ABAP Select data from SAP table IDUNNINGENTRITM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDUNNINGENTRITM
*  INTO TABLE @DATA(IT_IDUNNINGENTRITM2).
*--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_IDUNNINGENTRITM INDEX 1 INTO DATA(WA_IDUNNINGENTRITM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDUNNINGENTRITM>-MANDT = 1.
<IDUNNINGENTRITM>-DUNNINGRUNDATE = 1.
<IDUNNINGENTRITM>-DUNNINGRUN = 1.
<IDUNNINGENTRITM>-FINANCIALACCOUNTTYPE = 1.
<IDUNNINGENTRITM>-COMPANYCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDUNNINGENTRITM-CUSTOMER, sy-vline,
  WA_IDUNNINGENTRITM-SUPPLIER, sy-vline,
  WA_IDUNNINGENTRITM-ONETIMEACCTBANKACCOUNT, sy-vline,
  WA_IDUNNINGENTRITM-CUSTOMERHEADOFFICE, sy-vline,
  WA_IDUNNINGENTRITM-GROUPINGDUNNINGAREA, sy-vline,
  WA_IDUNNINGENTRITM-GROUPINGDUNNINGLEVEL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDUNNINGENTRITM 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_IDUNNINGENTRITM 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_IDUNNINGENTRITM INTO WA_IDUNNINGENTRITM.


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

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

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

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

*Conversion exit GJAHR, internal->external for field FISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IDUNNINGENTRITM-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDUNNINGENTRITM-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit GJAHR, internal->external for field INVOICEREFERENCEFISCALYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IDUNNINGENTRITM-INVOICEREFERENCEFISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDUNNINGENTRITM-INVOICEREFERENCEFISCALYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TREASURYCONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDUNNINGENTRITM-TREASURYCONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDUNNINGENTRITM-TREASURYCONTRACT.
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_IDUNNINGENTRITM_STR, 
MANDT TYPE STRING,
DUNNINGRUNDATE TYPE STRING,
DUNNINGRUN TYPE STRING,
FINANCIALACCOUNTTYPE TYPE STRING,
COMPANYCODE TYPE STRING,
CUSTOMER TYPE STRING,
SUPPLIER TYPE STRING,
ONETIMEACCTBANKACCOUNT TYPE STRING,
CUSTOMERHEADOFFICE TYPE STRING,
GROUPINGDUNNINGAREA TYPE STRING,
GROUPINGDUNNINGLEVEL TYPE STRING,
REFERENCEDOCUMENTCOMPANYCODE TYPE STRING,
JOURNALENTRY TYPE STRING,
FISCALYEAR TYPE STRING,
JOURNALENTRYITEM TYPE STRING,
BUSINESSAREA TYPE STRING,
DOCUMENTREFERENCEID TYPE STRING,
POSTINGDATE TYPE STRING,
DOCUMENTDATE TYPE STRING,
ACCOUNTINGDOCUMENTCREATIONDATE TYPE STRING,
DUECALCULATIONBASEDATE TYPE STRING,
NETDUEDATE TYPE STRING,
ACCOUNTINGDOCUMENTTYPE TYPE STRING,
POSTINGKEY TYPE STRING,
DUNNINGKEY TYPE STRING,
DUNNINGBLOCKINGREASON TYPE STRING,
DUNNINGAREA TYPE STRING,
LASTDUNNINGDATE TYPE STRING,
OLDDUNNINGLEVEL TYPE STRING,
DUNNINGLEVEL TYPE STRING,
PAYMENTBLOCKINGREASON TYPE STRING,
DUNNINGITEMISPAYABLE TYPE STRING,
NETDUEARREARSDAYS TYPE STRING,
SPECIALGLTRANSACTIONTYPE TYPE STRING,
SPECIALGLCODE TYPE STRING,
DEBITCREDITCODE TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
AMOUNTINCOMPANYCODECURRENCY TYPE STRING,
AMOUNTINTRANSACTIONCURRENCY TYPE STRING,
BRANCHACCOUNT TYPE STRING,
SALESORGANIZATION TYPE STRING,
DISTRIBUTIONCHANNEL TYPE STRING,
DIVISION TYPE STRING,
INVOICEREFERENCE TYPE STRING,
INVOICEREFERENCEFISCALYEAR TYPE STRING,
INVOICEITEMREFERENCE TYPE STRING,
TREASURYCONTRACT TYPE STRING,
TREASURYCONTRACTTYPE TYPE STRING,
SUPPLIERPAYMENTMETHOD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDUNNINGENTRITM_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_IDUNNINGENTRITM_STR-MANDT sy-vline 
WA_IDUNNINGENTRITM_STR-DUNNINGRUNDATE sy-vline 
WA_IDUNNINGENTRITM_STR-DUNNINGRUN sy-vline 
WA_IDUNNINGENTRITM_STR-FINANCIALACCOUNTTYPE sy-vline 
WA_IDUNNINGENTRITM_STR-COMPANYCODE sy-vline 
WA_IDUNNINGENTRITM_STR-CUSTOMER sy-vline 
WA_IDUNNINGENTRITM_STR-SUPPLIER sy-vline 
WA_IDUNNINGENTRITM_STR-ONETIMEACCTBANKACCOUNT sy-vline 
WA_IDUNNINGENTRITM_STR-CUSTOMERHEADOFFICE sy-vline 
WA_IDUNNINGENTRITM_STR-GROUPINGDUNNINGAREA sy-vline 
WA_IDUNNINGENTRITM_STR-GROUPINGDUNNINGLEVEL sy-vline 
WA_IDUNNINGENTRITM_STR-REFERENCEDOCUMENTCOMPANYCODE sy-vline 
WA_IDUNNINGENTRITM_STR-JOURNALENTRY sy-vline 
WA_IDUNNINGENTRITM_STR-FISCALYEAR sy-vline 
WA_IDUNNINGENTRITM_STR-JOURNALENTRYITEM sy-vline 
WA_IDUNNINGENTRITM_STR-BUSINESSAREA sy-vline 
WA_IDUNNINGENTRITM_STR-DOCUMENTREFERENCEID sy-vline 
WA_IDUNNINGENTRITM_STR-POSTINGDATE sy-vline 
WA_IDUNNINGENTRITM_STR-DOCUMENTDATE sy-vline 
WA_IDUNNINGENTRITM_STR-ACCOUNTINGDOCUMENTCREATIONDATE sy-vline 
WA_IDUNNINGENTRITM_STR-DUECALCULATIONBASEDATE sy-vline 
WA_IDUNNINGENTRITM_STR-NETDUEDATE sy-vline 
WA_IDUNNINGENTRITM_STR-ACCOUNTINGDOCUMENTTYPE sy-vline 
WA_IDUNNINGENTRITM_STR-POSTINGKEY sy-vline 
WA_IDUNNINGENTRITM_STR-DUNNINGKEY sy-vline 
WA_IDUNNINGENTRITM_STR-DUNNINGBLOCKINGREASON sy-vline 
WA_IDUNNINGENTRITM_STR-DUNNINGAREA sy-vline 
WA_IDUNNINGENTRITM_STR-LASTDUNNINGDATE sy-vline 
WA_IDUNNINGENTRITM_STR-OLDDUNNINGLEVEL sy-vline 
WA_IDUNNINGENTRITM_STR-DUNNINGLEVEL sy-vline 
WA_IDUNNINGENTRITM_STR-PAYMENTBLOCKINGREASON sy-vline 
WA_IDUNNINGENTRITM_STR-DUNNINGITEMISPAYABLE sy-vline 
WA_IDUNNINGENTRITM_STR-NETDUEARREARSDAYS sy-vline 
WA_IDUNNINGENTRITM_STR-SPECIALGLTRANSACTIONTYPE sy-vline 
WA_IDUNNINGENTRITM_STR-SPECIALGLCODE sy-vline 
WA_IDUNNINGENTRITM_STR-DEBITCREDITCODE sy-vline 
WA_IDUNNINGENTRITM_STR-TRANSACTIONCURRENCY sy-vline 
WA_IDUNNINGENTRITM_STR-AMOUNTINCOMPANYCODECURRENCY sy-vline 
WA_IDUNNINGENTRITM_STR-AMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_IDUNNINGENTRITM_STR-BRANCHACCOUNT sy-vline 
WA_IDUNNINGENTRITM_STR-SALESORGANIZATION sy-vline 
WA_IDUNNINGENTRITM_STR-DISTRIBUTIONCHANNEL sy-vline 
WA_IDUNNINGENTRITM_STR-DIVISION sy-vline 
WA_IDUNNINGENTRITM_STR-INVOICEREFERENCE sy-vline 
WA_IDUNNINGENTRITM_STR-INVOICEREFERENCEFISCALYEAR sy-vline 
WA_IDUNNINGENTRITM_STR-INVOICEITEMREFERENCE sy-vline 
WA_IDUNNINGENTRITM_STR-TREASURYCONTRACT sy-vline 
WA_IDUNNINGENTRITM_STR-TREASURYCONTRACTTYPE sy-vline 
WA_IDUNNINGENTRITM_STR-SUPPLIERPAYMENTMETHOD sy-vline      INTO ld_text SEPARATED BY SPACE.

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