ABAP Select data from SAP table MMPUR_S_CNTRLPURCONTR_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_S_CNTRLPURCONTR_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_S_CNTRLPURCONTR_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_S_CNTRLPURCONTR_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_S_CNTRLPURCONTR_ITEM TYPE STANDARD TABLE OF MMPUR_S_CNTRLPURCONTR_ITEM,
      WA_MMPUR_S_CNTRLPURCONTR_ITEM TYPE MMPUR_S_CNTRLPURCONTR_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_S_CNTRLPURCONTR_ITEM> TYPE MMPUR_S_CNTRLPURCONTR_ITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_S_CNTRLPURCONTR_ITEM
*  INTO TABLE @DATA(IT_MMPUR_S_CNTRLPURCONTR_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_S_CNTRLPURCONTR_ITEM INDEX 1 INTO DATA(WA_MMPUR_S_CNTRLPURCONTR_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_S_CNTRLPURCONTR_ITEM>-CENTRALPURCHASECONTRACTITEM = 1.
<MMPUR_S_CNTRLPURCONTR_ITEM>-CENTRALPURCHASECONTRACT = 1.
<MMPUR_S_CNTRLPURCONTR_ITEM>-PURCHASINGCENTRALMATERIAL = 1.
<MMPUR_S_CNTRLPURCONTR_ITEM>-CNTRLPURCONTRACTITEMTEXT = 1.
<MMPUR_S_CNTRLPURCONTR_ITEM>-CONTRACTNETPRICEAMOUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_S_CNTRLPURCONTR_ITEM-ORDERPRICEUNIT, sy-vline,
  WA_MMPUR_S_CNTRLPURCONTR_ITEM-ORDERQUANTITYUNIT, sy-vline,
  WA_MMPUR_S_CNTRLPURCONTR_ITEM-MATERIALGROUP, sy-vline,
  WA_MMPUR_S_CNTRLPURCONTR_ITEM-REFERENCEDELIVERYADDRESSID, sy-vline,
  WA_MMPUR_S_CNTRLPURCONTR_ITEM-MANUALDELIVERYADDRESSID, sy-vline,
  WA_MMPUR_S_CNTRLPURCONTR_ITEM-ACCOUNTASSIGNMENTCATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_S_CNTRLPURCONTR_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_S_CNTRLPURCONTR_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_S_CNTRLPURCONTR_ITEM INTO WA_MMPUR_S_CNTRLPURCONTR_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.

*Conversion exit ALPHA, internal->external for field CENTRALPURCHASECONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_S_CNTRLPURCONTR_ITEM-CENTRALPURCHASECONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_S_CNTRLPURCONTR_ITEM-CENTRALPURCHASECONTRACT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field PURCHASINGCENTRALMATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_S_CNTRLPURCONTR_ITEM-PURCHASINGCENTRALMATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_S_CNTRLPURCONTR_ITEM-PURCHASINGCENTRALMATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ORDERPRICEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_S_CNTRLPURCONTR_ITEM-ORDERPRICEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_S_CNTRLPURCONTR_ITEM-ORDERPRICEUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ORDERQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_S_CNTRLPURCONTR_ITEM-ORDERQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_S_CNTRLPURCONTR_ITEM-ORDERQUANTITYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REFERENCEDELIVERYADDRESSID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_S_CNTRLPURCONTR_ITEM-REFERENCEDELIVERYADDRESSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_S_CNTRLPURCONTR_ITEM-REFERENCEDELIVERYADDRESSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MANUALDELIVERYADDRESSID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_S_CNTRLPURCONTR_ITEM-MANUALDELIVERYADDRESSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_S_CNTRLPURCONTR_ITEM-MANUALDELIVERYADDRESSID.
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_MMPUR_S_CNTRLPURCONTR_ITEM_STR, 
CENTRALPURCHASECONTRACTITEM TYPE STRING,
CENTRALPURCHASECONTRACT TYPE STRING,
PURCHASINGCENTRALMATERIAL TYPE STRING,
CNTRLPURCONTRACTITEMTEXT TYPE STRING,
CONTRACTNETPRICEAMOUNT TYPE STRING,
ORDERPRICEUNIT TYPE STRING,
ORDERQUANTITYUNIT TYPE STRING,
MATERIALGROUP TYPE STRING,
REFERENCEDELIVERYADDRESSID TYPE STRING,
MANUALDELIVERYADDRESSID TYPE STRING,
ACCOUNTASSIGNMENTCATEGORY TYPE STRING,
GOODSRECEIPTISEXPECTED TYPE STRING,
NETPRICEQUANTITY TYPE STRING,
MULTIPLEACCTASSGMTDISTRIBUTION TYPE STRING,
TARGETQUANTITY TYPE STRING,
CNTRLPURCONTRITMTARGETAMOUNT TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
ORDPRICEUNITTOORDERUNITDNMNTR TYPE STRING,
ORDERPRICEUNITTOORDERUNITNMRTR TYPE STRING,
PURCHASINGDOCUMENTITEMCATEGORY TYPE STRING,
SUPPLIERMATERIALNUMBER TYPE STRING,
EVALDRCPTSETTLMTISALLOWED TYPE STRING,
UNDERDELIVTOLRTDLMTRATIOINPCT TYPE STRING,
PRICEISTOBEPRINTED TYPE STRING,
SUPPLIERCONFIRMATIONCONTROLKEY TYPE STRING,
OVERDELIVTOLRTDLMTRATIOINPCT TYPE STRING,
UNLIMITEDOVERDELIVERYISALLOWED TYPE STRING,
INVOICEISEXPECTED TYPE STRING,
INVOICEISGOODSRECEIPTBASED TYPE STRING,
PURGDOCORDERACKNNUMBER TYPE STRING,
ISINFOATREGISTRATION TYPE STRING,
NODAYSREMINDER1 TYPE STRING,
NODAYSREMINDER2 TYPE STRING,
NODAYSREMINDER3 TYPE STRING,
STOCKTYPE TYPE STRING,
TAXCODE TYPE STRING,
REQUIREMENTTRACKING TYPE STRING,
ISORDERACKNRQD TYPE STRING,
SHIPPINGINSTRUCTION TYPE STRING,
GOODSRECEIPTISNONVALUATED TYPE STRING,
PRODUCTTYPE TYPE STRING,
ISDELETED TYPE STRING,
DUMMY_EKPO_INCL_EEW_PS TYPE STRING,
DISTRIBUTIONS TYPE STRING,
CONDITIONS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_S_CNTRLPURCONTR_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_S_CNTRLPURCONTR_ITEM_STR-CENTRALPURCHASECONTRACTITEM sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-CENTRALPURCHASECONTRACT sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-PURCHASINGCENTRALMATERIAL sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-CNTRLPURCONTRACTITEMTEXT sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-CONTRACTNETPRICEAMOUNT sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-ORDERPRICEUNIT sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-ORDERQUANTITYUNIT sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-MATERIALGROUP sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-REFERENCEDELIVERYADDRESSID sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-MANUALDELIVERYADDRESSID sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-ACCOUNTASSIGNMENTCATEGORY sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-GOODSRECEIPTISEXPECTED sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-NETPRICEQUANTITY sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-MULTIPLEACCTASSGMTDISTRIBUTION sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-TARGETQUANTITY sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-CNTRLPURCONTRITMTARGETAMOUNT sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-DOCUMENTCURRENCY sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-ORDPRICEUNITTOORDERUNITDNMNTR sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-ORDERPRICEUNITTOORDERUNITNMRTR sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-PURCHASINGDOCUMENTITEMCATEGORY sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-SUPPLIERMATERIALNUMBER sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-EVALDRCPTSETTLMTISALLOWED sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-UNDERDELIVTOLRTDLMTRATIOINPCT sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-PRICEISTOBEPRINTED sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-SUPPLIERCONFIRMATIONCONTROLKEY sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-OVERDELIVTOLRTDLMTRATIOINPCT sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-UNLIMITEDOVERDELIVERYISALLOWED sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-INVOICEISEXPECTED sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-INVOICEISGOODSRECEIPTBASED sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-PURGDOCORDERACKNNUMBER sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-ISINFOATREGISTRATION sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-NODAYSREMINDER1 sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-NODAYSREMINDER2 sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-NODAYSREMINDER3 sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-STOCKTYPE sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-TAXCODE sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-REQUIREMENTTRACKING sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-ISORDERACKNRQD sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-SHIPPINGINSTRUCTION sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-GOODSRECEIPTISNONVALUATED sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-PRODUCTTYPE sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-ISDELETED sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-DUMMY_EKPO_INCL_EEW_PS sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-DISTRIBUTIONS sy-vline 
WA_MMPUR_S_CNTRLPURCONTR_ITEM_STR-CONDITIONS sy-vline      INTO ld_text SEPARATED BY SPACE.

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