ABAP Select data from SAP table FIAR_PURCHASE_IMPORT_VAT_CRDT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIAR_PURCHASE_IMPORT_VAT_CRDT
*  INTO TABLE @DATA(IT_FIAR_PURCHASE_IMPORT_VAT_CRDT2).
*--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_FIAR_PURCHASE_IMPORT_VAT_CRDT INDEX 1 INTO DATA(WA_FIAR_PURCHASE_IMPORT_VAT_CRDT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIAR_PURCHASE_IMPORT_VAT_CRDT>-BUKRS = 1.
<FIAR_PURCHASE_IMPORT_VAT_CRDT>-DOC_NUM = 1.
<FIAR_PURCHASE_IMPORT_VAT_CRDT>-GJAHR = 1.
<FIAR_PURCHASE_IMPORT_VAT_CRDT>-POST_DATE = 1.
<FIAR_PURCHASE_IMPORT_VAT_CRDT>-DOCTYP_CATG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIAR_PURCHASE_IMPORT_VAT_CRDT-DESCRIPTION, sy-vline,
  WA_FIAR_PURCHASE_IMPORT_VAT_CRDT-OFF_DOC_NUM, sy-vline,
  WA_FIAR_PURCHASE_IMPORT_VAT_CRDT-DOC_DATE, sy-vline,
  WA_FIAR_PURCHASE_IMPORT_VAT_CRDT-ORG_CURR_AMNT, sy-vline,
  WA_FIAR_PURCHASE_IMPORT_VAT_CRDT-CURR_CODE, sy-vline,
  WA_FIAR_PURCHASE_IMPORT_VAT_CRDT-EXCH_RATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIAR_PURCHASE_IMPORT_VAT_CRDT 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_FIAR_PURCHASE_IMPORT_VAT_CRDT 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_FIAR_PURCHASE_IMPORT_VAT_CRDT INTO WA_FIAR_PURCHASE_IMPORT_VAT_CRDT.


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

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

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

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

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

*Conversion exit AC152, internal->external for field VAT_COMP_AMNT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_FIAR_PURCHASE_IMPORT_VAT_CRDT-VAT_COMP_AMNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAR_PURCHASE_IMPORT_VAT_CRDT-VAT_COMP_AMNT.
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_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR, 
BUKRS TYPE STRING,
DOC_NUM TYPE STRING,
GJAHR TYPE STRING,
POST_DATE TYPE STRING,
DOCTYP_CATG TYPE STRING,
DESCRIPTION TYPE STRING,
OFF_DOC_NUM TYPE STRING,
DOC_DATE TYPE STRING,
ORG_CURR_AMNT TYPE STRING,
CURR_CODE TYPE STRING,
EXCH_RATE TYPE STRING,
ACCOUNT_NO TYPE STRING,
VENDOR_CUIT TYPE STRING,
VENDOR_NIF TYPE STRING,
VENDOR_NAME TYPE STRING,
VAT_RATE TYPE STRING,
VAT_DATE TYPE STRING,
VAT_AMNT TYPE STRING,
VAT_COMP_AMNT TYPE STRING,
ID_PAYMENT TYPE STRING,
CUIT_PAYMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_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_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-BUKRS sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-DOC_NUM sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-GJAHR sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-POST_DATE sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-DOCTYP_CATG sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-DESCRIPTION sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-OFF_DOC_NUM sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-DOC_DATE sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-ORG_CURR_AMNT sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-CURR_CODE sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-EXCH_RATE sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-ACCOUNT_NO sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-VENDOR_CUIT sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-VENDOR_NIF sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-VENDOR_NAME sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-VAT_RATE sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-VAT_DATE sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-VAT_AMNT sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-VAT_COMP_AMNT sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-ID_PAYMENT sy-vline 
WA_FIAR_PURCHASE_IMPORT_VAT_CRDT_STR-CUIT_PAYMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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