ABAP Select data from SAP table CMMPURITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMMPURITEM
*  INTO TABLE @DATA(IT_CMMPURITEM2).
*--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_CMMPURITEM INDEX 1 INTO DATA(WA_CMMPURITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMMPURITEM>-MANDT = 1.
<CMMPURITEM>-PURCHASECONTRACT = 1.
<CMMPURITEM>-PURCHASECONTRACTITEM = 1.
<CMMPURITEM>-PURCHASINGDOCUMENTITEM = 1.
<CMMPURITEM>-PURCHASECONTRACTITEMTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMMPURITEM-MATERIAL, sy-vline,
  WA_CMMPURITEM-TARGETQUANTITY, sy-vline,
  WA_CMMPURITEM-ORDERPRICEUNIT, sy-vline,
  WA_CMMPURITEM-TARGETAMOUNT, sy-vline,
  WA_CMMPURITEM-PURGDOCRELEASEORDERQUANTITY, sy-vline,
  WA_CMMPURITEM-SUPPLIERMATERIALNUMBER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMMPURITEM 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_CMMPURITEM 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_CMMPURITEM INTO WA_CMMPURITEM.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field MANUFACTURER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMMPURITEM-MANUFACTURER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMPURITEM-MANUFACTURER.
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_CMMPURITEM_STR, 
MANDT TYPE STRING,
PURCHASECONTRACT TYPE STRING,
PURCHASECONTRACTITEM TYPE STRING,
PURCHASINGDOCUMENTITEM TYPE STRING,
PURCHASECONTRACTITEMTEXT TYPE STRING,
MATERIAL TYPE STRING,
TARGETQUANTITY TYPE STRING,
ORDERPRICEUNIT TYPE STRING,
TARGETAMOUNT TYPE STRING,
PURGDOCRELEASEORDERQUANTITY TYPE STRING,
SUPPLIERMATERIALNUMBER TYPE STRING,
PLANT TYPE STRING,
MULTIPLEACCTASSGMTDISTRIBUTION TYPE STRING,
ORDERQUANTITYUNIT TYPE STRING,
NETPRICEQUANTITY TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
GOODSRECIPIENTNAME TYPE STRING,
NETPRICEAMOUNT TYPE STRING,
MANUFACTURERMATERIAL TYPE STRING,
MANUFACTURERPARTNMBR TYPE STRING,
MANUFACTURER TYPE STRING,
PURGCONFIGURABLEITEMNUMBER TYPE STRING,
PURGEXTERNALSORTNUMBER TYPE STRING,
PURCHASINGPARENTITEM TYPE STRING,
PURGDOCAGGRGDSUBITEMCATEGORY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMMPURITEM_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_CMMPURITEM_STR-MANDT sy-vline 
WA_CMMPURITEM_STR-PURCHASECONTRACT sy-vline 
WA_CMMPURITEM_STR-PURCHASECONTRACTITEM sy-vline 
WA_CMMPURITEM_STR-PURCHASINGDOCUMENTITEM sy-vline 
WA_CMMPURITEM_STR-PURCHASECONTRACTITEMTEXT sy-vline 
WA_CMMPURITEM_STR-MATERIAL sy-vline 
WA_CMMPURITEM_STR-TARGETQUANTITY sy-vline 
WA_CMMPURITEM_STR-ORDERPRICEUNIT sy-vline 
WA_CMMPURITEM_STR-TARGETAMOUNT sy-vline 
WA_CMMPURITEM_STR-PURGDOCRELEASEORDERQUANTITY sy-vline 
WA_CMMPURITEM_STR-SUPPLIERMATERIALNUMBER sy-vline 
WA_CMMPURITEM_STR-PLANT sy-vline 
WA_CMMPURITEM_STR-MULTIPLEACCTASSGMTDISTRIBUTION sy-vline 
WA_CMMPURITEM_STR-ORDERQUANTITYUNIT sy-vline 
WA_CMMPURITEM_STR-NETPRICEQUANTITY sy-vline 
WA_CMMPURITEM_STR-DOCUMENTCURRENCY sy-vline 
WA_CMMPURITEM_STR-GOODSRECIPIENTNAME sy-vline 
WA_CMMPURITEM_STR-NETPRICEAMOUNT sy-vline 
WA_CMMPURITEM_STR-MANUFACTURERMATERIAL sy-vline 
WA_CMMPURITEM_STR-MANUFACTURERPARTNMBR sy-vline 
WA_CMMPURITEM_STR-MANUFACTURER sy-vline 
WA_CMMPURITEM_STR-PURGCONFIGURABLEITEMNUMBER sy-vline 
WA_CMMPURITEM_STR-PURGEXTERNALSORTNUMBER sy-vline 
WA_CMMPURITEM_STR-PURCHASINGPARENTITEM sy-vline 
WA_CMMPURITEM_STR-PURGDOCAGGRGDSUBITEMCATEGORY sy-vline      INTO ld_text SEPARATED BY SPACE.

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