ABAP Select data from SAP table FICNTAXS_INPUT_DECLN_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FICNTAXS_INPUT_DECLN_ITEM
*  INTO TABLE @DATA(IT_FICNTAXS_INPUT_DECLN_ITEM2).
*--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_FICNTAXS_INPUT_DECLN_ITEM INDEX 1 INTO DATA(WA_FICNTAXS_INPUT_DECLN_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FICNTAXS_INPUT_DECLN_ITEM>-DECLN_SMMRY_UUID = 1.
<FICNTAXS_INPUT_DECLN_ITEM>-DECLN_YEAR = 1.
<FICNTAXS_INPUT_DECLN_ITEM>-DECLN_MONTH = 1.
<FICNTAXS_INPUT_DECLN_ITEM>-TAX_INVC_CODE = 1.
<FICNTAXS_INPUT_DECLN_ITEM>-TAX_INVC_NMBR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FICNTAXS_INPUT_DECLN_ITEM-TAX_INVC_TYPE, sy-vline,
  WA_FICNTAXS_INPUT_DECLN_ITEM-SELLER_REGN_NMBR, sy-vline,
  WA_FICNTAXS_INPUT_DECLN_ITEM-GLDNTX_SYST_STS, sy-vline,
  WA_FICNTAXS_INPUT_DECLN_ITEM-GLDNTX_SYST_STS_TEXT, sy-vline,
  WA_FICNTAXS_INPUT_DECLN_ITEM-TAX_INVC_PROCG_STS, sy-vline,
  WA_FICNTAXS_INPUT_DECLN_ITEM-TAX_INVC_PROCG_STS_TEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FICNTAXS_INPUT_DECLN_ITEM 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_FICNTAXS_INPUT_DECLN_ITEM 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_FICNTAXS_INPUT_DECLN_ITEM INTO WA_FICNTAXS_INPUT_DECLN_ITEM.


*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 AC172, internal->external for field NET_AMT
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_FICNTAXS_INPUT_DECLN_ITEM-NET_AMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FICNTAXS_INPUT_DECLN_ITEM-NET_AMT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU172, internal->external for field TOT_AMT
CALL FUNCTION 'CONVERSION_EXIT_AU172_OUTPUT'
  EXPORTING
    input =                      WA_FICNTAXS_INPUT_DECLN_ITEM-TOT_AMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FICNTAXS_INPUT_DECLN_ITEM-TOT_AMT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SISTS, internal->external for field SUPPLIER_INVC_STS
CALL FUNCTION 'CONVERSION_EXIT_SISTS_OUTPUT'
  EXPORTING
    input =                      WA_FICNTAXS_INPUT_DECLN_ITEM-SUPPLIER_INVC_STS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FICNTAXS_INPUT_DECLN_ITEM-SUPPLIER_INVC_STS.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit AC152, internal->external for field DEDUCT_AMT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_FICNTAXS_INPUT_DECLN_ITEM-DEDUCT_AMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FICNTAXS_INPUT_DECLN_ITEM-DEDUCT_AMT.
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_FICNTAXS_INPUT_DECLN_ITEM_STR, 
DECLN_SMMRY_UUID TYPE STRING,
DECLN_YEAR TYPE STRING,
DECLN_MONTH TYPE STRING,
TAX_INVC_CODE TYPE STRING,
TAX_INVC_NMBR TYPE STRING,
TAX_INVC_TYPE TYPE STRING,
SELLER_REGN_NMBR TYPE STRING,
GLDNTX_SYST_STS TYPE STRING,
GLDNTX_SYST_STS_TEXT TYPE STRING,
TAX_INVC_PROCG_STS TYPE STRING,
TAX_INVC_PROCG_STS_TEXT TYPE STRING,
CRCY_CODE TYPE STRING,
NET_AMT TYPE STRING,
TOT_AMT TYPE STRING,
DECLN_ITEM_STS TYPE STRING,
DECLN_ITEM_UUID TYPE STRING,
SUPPLIER_INVC_COUNTS TYPE STRING,
DECLN_DEADLINE TYPE STRING,
SUPPLIER_INVC_STS TYPE STRING,
SUPPLIER_INVC_STS_TEXT TYPE STRING,
INVOICE_DATE TYPE STRING,
TAX_AMT TYPE STRING,
SUPPLIER TYPE STRING,
REMAINING_DAYS TYPE STRING,
TAX_INVC_UUID TYPE STRING,
COMPANY_CODE TYPE STRING,
CNTAX_ENTITY_ID TYPE STRING,
LIST_TYPE TYPE STRING,
FISCAL_YEAR TYPE STRING,
DECLN_STATUS TYPE STRING,
CONFIRMED_USER TYPE STRING,
CONFIRMED_TIME TYPE STRING,
REF_DOCS TYPE STRING,
SELLER_NAME TYPE STRING,
CONFIRMED_USERNAME TYPE STRING,
TAX_INVC_TYPE_TEXT TYPE STRING,
CN_TAXINVCUUID TYPE STRING,
DRAFTUUID TYPE STRING,
ISACTIVEENTITY TYPE STRING,
PREFERREDMODE TYPE STRING,
DEDUCT_AMT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FICNTAXS_INPUT_DECLN_ITEM_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_FICNTAXS_INPUT_DECLN_ITEM_STR-DECLN_SMMRY_UUID sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-DECLN_YEAR sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-DECLN_MONTH sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-TAX_INVC_CODE sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-TAX_INVC_NMBR sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-TAX_INVC_TYPE sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-SELLER_REGN_NMBR sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-GLDNTX_SYST_STS sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-GLDNTX_SYST_STS_TEXT sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-TAX_INVC_PROCG_STS sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-TAX_INVC_PROCG_STS_TEXT sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-CRCY_CODE sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-NET_AMT sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-TOT_AMT sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-DECLN_ITEM_STS sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-DECLN_ITEM_UUID sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-SUPPLIER_INVC_COUNTS sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-DECLN_DEADLINE sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-SUPPLIER_INVC_STS sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-SUPPLIER_INVC_STS_TEXT sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-INVOICE_DATE sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-TAX_AMT sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-SUPPLIER sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-REMAINING_DAYS sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-TAX_INVC_UUID sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-COMPANY_CODE sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-CNTAX_ENTITY_ID sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-LIST_TYPE sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-FISCAL_YEAR sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-DECLN_STATUS sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-CONFIRMED_USER sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-CONFIRMED_TIME sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-REF_DOCS sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-SELLER_NAME sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-CONFIRMED_USERNAME sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-TAX_INVC_TYPE_TEXT sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-CN_TAXINVCUUID sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-DRAFTUUID sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-ISACTIVEENTITY sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-PREFERREDMODE sy-vline 
WA_FICNTAXS_INPUT_DECLN_ITEM_STR-DEDUCT_AMT sy-vline      INTO ld_text SEPARATED BY SPACE.

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