ABAP Select data from SAP table MMPUR_DOCLST_POITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MMPUR_DOCLST_POITEM 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_DOCLST_POITEM. 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_DOCLST_POITEM 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_DOCLST_POITEM TYPE STANDARD TABLE OF MMPUR_DOCLST_POITEM,
      WA_MMPUR_DOCLST_POITEM TYPE MMPUR_DOCLST_POITEM,
      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_DOCLST_POITEM> TYPE MMPUR_DOCLST_POITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_DOCLST_POITEM
*  INTO TABLE @DATA(IT_MMPUR_DOCLST_POITEM2).
*--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_DOCLST_POITEM INDEX 1 INTO DATA(WA_MMPUR_DOCLST_POITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_DOCLST_POITEM>-GENERATED_ID = 1.
<MMPUR_DOCLST_POITEM>-PURGDOCUMENTTYPEDESCRIPTION = 1.
<MMPUR_DOCLST_POITEM>-PURCHASEORDERDATE = 1.
<MMPUR_DOCLST_POITEM>-PURCHASIEORDERPRICEUNIT = 1.
<MMPUR_DOCLST_POITEM>-PURCHASINGDOCUMENTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_DOCLST_POITEM-COMPANYCODE, sy-vline,
  WA_MMPUR_DOCLST_POITEM-COMPANYCODENAME, sy-vline,
  WA_MMPUR_DOCLST_POITEM-CNT, sy-vline,
  WA_MMPUR_DOCLST_POITEM-CNTF, sy-vline,
  WA_MMPUR_DOCLST_POITEM-CNTK, sy-vline,
  WA_MMPUR_DOCLST_POITEM-CNTL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_DOCLST_POITEM 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_DOCLST_POITEM 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_DOCLST_POITEM INTO WA_MMPUR_DOCLST_POITEM.


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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field SERVICEPERFORMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MMPUR_DOCLST_POITEM-SERVICEPERFORMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMPUR_DOCLST_POITEM-SERVICEPERFORMER.
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_DOCLST_POITEM_STR, 
GENERATED_ID TYPE STRING,
PURGDOCUMENTTYPEDESCRIPTION TYPE STRING,
PURCHASEORDERDATE TYPE STRING,
PURCHASIEORDERPRICEUNIT TYPE STRING,
PURCHASINGDOCUMENTTYPE TYPE STRING,
COMPANYCODE TYPE STRING,
COMPANYCODENAME TYPE STRING,
CNT TYPE STRING,
CNTF TYPE STRING,
CNTK TYPE STRING,
CNTL TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASINGGROUPNAME TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGORGANISATIONNAME TYPE STRING,
MFRPARTNUMBER TYPE STRING,
CREATEDBYUSER TYPE STRING,
ACCTASSIGNMENTCATEGORY TYPE STRING,
ACCTASSIGNMENTCATEGORYNAME TYPE STRING,
SUPPLIER TYPE STRING,
ISDELETEDHEADER TYPE STRING,
ISDELETEDITEM TYPE STRING,
MATERIALNAME TYPE STRING,
MATERIALGROUP TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASEORDERITEMCATEGORY TYPE STRING,
PURCHASEORDERITEMCATEGORYNAME TYPE STRING,
MATERIAL TYPE STRING,
MANUFACTURERMATERIAL TYPE STRING,
PURCHASEORDERQUANTITYUNIT TYPE STRING,
PURCHASEORDERQUANTITY TYPE STRING,
SUPPLIERNAME TYPE STRING,
PLANTNAME TYPE STRING,
PURCHASEORDERNETPRICEAMOUNT TYPE STRING,
PURCHASEORDERNETAMOUNT TYPE STRING,
PURCHASEORDERNETPRICEQUANTITY TYPE STRING,
QUANTITYMISMATCH TYPE STRING,
RELEASEQUANTITY TYPE STRING,
RELEASEVALUE TYPE STRING,
INVOICERECEIPTQUANTITY TYPE STRING,
SUPPLYINGPLANT TYPE STRING,
SUPPLYINGPLANTNAME TYPE STRING,
INVOICERECEIPTVALUE TYPE STRING,
STATUS TYPE STRING,
STATUSTEXT TYPE STRING,
PURCHASEORDERITEMTEXT TYPE STRING,
UID TYPE STRING,
VALUEMISMATCH TYPE STRING,
CURRENCY TYPE STRING,
GOODSRECEIPTQUANTITY TYPE STRING,
PLANT TYPE STRING,
GOODSRECEIPTVALUE TYPE STRING,
MATERIALGROUPNAME TYPE STRING,
EXCHANGERATE TYPE STRING,
PAYMENTTERMS TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,
WBSELEMENTEXTERNALID TYPE STRING,
WBSDESCRIPTION TYPE STRING,
SALESORDER TYPE STRING,
SALESORDERITEM TYPE STRING,
COSTCENTER TYPE STRING,
COSTCENTERNAME TYPE STRING,
CONTROLLINGAREA TYPE STRING,
WORKPACKAGEFULLNAME TYPE STRING,
SUPPLIERADDRESSCOUNTRY TYPE STRING,
SUPPLIERADDRESSCOUNTRYNAME TYPE STRING,
SUPPLIERADDRESSCITY TYPE STRING,
POSTGR TYPE STRING,
WEIGHTEDRELEVANCE TYPE STRING,
SERVICEPERFORMER TYPE STRING,
SERVICEPERFORMERNAME TYPE STRING,
DELIVERYDATE TYPE STRING,
WORKITEM TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
DUMMY_EKKO_INCL_EEW_TR TYPE STRING,
DUMMY_EKKO_INCL_EEW_PS TYPE STRING,
DUMMY_EKPO_INCL_EEW_TR TYPE STRING,
DUMMY_EKPO_INCL_EEW_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_DOCLST_POITEM_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_DOCLST_POITEM_STR-GENERATED_ID sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURGDOCUMENTTYPEDESCRIPTION sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASEORDERDATE sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASIEORDERPRICEUNIT sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASINGDOCUMENTTYPE sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-COMPANYCODE sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-COMPANYCODENAME sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-CNT sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-CNTF sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-CNTK sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-CNTL sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASEORDER sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASEORDERITEM sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASINGGROUP sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASINGGROUPNAME sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASINGORGANIZATION sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASINGORGANISATIONNAME sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-MFRPARTNUMBER sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-CREATEDBYUSER sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-ACCTASSIGNMENTCATEGORY sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-ACCTASSIGNMENTCATEGORYNAME sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-SUPPLIER sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-ISDELETEDHEADER sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-ISDELETEDITEM sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-MATERIALNAME sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-MATERIALGROUP sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASEORDERITEMCATEGORY sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASEORDERITEMCATEGORYNAME sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-MATERIAL sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-MANUFACTURERMATERIAL sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASEORDERQUANTITYUNIT sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASEORDERQUANTITY sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-SUPPLIERNAME sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PLANTNAME sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASEORDERNETPRICEAMOUNT sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASEORDERNETAMOUNT sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASEORDERNETPRICEQUANTITY sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-QUANTITYMISMATCH sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-RELEASEQUANTITY sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-RELEASEVALUE sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-INVOICERECEIPTQUANTITY sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-SUPPLYINGPLANT sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-SUPPLYINGPLANTNAME sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-INVOICERECEIPTVALUE sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-STATUS sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-STATUSTEXT sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PURCHASEORDERITEMTEXT sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-UID sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-VALUEMISMATCH sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-CURRENCY sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-GOODSRECEIPTQUANTITY sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PLANT sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-GOODSRECEIPTVALUE sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-MATERIALGROUPNAME sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-EXCHANGERATE sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-PAYMENTTERMS sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-WBSELEMENTINTERNALID sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-WBSELEMENTEXTERNALID sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-WBSDESCRIPTION sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-SALESORDER sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-SALESORDERITEM sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-COSTCENTER sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-COSTCENTERNAME sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-CONTROLLINGAREA sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-WORKPACKAGEFULLNAME sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-SUPPLIERADDRESSCOUNTRY sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-SUPPLIERADDRESSCOUNTRYNAME sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-SUPPLIERADDRESSCITY sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-POSTGR sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-WEIGHTEDRELEVANCE sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-SERVICEPERFORMER sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-SERVICEPERFORMERNAME sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-DELIVERYDATE sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-WORKITEM sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-DOCUMENTCURRENCY sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-DUMMY_EKKO_INCL_EEW_TR sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-DUMMY_EKKO_INCL_EEW_PS sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-DUMMY_EKPO_INCL_EEW_TR sy-vline 
WA_MMPUR_DOCLST_POITEM_STR-DUMMY_EKPO_INCL_EEW_PS sy-vline      INTO ld_text SEPARATED BY SPACE.

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