ABAP Select data from SAP table FITR_S_INPUT_VAT_LINES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FITR_S_INPUT_VAT_LINES
*  INTO TABLE @DATA(IT_FITR_S_INPUT_VAT_LINES2).
*--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_FITR_S_INPUT_VAT_LINES INDEX 1 INTO DATA(WA_FITR_S_INPUT_VAT_LINES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FITR_S_INPUT_VAT_LINES>-SERNO = 1.
<FITR_S_INPUT_VAT_LINES>-PURDATE = 1.
<FITR_S_INPUT_VAT_LINES>-SERNUM = 1.
<FITR_S_INPUT_VAT_LINES>-SEQNUM = 1.
<FITR_S_INPUT_VAT_LINES>-VENDORNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FITR_S_INPUT_VAT_LINES-TAXNUM, sy-vline,
  WA_FITR_S_INPUT_VAT_LINES-TYPEOFMATERIAL, sy-vline,
  WA_FITR_S_INPUT_VAT_LINES-QUANTITY, sy-vline,
  WA_FITR_S_INPUT_VAT_LINES-BASEAMOUNT, sy-vline,
  WA_FITR_S_INPUT_VAT_LINES-VATAMOUNT, sy-vline,
  WA_FITR_S_INPUT_VAT_LINES-CUST_FRM_NO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FITR_S_INPUT_VAT_LINES 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_FITR_S_INPUT_VAT_LINES 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_FITR_S_INPUT_VAT_LINES INTO WA_FITR_S_INPUT_VAT_LINES.


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

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

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

*Conversion exit ALPHA, internal->external for field DOCUMENTNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FITR_S_INPUT_VAT_LINES-DOCUMENTNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FITR_S_INPUT_VAT_LINES-DOCUMENTNUM.
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_FITR_S_INPUT_VAT_LINES_STR, 
SERNO TYPE STRING,
PURDATE TYPE STRING,
SERNUM TYPE STRING,
SEQNUM TYPE STRING,
VENDORNAME TYPE STRING,
TAXNUM TYPE STRING,
TYPEOFMATERIAL TYPE STRING,
QUANTITY TYPE STRING,
BASEAMOUNT TYPE STRING,
VATAMOUNT TYPE STRING,
CUST_FRM_NO TYPE STRING,
FISCALYEAR TYPE STRING,
DOCUMENTNUM TYPE STRING,
CURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FITR_S_INPUT_VAT_LINES_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_FITR_S_INPUT_VAT_LINES_STR-SERNO sy-vline 
WA_FITR_S_INPUT_VAT_LINES_STR-PURDATE sy-vline 
WA_FITR_S_INPUT_VAT_LINES_STR-SERNUM sy-vline 
WA_FITR_S_INPUT_VAT_LINES_STR-SEQNUM sy-vline 
WA_FITR_S_INPUT_VAT_LINES_STR-VENDORNAME sy-vline 
WA_FITR_S_INPUT_VAT_LINES_STR-TAXNUM sy-vline 
WA_FITR_S_INPUT_VAT_LINES_STR-TYPEOFMATERIAL sy-vline 
WA_FITR_S_INPUT_VAT_LINES_STR-QUANTITY sy-vline 
WA_FITR_S_INPUT_VAT_LINES_STR-BASEAMOUNT sy-vline 
WA_FITR_S_INPUT_VAT_LINES_STR-VATAMOUNT sy-vline 
WA_FITR_S_INPUT_VAT_LINES_STR-CUST_FRM_NO sy-vline 
WA_FITR_S_INPUT_VAT_LINES_STR-FISCALYEAR sy-vline 
WA_FITR_S_INPUT_VAT_LINES_STR-DOCUMENTNUM sy-vline 
WA_FITR_S_INPUT_VAT_LINES_STR-CURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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