITEM-BATCH, sy-vline,
  WA_MATERIAL_DOCUMENT_REQ_ITEM-SERIAL_IDCREATE_AUTOMATIC_INDI, sy-vline,
  WA_MATERIAL_DOCUMENT_REQ_ITEM-PLANT, sy-vline,
  WA_MATERIAL_DOCUMENT_REQ_ITEM-STORAGE_LOCATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MATERIAL_DOCUMENT_REQ_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_MATERIAL_DOCUMENT_REQ_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_MATERIAL_DOCUMENT_REQ_ITEM INTO WA_MATERIAL_DOCUMENT_REQ_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_MATERIAL_DOCUMENT_REQ_ITEM_STR, 
CONTROLLER TYPE STRING,
GOODS_MOVEMENT_TYPE TYPE STRING,
GOODS_RECIPIENT_NAME TYPE STRING,
MATERIAL_DOCUMENT_LINE TYPE STRING,
PARENT_MATERIAL_DOCUMENT_LINE TYPE STRING,
MATERIAL TYPE STRING,
GLOBAL_TRADE_ITEM_NUMBER TYPE STRING,
BATCH TYPE STRING,
SERIAL_IDCREATE_AUTOMATIC_INDI TYPE STRING,
PLANT TYPE STRING,
STORAGE_LOCATION TYPE STRING,
SHELF_LIFE_EXPIRATION_DATE TYPE STRING,
MANUFACTURE_DATE TYPE STRING,
BATCH_BY_SUPPLIER TYPE STRING,
STOCK_TYPE TYPE STRING,
INVENTORY_SPECIAL_STOCK_TYPE TYPE STRING,
QUANTITY_IN_ENTRY_UNIT TYPE STRING,
CONTROLLER TYPE STRING,
UNIT_CODE TYPE STRING,
SAPUNIT_CODE TYPE STRING,
CONTENT TYPE STRING,
QUANTITY_IN_BASE_UNIT TYPE STRING,
CONTROLLER TYPE STRING,
UNIT_CODE TYPE STRING,
SAPUNIT_CODE TYPE STRING,
CONTENT TYPE STRING,
INVENTORY_VALUATION_TYPE TYPE STRING,
CUSTOMER TYPE STRING,
SUPPLIER TYPE STRING,
PURCHASE_ORDER TYPE STRING,
PURCHASE_ORDER_ITEM TYPE STRING,
SALES_ORDER TYPE STRING,
SALES_ORDER_ITEM TYPE STRING,
SALES_ORDER_ITEM_SCHEDULE_LINE TYPE STRING,
MANUFACTURING_ORDER TYPE STRING,
MANUFACTURING_ORDER_ITEM TYPE STRING,
DELIVERY TYPE STRING,
DELIVERY_ITEM TYPE STRING,
IS_COMPELETELY_DELIVERED TYPE STRING,
RESERVATION TYPE STRING,
RESERVATION_ITEM TYPE STRING,
RESERVATION_IS_FINALLY_ISSUED TYPE STRING,
PROJECT_NETWORK TYPE STRING,
GLACCOUNT TYPE STRING,
COST_CENTER TYPE STRING,
COST_OBJECT TYPE STRING,
PROFIT_CENTER TYPE STRING,
PROFITABILITY_SEGMENT TYPE STRING,
FUNCTIONAL_AREA TYPE STRING,
WBSELEMENT TYPE STRING,
UNLOADING_POINT_NAME TYPE STRING,
MATERIAL_DOCUMENT_ITEM_TEXT TYPE STRING,
GOODS_MOVEMENT_REF_DOC_TYPE TYPE STRING,
GOODS_MOVEMENT_REASON_CODE TYPE STRING,
ISSG_OR_RCVG_MATERIAL TYPE STRING,
ISSG_OR_RCVG_BATCH TYPE STRING,
ISSUING_OR_RECEIVING_PLANT TYPE STRING,
ISSUING_OR_RECEIVING_STORAGE_L TYPE STRING,
ISSUING_OR_RECEIVING_VAL_TYPE TYPE STRING,
MASTER_FIXED_ASSET TYPE STRING,
FIXED_ASSET TYPE STRING,
FUNDS_MANAGEMENT_CENTER TYPE STRING,
FUNDS_MANAGEMENT_FUND TYPE STRING,
COMMITMENT_ITEM TYPE STRING,
GRANT TYPE STRING,
INVTRY_MGMT_REFERENCE_DOCUMENT TYPE STRING,
REFERENCE_DOCUMENT_FISCAL_YEAR TYPE STRING,
INVTRY_MGMT_REF_DOCUMENT_ITEM TYPE STRING,
MATERIAL_DOCUMENT_POSTING_TYPE TYPE STRING,
SERIAL_NUMBERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MATERIAL_DOCUMENT_REQ_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_MATERIAL_DOCUMENT_REQ_ITEM_STR-CONTROLLER sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-GOODS_MOVEMENT_TYPE sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-GOODS_RECIPIENT_NAME sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-MATERIAL_DOCUMENT_LINE sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-PARENT_MATERIAL_DOCUMENT_LINE sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-MATERIAL sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-GLOBAL_TRADE_ITEM_NUMBER sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-BATCH sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-SERIAL_IDCREATE_AUTOMATIC_INDI sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-PLANT sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-STORAGE_LOCATION sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-SHELF_LIFE_EXPIRATION_DATE sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-MANUFACTURE_DATE sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-BATCH_BY_SUPPLIER sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-STOCK_TYPE sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-INVENTORY_SPECIAL_STOCK_TYPE sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-QUANTITY_IN_ENTRY_UNIT sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-CONTROLLER sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-UNIT_CODE sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-SAPUNIT_CODE sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-CONTENT sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-QUANTITY_IN_BASE_UNIT sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-CONTROLLER sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-UNIT_CODE sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-SAPUNIT_CODE sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-CONTENT sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-INVENTORY_VALUATION_TYPE sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-CUSTOMER sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-SUPPLIER sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-PURCHASE_ORDER sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-PURCHASE_ORDER_ITEM sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-SALES_ORDER sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-SALES_ORDER_ITEM sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-SALES_ORDER_ITEM_SCHEDULE_LINE sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-MANUFACTURING_ORDER sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-MANUFACTURING_ORDER_ITEM sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-DELIVERY sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-DELIVERY_ITEM sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-IS_COMPELETELY_DELIVERED sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-RESERVATION sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-RESERVATION_ITEM sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-RESERVATION_IS_FINALLY_ISSUED sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-PROJECT_NETWORK sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-GLACCOUNT sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-COST_CENTER sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-COST_OBJECT sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-PROFIT_CENTER sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-PROFITABILITY_SEGMENT sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-FUNCTIONAL_AREA sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-WBSELEMENT sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-UNLOADING_POINT_NAME sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-MATERIAL_DOCUMENT_ITEM_TEXT sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-GOODS_MOVEMENT_REF_DOC_TYPE sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-GOODS_MOVEMENT_REASON_CODE sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-ISSG_OR_RCVG_MATERIAL sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-ISSG_OR_RCVG_BATCH sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-ISSUING_OR_RECEIVING_PLANT sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-ISSUING_OR_RECEIVING_STORAGE_L sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-ISSUING_OR_RECEIVING_VAL_TYPE sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-MASTER_FIXED_ASSET sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-FIXED_ASSET sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-FUNDS_MANAGEMENT_CENTER sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-FUNDS_MANAGEMENT_FUND sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-COMMITMENT_ITEM sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-GRANT sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-INVTRY_MGMT_REFERENCE_DOCUMENT sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-REFERENCE_DOCUMENT_FISCAL_YEAR sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-INVTRY_MGMT_REF_DOCUMENT_ITEM sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-MATERIAL_DOCUMENT_POSTING_TYPE sy-vline 
WA_MATERIAL_DOCUMENT_REQ_ITEM_STR-SERIAL_NUMBERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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