ABAP Select data from SAP table PTWTAXITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PTWTAXITEM
*  INTO TABLE @DATA(IT_PTWTAXITEM2).
*--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_PTWTAXITEM INDEX 1 INTO DATA(WA_PTWTAXITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PTWTAXITEM>-MANDT = 1.
<PTWTAXITEM>-FORMATCODE = 1.
<PTWTAXITEM>-CONTROLLINGOBJECTTYPE = 1.
<PTWTAXITEM>-COMPANYCODE = 1.
<PTWTAXITEM>-ACCOUNTINGDOCUMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PTWTAXITEM-TAXITEM, sy-vline,
  WA_PTWTAXITEM-TAXCODE, sy-vline,
  WA_PTWTAXITEM-TAXGROUP, sy-vline,
  WA_PTWTAXITEM-TAXBOX, sy-vline,
  WA_PTWTAXITEM-TAXDECLNAMOUNTTYPE, sy-vline,
  WA_PTWTAXITEM-TRANSACTIONTYPEDETERMINATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PTWTAXITEM 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_PTWTAXITEM 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_PTWTAXITEM INTO WA_PTWTAXITEM.


*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_PTWTAXITEM-ACCOUNTINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTWTAXITEM-ACCOUNTINGDOCUMENT.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

*Conversion exit AU132, internal->external for field TAXAMOUNT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_PTWTAXITEM-TAXAMOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTWTAXITEM-TAXAMOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field TAXBASEAMOUNT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_PTWTAXITEM-TAXBASEAMOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTWTAXITEM-TAXBASEAMOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field TAXBASEAMOUNTINCOCODECRCY
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_PTWTAXITEM-TAXBASEAMOUNTINCOCODECRCY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTWTAXITEM-TAXBASEAMOUNTINCOCODECRCY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field TAXAMOUNTINCOCODECRCY
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_PTWTAXITEM-TAXAMOUNTINCOCODECRCY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PTWTAXITEM-TAXAMOUNTINCOCODECRCY.
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_PTWTAXITEM_STR, 
MANDT TYPE STRING,
FORMATCODE TYPE STRING,
CONTROLLINGOBJECTTYPE TYPE STRING,
COMPANYCODE TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
TAXITEM TYPE STRING,
TAXCODE TYPE STRING,
TAXGROUP TYPE STRING,
TAXBOX TYPE STRING,
TAXDECLNAMOUNTTYPE TYPE STRING,
TRANSACTIONTYPEDETERMINATION TYPE STRING,
DEBITCREDITCODE TYPE STRING,
REFERENCEDOCUMENTTYPE TYPE STRING,
LOGICALDOCUMENTCLASS TYPE STRING,
TAXREPORTINGDATE TYPE STRING,
TAXITEMGROUP TYPE STRING,
REPORTINGDATE TYPE STRING,
TAXRATE TYPE STRING,
TAXRATEVALIDITYSTARTDATE TYPE STRING,
STCD1 TYPE STRING,
TAXNUMBER1 TYPE STRING,
SELLERTAXID TYPE STRING,
NUMBERING TYPE STRING,
TWYEAR TYPE STRING,
TWMONTH TYPE STRING,
DOCUMENTDATE TYPE STRING,
POSTINGDATE TYPE STRING,
REFERENCENUMBER TYPE STRING,
ASSIGNMENTREFERENCE TYPE STRING,
REFERENCE1IDBYBUSINESSPARTNER TYPE STRING,
REFERENCE2IDBYBUSINESSPARTNER TYPE STRING,
REFERENCE3IDBYBUSINESSPARTNER TYPE STRING,
JRNLENTRYCNTRYSPECIFICREF3 TYPE STRING,
INCOMINGDATE TYPE STRING,
BUSINESSPLACE TYPE STRING,
BUSINESSPARTNER TYPE STRING,
TAXTYPE TYPE STRING,
SUPPLIER TYPE STRING,
CUSTOMER TYPE STRING,
SUPPLIERCOUNTRY TYPE STRING,
CUSTOMERCOUNTRY TYPE STRING,
BUYERGUID TYPE STRING,
TRIMBUYERGUID TYPE STRING,
NUMPG TYPE STRING,
TAXCATEGORY TYPE STRING,
DEDUCTIONTYPE TYPE STRING,
SPECIALTAXRATE TYPE STRING,
REMARK TYPE STRING,
REVERSED TYPE STRING,
ISREVERSAL TYPE STRING,
ISREVERSED TYPE STRING,
REVERSEDOCUMENT TYPE STRING,
REVERSEDOCUMENTFISCALYEAR TYPE STRING,
FISCALYEAR TYPE STRING,
ORIGINALDOCUMENT TYPE STRING,
ORIGINALDOCUMENTTWYEAR TYPE STRING,
REMARKATCUSTOM TYPE STRING,
CURRENCY TYPE STRING,
TAXAMOUNT TYPE STRING,
TAXBASEAMOUNT TYPE STRING,
TAXBASEAMOUNTINCOCODECRCY TYPE STRING,
TAXAMOUNTINCOCODECRCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PTWTAXITEM_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_PTWTAXITEM_STR-MANDT sy-vline 
WA_PTWTAXITEM_STR-FORMATCODE sy-vline 
WA_PTWTAXITEM_STR-CONTROLLINGOBJECTTYPE sy-vline 
WA_PTWTAXITEM_STR-COMPANYCODE sy-vline 
WA_PTWTAXITEM_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_PTWTAXITEM_STR-TAXITEM sy-vline 
WA_PTWTAXITEM_STR-TAXCODE sy-vline 
WA_PTWTAXITEM_STR-TAXGROUP sy-vline 
WA_PTWTAXITEM_STR-TAXBOX sy-vline 
WA_PTWTAXITEM_STR-TAXDECLNAMOUNTTYPE sy-vline 
WA_PTWTAXITEM_STR-TRANSACTIONTYPEDETERMINATION sy-vline 
WA_PTWTAXITEM_STR-DEBITCREDITCODE sy-vline 
WA_PTWTAXITEM_STR-REFERENCEDOCUMENTTYPE sy-vline 
WA_PTWTAXITEM_STR-LOGICALDOCUMENTCLASS sy-vline 
WA_PTWTAXITEM_STR-TAXREPORTINGDATE sy-vline 
WA_PTWTAXITEM_STR-TAXITEMGROUP sy-vline 
WA_PTWTAXITEM_STR-REPORTINGDATE sy-vline 
WA_PTWTAXITEM_STR-TAXRATE sy-vline 
WA_PTWTAXITEM_STR-TAXRATEVALIDITYSTARTDATE sy-vline 
WA_PTWTAXITEM_STR-STCD1 sy-vline 
WA_PTWTAXITEM_STR-TAXNUMBER1 sy-vline 
WA_PTWTAXITEM_STR-SELLERTAXID sy-vline 
WA_PTWTAXITEM_STR-NUMBERING sy-vline 
WA_PTWTAXITEM_STR-TWYEAR sy-vline 
WA_PTWTAXITEM_STR-TWMONTH sy-vline 
WA_PTWTAXITEM_STR-DOCUMENTDATE sy-vline 
WA_PTWTAXITEM_STR-POSTINGDATE sy-vline 
WA_PTWTAXITEM_STR-REFERENCENUMBER sy-vline 
WA_PTWTAXITEM_STR-ASSIGNMENTREFERENCE sy-vline 
WA_PTWTAXITEM_STR-REFERENCE1IDBYBUSINESSPARTNER sy-vline 
WA_PTWTAXITEM_STR-REFERENCE2IDBYBUSINESSPARTNER sy-vline 
WA_PTWTAXITEM_STR-REFERENCE3IDBYBUSINESSPARTNER sy-vline 
WA_PTWTAXITEM_STR-JRNLENTRYCNTRYSPECIFICREF3 sy-vline 
WA_PTWTAXITEM_STR-INCOMINGDATE sy-vline 
WA_PTWTAXITEM_STR-BUSINESSPLACE sy-vline 
WA_PTWTAXITEM_STR-BUSINESSPARTNER sy-vline 
WA_PTWTAXITEM_STR-TAXTYPE sy-vline 
WA_PTWTAXITEM_STR-SUPPLIER sy-vline 
WA_PTWTAXITEM_STR-CUSTOMER sy-vline 
WA_PTWTAXITEM_STR-SUPPLIERCOUNTRY sy-vline 
WA_PTWTAXITEM_STR-CUSTOMERCOUNTRY sy-vline 
WA_PTWTAXITEM_STR-BUYERGUID sy-vline 
WA_PTWTAXITEM_STR-TRIMBUYERGUID sy-vline 
WA_PTWTAXITEM_STR-NUMPG sy-vline 
WA_PTWTAXITEM_STR-TAXCATEGORY sy-vline 
WA_PTWTAXITEM_STR-DEDUCTIONTYPE sy-vline 
WA_PTWTAXITEM_STR-SPECIALTAXRATE sy-vline 
WA_PTWTAXITEM_STR-REMARK sy-vline 
WA_PTWTAXITEM_STR-REVERSED sy-vline 
WA_PTWTAXITEM_STR-ISREVERSAL sy-vline 
WA_PTWTAXITEM_STR-ISREVERSED sy-vline 
WA_PTWTAXITEM_STR-REVERSEDOCUMENT sy-vline 
WA_PTWTAXITEM_STR-REVERSEDOCUMENTFISCALYEAR sy-vline 
WA_PTWTAXITEM_STR-FISCALYEAR sy-vline 
WA_PTWTAXITEM_STR-ORIGINALDOCUMENT sy-vline 
WA_PTWTAXITEM_STR-ORIGINALDOCUMENTTWYEAR sy-vline 
WA_PTWTAXITEM_STR-REMARKATCUSTOM sy-vline 
WA_PTWTAXITEM_STR-CURRENCY sy-vline 
WA_PTWTAXITEM_STR-TAXAMOUNT sy-vline 
WA_PTWTAXITEM_STR-TAXBASEAMOUNT sy-vline 
WA_PTWTAXITEM_STR-TAXBASEAMOUNTINCOCODECRCY sy-vline 
WA_PTWTAXITEM_STR-TAXAMOUNTINCOCODECRCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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