ABAP Select data from SAP table MMPUR_SSP_RETDL_ODATA_ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MMPUR_SSP_RETDL_ODATA_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 MMPUR_SSP_RETDL_ODATA_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 MMPUR_SSP_RETDL_ODATA_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_MMPUR_SSP_RETDL_ODATA_ITEM TYPE STANDARD TABLE OF MMPUR_SSP_RETDL_ODATA_ITEM,
      WA_MMPUR_SSP_RETDL_ODATA_ITEM TYPE MMPUR_SSP_RETDL_ODATA_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: <MMPUR_SSP_RETDL_ODATA_ITEM> TYPE MMPUR_SSP_RETDL_ODATA_ITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_SSP_RETDL_ODATA_ITEM
*  INTO TABLE @DATA(IT_MMPUR_SSP_RETDL_ODATA_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_MMPUR_SSP_RETDL_ODATA_ITEM INDEX 1 INTO DATA(WA_MMPUR_SSP_RETDL_ODATA_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_SSP_RETDL_ODATA_ITEM>-BASEUNIT = 1.
<MMPUR_SSP_RETDL_ODATA_ITEM>-CREATEDBYUSER = 1.
<MMPUR_SSP_RETDL_ODATA_ITEM>-CREATIONDATE = 1.
<MMPUR_SSP_RETDL_ODATA_ITEM>-DOCUMENTCURRENCY = 1.
<MMPUR_SSP_RETDL_ODATA_ITEM>-EXTCOMPANYCODEFORPURG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_SSP_RETDL_ODATA_ITEM-MATERIALNAME, sy-vline,
  WA_MMPUR_SSP_RETDL_ODATA_ITEM-MATERIAL, sy-vline,
  WA_MMPUR_SSP_RETDL_ODATA_ITEM-NETAMOUNT, sy-vline,
  WA_MMPUR_SSP_RETDL_ODATA_ITEM-NETPRICEAMOUNT, sy-vline,
  WA_MMPUR_SSP_RETDL_ODATA_ITEM-NETPRICEQUANTITY, sy-vline,
  WA_MMPUR_SSP_RETDL_ODATA_ITEM-ORDERPRICEUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_SSP_RETDL_ODATA_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_MMPUR_SSP_RETDL_ODATA_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_MMPUR_SSP_RETDL_ODATA_ITEM INTO WA_MMPUR_SSP_RETDL_ODATA_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_MMPUR_SSP_RETDL_ODATA_ITEM_STR, 
BASEUNIT TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
EXTCOMPANYCODEFORPURG TYPE STRING,
MATERIALNAME TYPE STRING,
MATERIAL TYPE STRING,
NETAMOUNT TYPE STRING,
NETPRICEAMOUNT TYPE STRING,
NETPRICEQUANTITY TYPE STRING,
ORDERPRICEUNIT TYPE STRING,
ORDERQUANTITYUNIT TYPE STRING,
PURCHASEORDERQUANTITYUNIT TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
PURCHASEREQUISITIONITEMTEXT TYPE STRING,
PURCHASEREQUISITIONTYPE TYPE STRING,
PURCHASINGDOCUMENT TYPE STRING,
PURCHASINGDOCUMENTDELETIONCODE TYPE STRING,
PURCHASINGDOCUMENTITEM TYPE STRING,
REASONFORRETURN TYPE STRING,
RETURNDELIVERY TYPE STRING,
RETURNQUANTITY TYPE STRING,
ROUGHGOODSRECEIPTQTY TYPE STRING,
SCHEDULELINE TYPE STRING,
SUPPLIER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_SSP_RETDL_ODATA_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_MMPUR_SSP_RETDL_ODATA_ITEM_STR-BASEUNIT sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-CREATEDBYUSER sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-CREATIONDATE sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-DOCUMENTCURRENCY sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-EXTCOMPANYCODEFORPURG sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-MATERIALNAME sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-MATERIAL sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-NETAMOUNT sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-NETPRICEAMOUNT sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-NETPRICEQUANTITY sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-ORDERPRICEUNIT sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-ORDERQUANTITYUNIT sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-PURCHASEORDERQUANTITYUNIT sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-PURCHASEREQUISITION sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-PURCHASEREQUISITIONITEMTEXT sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-PURCHASEREQUISITIONTYPE sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-PURCHASINGDOCUMENT sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-PURCHASINGDOCUMENTDELETIONCODE sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-PURCHASINGDOCUMENTITEM sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-REASONFORRETURN sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-RETURNDELIVERY sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-RETURNQUANTITY sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-ROUGHGOODSRECEIPTQTY sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-SCHEDULELINE sy-vline 
WA_MMPUR_SSP_RETDL_ODATA_ITEM_STR-SUPPLIER sy-vline      INTO ld_text SEPARATED BY SPACE.

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