ABAP Select data from SAP table PTDOCITEMWTCD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTDOCITEMWTCD
*  INTO TABLE @DATA(IT_PTDOCITEMWTCD2).
*--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_PTDOCITEMWTCD INDEX 1 INTO DATA(WA_PTDOCITEMWTCD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTDOCITEMWTCD>-MANDT = 1.
<PTDOCITEMWTCD>-ACCOUNTINGDOCUMENT = 1.
<PTDOCITEMWTCD>-COMPANYCODE = 1.
<PTDOCITEMWTCD>-FISCALYEAR = 1.
<PTDOCITEMWTCD>-ACCOUNTINGDOCUMENTITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTDOCITEMWTCD-POSTINGDATE, sy-vline,
  WA_PTDOCITEMWTCD-DOCUMENTDATE, sy-vline,
  WA_PTDOCITEMWTCD-CUSTOMER, sy-vline,
  WA_PTDOCITEMWTCD-SUPPLIER, sy-vline,
  WA_PTDOCITEMWTCD-DEBITCREDITCODE, sy-vline,
  WA_PTDOCITEMWTCD-WITHHOLDINGTAXCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTDOCITEMWTCD 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_PTDOCITEMWTCD 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_PTDOCITEMWTCD INTO WA_PTDOCITEMWTCD.


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

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

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

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

*Conversion exit AC172, internal->external for field AMOUNTINREPORTINGCURRENCY
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_PTDOCITEMWTCD-AMOUNTINREPORTINGCURRENCY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTDOCITEMWTCD-AMOUNTINREPORTINGCURRENCY.
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_PTDOCITEMWTCD_STR, 
MANDT TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
COMPANYCODE TYPE STRING,
FISCALYEAR TYPE STRING,
ACCOUNTINGDOCUMENTITEM TYPE STRING,
POSTINGDATE TYPE STRING,
DOCUMENTDATE TYPE STRING,
CUSTOMER TYPE STRING,
SUPPLIER TYPE STRING,
DEBITCREDITCODE TYPE STRING,
WITHHOLDINGTAXCODE TYPE STRING,
BALANCETRANSACTIONCURRENCY TYPE STRING,
ACCOUNTINGDOCUMENTTYPE TYPE STRING,
WITHHOLDINGTAXAMOUNT TYPE STRING,
CASHDISCOUNTAMTINCOCODECRCY TYPE STRING,
CASHDISCOUNTAMOUNT TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
ISSALESRELATED TYPE STRING,
AMOUNTINCOMPANYCODECURRENCY TYPE STRING,
FINANCIALACCOUNTTYPE TYPE STRING,
AMOUNTINREPORTINGCURRENCY TYPE STRING,
REPORTINGVATREGISTRATION TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
VATREGISTRATIONCOUNTRY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTDOCITEMWTCD_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_PTDOCITEMWTCD_STR-MANDT sy-vline 
WA_PTDOCITEMWTCD_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_PTDOCITEMWTCD_STR-COMPANYCODE sy-vline 
WA_PTDOCITEMWTCD_STR-FISCALYEAR sy-vline 
WA_PTDOCITEMWTCD_STR-ACCOUNTINGDOCUMENTITEM sy-vline 
WA_PTDOCITEMWTCD_STR-POSTINGDATE sy-vline 
WA_PTDOCITEMWTCD_STR-DOCUMENTDATE sy-vline 
WA_PTDOCITEMWTCD_STR-CUSTOMER sy-vline 
WA_PTDOCITEMWTCD_STR-SUPPLIER sy-vline 
WA_PTDOCITEMWTCD_STR-DEBITCREDITCODE sy-vline 
WA_PTDOCITEMWTCD_STR-WITHHOLDINGTAXCODE sy-vline 
WA_PTDOCITEMWTCD_STR-BALANCETRANSACTIONCURRENCY sy-vline 
WA_PTDOCITEMWTCD_STR-ACCOUNTINGDOCUMENTTYPE sy-vline 
WA_PTDOCITEMWTCD_STR-WITHHOLDINGTAXAMOUNT sy-vline 
WA_PTDOCITEMWTCD_STR-CASHDISCOUNTAMTINCOCODECRCY sy-vline 
WA_PTDOCITEMWTCD_STR-CASHDISCOUNTAMOUNT sy-vline 
WA_PTDOCITEMWTCD_STR-TRANSACTIONCURRENCY sy-vline 
WA_PTDOCITEMWTCD_STR-ISSALESRELATED sy-vline 
WA_PTDOCITEMWTCD_STR-AMOUNTINCOMPANYCODECURRENCY sy-vline 
WA_PTDOCITEMWTCD_STR-FINANCIALACCOUNTTYPE sy-vline 
WA_PTDOCITEMWTCD_STR-AMOUNTINREPORTINGCURRENCY sy-vline 
WA_PTDOCITEMWTCD_STR-REPORTINGVATREGISTRATION sy-vline 
WA_PTDOCITEMWTCD_STR-COMPANYCODECURRENCY sy-vline 
WA_PTDOCITEMWTCD_STR-VATREGISTRATIONCOUNTRY sy-vline      INTO ld_text SEPARATED BY SPACE.

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