ABAP Select data from SAP table /XFT/LIV_ST_INPUT_ATTRIBUTES into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /XFT/LIV_ST_INPUT_ATTRIBUTES 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 /XFT/LIV_ST_INPUT_ATTRIBUTES. 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 /XFT/LIV_ST_INPUT_ATTRIBUTES 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_/XFT/LIV_ST_INPUT_ATTRIBUTES TYPE STANDARD TABLE OF /XFT/LIV_ST_INPUT_ATTRIBUTES,
      WA_/XFT/LIV_ST_INPUT_ATTRIBUTES TYPE /XFT/LIV_ST_INPUT_ATTRIBUTES,
      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: </XFT/LIV_ST_INPUT_ATTRIBUTES> TYPE /XFT/LIV_ST_INPUT_ATTRIBUTES.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /XFT/LIV_ST_INPUT_ATTRIBUTES
  INTO TABLE IT_/XFT/LIV_ST_INPUT_ATTRIBUTES.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /XFT/LIV_ST_INPUT_ATTRIBUTES
*  INTO TABLE @DATA(IT_/XFT/LIV_ST_INPUT_ATTRIBUTES2).
*--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_/XFT/LIV_ST_INPUT_ATTRIBUTES INDEX 1 INTO DATA(WA_/XFT/LIV_ST_INPUT_ATTRIBUTES2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/XFT/LIV_ST_INPUT_ATTRIBUTES ASSIGNING </XFT/LIV_ST_INPUT_ATTRIBUTES>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</XFT/LIV_ST_INPUT_ATTRIBUTES>-INVOICE_NUMBER = 1.
</XFT/LIV_ST_INPUT_ATTRIBUTES>-INVOICE_POSITION = 1.
</XFT/LIV_ST_INPUT_ATTRIBUTES>-INVOICE_AMOUNT = 1.
</XFT/LIV_ST_INPUT_ATTRIBUTES>-INVOICE_DATE = 1.
</XFT/LIV_ST_INPUT_ATTRIBUTES>-NUMBER_OF_POSITION = 1.

ENDLOOP.

LOOP AT IT_/XFT/LIV_ST_INPUT_ATTRIBUTES INTO WA_/XFT/LIV_ST_INPUT_ATTRIBUTES.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/XFT/LIV_ST_INPUT_ATTRIBUTES-PREFIX_POSITION, sy-vline,
  WA_/XFT/LIV_ST_INPUT_ATTRIBUTES-AMOUNT_POSITION, sy-vline,
  WA_/XFT/LIV_ST_INPUT_ATTRIBUTES-TAX_AMOUNT, sy-vline,
  WA_/XFT/LIV_ST_INPUT_ATTRIBUTES-TAX_CODE, sy-vline,
  WA_/XFT/LIV_ST_INPUT_ATTRIBUTES-STOCK_DESCRIPTION, sy-vline,
  WA_/XFT/LIV_ST_INPUT_ATTRIBUTES-QUANTITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/XFT/LIV_ST_INPUT_ATTRIBUTES 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_/XFT/LIV_ST_INPUT_ATTRIBUTES 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_/XFT/LIV_ST_INPUT_ATTRIBUTES INTO WA_/XFT/LIV_ST_INPUT_ATTRIBUTES.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR, 
INVOICE_NUMBER TYPE STRING,
INVOICE_POSITION TYPE STRING,
INVOICE_AMOUNT TYPE STRING,
INVOICE_DATE TYPE STRING,
NUMBER_OF_POSITION TYPE STRING,
PREFIX_POSITION TYPE STRING,
AMOUNT_POSITION TYPE STRING,
TAX_AMOUNT TYPE STRING,
TAX_CODE TYPE STRING,
STOCK_DESCRIPTION TYPE STRING,
QUANTITY TYPE STRING,
UNIT TYPE STRING,
SUPPLIER_NAME TYPE STRING,
SUPPLIER_NUMBER TYPE STRING,
BANKNAME TYPE STRING,
ACCOUNT_NUMBER TYPE STRING,
BANK_CODE TYPE STRING,
VARIABLE_TEXT TYPE STRING,
ATTR1 TYPE STRING,
ATTR2 TYPE STRING,
ATTR3 TYPE STRING,
ATTR4 TYPE STRING,
ATTR5 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_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_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-INVOICE_NUMBER sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-INVOICE_POSITION sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-INVOICE_AMOUNT sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-INVOICE_DATE sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-NUMBER_OF_POSITION sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-PREFIX_POSITION sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-AMOUNT_POSITION sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-TAX_AMOUNT sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-TAX_CODE sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-STOCK_DESCRIPTION sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-QUANTITY sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-UNIT sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-SUPPLIER_NAME sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-SUPPLIER_NUMBER sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-BANKNAME sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-ACCOUNT_NUMBER sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-BANK_CODE sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-VARIABLE_TEXT sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-ATTR1 sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-ATTR2 sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-ATTR3 sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-ATTR4 sy-vline 
WA_/XFT/LIV_ST_INPUT_ATTRIBUTES_STR-ATTR5 sy-vline      INTO ld_text SEPARATED BY SPACE.

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