ABAP Select data from SAP table FAC_DZTAXDEC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FAC_DZTAXDEC
*  INTO TABLE @DATA(IT_FAC_DZTAXDEC2).
*--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_FAC_DZTAXDEC INDEX 1 INTO DATA(WA_FAC_DZTAXDEC2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FAC_DZTAXDEC-FISCALPERIOD, sy-vline,
  WA_FAC_DZTAXDEC-POSTINGDATE, sy-vline,
  WA_FAC_DZTAXDEC-TAXCODE, sy-vline,
  WA_FAC_DZTAXDEC-TAXCALCULATIONPROCEDURE, sy-vline,
  WA_FAC_DZTAXDEC-GLACCOUNT, sy-vline,
  WA_FAC_DZTAXDEC-TAXITEMGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FAC_DZTAXDEC 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_FAC_DZTAXDEC 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_FAC_DZTAXDEC INTO WA_FAC_DZTAXDEC.


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

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

*Conversion exit ALPHA, internal->external for field GLACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FAC_DZTAXDEC-GLACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FAC_DZTAXDEC-GLACCOUNT.
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_FAC_DZTAXDEC_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
FISCALYEAR TYPE STRING,
TAXITEM TYPE STRING,
FISCALPERIOD TYPE STRING,
POSTINGDATE TYPE STRING,
TAXCODE TYPE STRING,
TAXCALCULATIONPROCEDURE TYPE STRING,
GLACCOUNT TYPE STRING,
TAXITEMGROUP TYPE STRING,
TAXBASEAMOUNTINCOCODECRCY TYPE STRING,
TAXBASEAMOUNTINTRANSCRCY TYPE STRING,
TAXAMOUNTINCOCODECRCY TYPE STRING,
TAXAMOUNT TYPE STRING,
TRANSACTIONTYPEDETERMINATION TYPE STRING,
CONDITIONRECORD TYPE STRING,
VATREGISTRATION TYPE STRING,
DESTINATIONCOUNTRY TYPE STRING,
SUPPLYINGCOUNTRY TYPE STRING,
TAXJURISDICTION TYPE STRING,
TAXAMOUNTINADDITIONALCURRENCY1 TYPE STRING,
TAXAMOUNTINADDITIONALCURRENCY2 TYPE STRING,
TAXBASEAMTINADDITIONALCRCY1 TYPE STRING,
TAXBASEAMTINADDITIONALCRCY2 TYPE STRING,
CONDITIONTYPE TYPE STRING,
TAXRETURNDATE TYPE STRING,
TAXRETURNEXECUTIONTIME TYPE STRING,
TAXREPORTINGDATE TYPE STRING,
TAXRATE TYPE STRING,
TAXRETURNCOUNTRY TYPE STRING,
TAXAMOUNTINCOUNTRYCRCY TYPE STRING,
TAXBASEAMOUNTINCOUNTRYCRCY TYPE STRING,
TAXDETERMINATIONDATE TYPE STRING,
BUSINESSPLACE TYPE STRING,
LOWESTLEVELTAXJURISDICTION TYPE STRING,
TAXJURISDICTIONLEVEL TYPE STRING,
TAXITEMACCTGDOCITEMREF TYPE STRING,
TAXRESULTMANUALMODIFICATION TYPE STRING,
DEBITCREDITCODE TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
COMPANYCODECOUNTRY TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
ADDITIONALCURRENCY1 TYPE STRING,
ADDITIONALCURRENCY2 TYPE STRING,
COUNTRYCURRENCY TYPE STRING,
TAXRATEVALIDITYSTARTDATE TYPE STRING,
TAXCOUNTRY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FAC_DZTAXDEC_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_FAC_DZTAXDEC_STR-MANDT sy-vline 
WA_FAC_DZTAXDEC_STR-COMPANYCODE sy-vline 
WA_FAC_DZTAXDEC_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_FAC_DZTAXDEC_STR-FISCALYEAR sy-vline 
WA_FAC_DZTAXDEC_STR-TAXITEM sy-vline 
WA_FAC_DZTAXDEC_STR-FISCALPERIOD sy-vline 
WA_FAC_DZTAXDEC_STR-POSTINGDATE sy-vline 
WA_FAC_DZTAXDEC_STR-TAXCODE sy-vline 
WA_FAC_DZTAXDEC_STR-TAXCALCULATIONPROCEDURE sy-vline 
WA_FAC_DZTAXDEC_STR-GLACCOUNT sy-vline 
WA_FAC_DZTAXDEC_STR-TAXITEMGROUP sy-vline 
WA_FAC_DZTAXDEC_STR-TAXBASEAMOUNTINCOCODECRCY sy-vline 
WA_FAC_DZTAXDEC_STR-TAXBASEAMOUNTINTRANSCRCY sy-vline 
WA_FAC_DZTAXDEC_STR-TAXAMOUNTINCOCODECRCY sy-vline 
WA_FAC_DZTAXDEC_STR-TAXAMOUNT sy-vline 
WA_FAC_DZTAXDEC_STR-TRANSACTIONTYPEDETERMINATION sy-vline 
WA_FAC_DZTAXDEC_STR-CONDITIONRECORD sy-vline 
WA_FAC_DZTAXDEC_STR-VATREGISTRATION sy-vline 
WA_FAC_DZTAXDEC_STR-DESTINATIONCOUNTRY sy-vline 
WA_FAC_DZTAXDEC_STR-SUPPLYINGCOUNTRY sy-vline 
WA_FAC_DZTAXDEC_STR-TAXJURISDICTION sy-vline 
WA_FAC_DZTAXDEC_STR-TAXAMOUNTINADDITIONALCURRENCY1 sy-vline 
WA_FAC_DZTAXDEC_STR-TAXAMOUNTINADDITIONALCURRENCY2 sy-vline 
WA_FAC_DZTAXDEC_STR-TAXBASEAMTINADDITIONALCRCY1 sy-vline 
WA_FAC_DZTAXDEC_STR-TAXBASEAMTINADDITIONALCRCY2 sy-vline 
WA_FAC_DZTAXDEC_STR-CONDITIONTYPE sy-vline 
WA_FAC_DZTAXDEC_STR-TAXRETURNDATE sy-vline 
WA_FAC_DZTAXDEC_STR-TAXRETURNEXECUTIONTIME sy-vline 
WA_FAC_DZTAXDEC_STR-TAXREPORTINGDATE sy-vline 
WA_FAC_DZTAXDEC_STR-TAXRATE sy-vline 
WA_FAC_DZTAXDEC_STR-TAXRETURNCOUNTRY sy-vline 
WA_FAC_DZTAXDEC_STR-TAXAMOUNTINCOUNTRYCRCY sy-vline 
WA_FAC_DZTAXDEC_STR-TAXBASEAMOUNTINCOUNTRYCRCY sy-vline 
WA_FAC_DZTAXDEC_STR-TAXDETERMINATIONDATE sy-vline 
WA_FAC_DZTAXDEC_STR-BUSINESSPLACE sy-vline 
WA_FAC_DZTAXDEC_STR-LOWESTLEVELTAXJURISDICTION sy-vline 
WA_FAC_DZTAXDEC_STR-TAXJURISDICTIONLEVEL sy-vline 
WA_FAC_DZTAXDEC_STR-TAXITEMACCTGDOCITEMREF sy-vline 
WA_FAC_DZTAXDEC_STR-TAXRESULTMANUALMODIFICATION sy-vline 
WA_FAC_DZTAXDEC_STR-DEBITCREDITCODE sy-vline 
WA_FAC_DZTAXDEC_STR-COMPANYCODECURRENCY sy-vline 
WA_FAC_DZTAXDEC_STR-COMPANYCODECOUNTRY sy-vline 
WA_FAC_DZTAXDEC_STR-DOCUMENTCURRENCY sy-vline 
WA_FAC_DZTAXDEC_STR-ADDITIONALCURRENCY1 sy-vline 
WA_FAC_DZTAXDEC_STR-ADDITIONALCURRENCY2 sy-vline 
WA_FAC_DZTAXDEC_STR-COUNTRYCURRENCY sy-vline 
WA_FAC_DZTAXDEC_STR-TAXRATEVALIDITYSTARTDATE sy-vline 
WA_FAC_DZTAXDEC_STR-TAXCOUNTRY sy-vline      INTO ld_text SEPARATED BY SPACE.

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