ABAP Select data from SAP table FIAR_ASSIGNMENT_NOTE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FIAR_ASSIGNMENT_NOTE 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_ASSIGNMENT_NOTE. 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_ASSIGNMENT_NOTE 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_ASSIGNMENT_NOTE TYPE STANDARD TABLE OF FIAR_ASSIGNMENT_NOTE,
      WA_FIAR_ASSIGNMENT_NOTE TYPE FIAR_ASSIGNMENT_NOTE,
      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_ASSIGNMENT_NOTE> TYPE FIAR_ASSIGNMENT_NOTE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIAR_ASSIGNMENT_NOTE
*  INTO TABLE @DATA(IT_FIAR_ASSIGNMENT_NOTE2).
*--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_ASSIGNMENT_NOTE INDEX 1 INTO DATA(WA_FIAR_ASSIGNMENT_NOTE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIAR_ASSIGNMENT_NOTE>-COMPANY_NAME1 = 1.
<FIAR_ASSIGNMENT_NOTE>-COMPANY_NAME2 = 1.
<FIAR_ASSIGNMENT_NOTE>-COMPANY_NAME3 = 1.
<FIAR_ASSIGNMENT_NOTE>-COCO_ADRESS = 1.
<FIAR_ASSIGNMENT_NOTE>-COCO_CITY_NAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIAR_ASSIGNMENT_NOTE-COCO_POSTAL_CODE, sy-vline,
  WA_FIAR_ASSIGNMENT_NOTE-DOCUMENT_DATE, sy-vline,
  WA_FIAR_ASSIGNMENT_NOTE-CUSTOMER_NAME, sy-vline,
  WA_FIAR_ASSIGNMENT_NOTE-CUSTOMER_ADDRESS, sy-vline,
  WA_FIAR_ASSIGNMENT_NOTE-CUSTOMER_CITY_NAME, sy-vline,
  WA_FIAR_ASSIGNMENT_NOTE-CUSTOMER_POSTAL_CODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIAR_ASSIGNMENT_NOTE 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_ASSIGNMENT_NOTE 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_ASSIGNMENT_NOTE INTO WA_FIAR_ASSIGNMENT_NOTE.


*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 TAX_BASE_AMOUNT
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_FIAR_ASSIGNMENT_NOTE-TAX_BASE_AMOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAR_ASSIGNMENT_NOTE-TAX_BASE_AMOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FIAR_ASSIGNMENT_NOTE-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAR_ASSIGNMENT_NOTE-UNIT.
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_ASSIGNMENT_NOTE_STR, 
COMPANY_NAME1 TYPE STRING,
COMPANY_NAME2 TYPE STRING,
COMPANY_NAME3 TYPE STRING,
COCO_ADRESS TYPE STRING,
COCO_CITY_NAME TYPE STRING,
COCO_POSTAL_CODE TYPE STRING,
DOCUMENT_DATE TYPE STRING,
CUSTOMER_NAME TYPE STRING,
CUSTOMER_ADDRESS TYPE STRING,
CUSTOMER_CITY_NAME TYPE STRING,
CUSTOMER_POSTAL_CODE TYPE STRING,
TAX_TYPE_DESC TYPE STRING,
TAX_NUMBER TYPE STRING,
TAX_RATE TYPE STRING,
UNITARY_AMOUNT TYPE STRING,
TOTAL_AMOUNT TYPE STRING,
TAX_BASE_AMOUNT TYPE STRING,
TAX_AMOUNT TYPE STRING,
LOCAL_CURRENCY TYPE STRING,
QUANTITY TYPE STRING,
UNIT TYPE STRING,
TITLE TYPE STRING,
TEXT1 TYPE STRING,
TEXT2 TYPE STRING,
TEXT3 TYPE STRING,
TEXT4 TYPE STRING,
TEXT5 TYPE STRING,
TEXT6 TYPE STRING,
TEXT7 TYPE STRING,
TEXT8 TYPE STRING,
TEXT9 TYPE STRING,
TEXT10 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIAR_ASSIGNMENT_NOTE_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_ASSIGNMENT_NOTE_STR-COMPANY_NAME1 sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-COMPANY_NAME2 sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-COMPANY_NAME3 sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-COCO_ADRESS sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-COCO_CITY_NAME sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-COCO_POSTAL_CODE sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-DOCUMENT_DATE sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-CUSTOMER_NAME sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-CUSTOMER_ADDRESS sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-CUSTOMER_CITY_NAME sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-CUSTOMER_POSTAL_CODE sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-TAX_TYPE_DESC sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-TAX_NUMBER sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-TAX_RATE sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-UNITARY_AMOUNT sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-TOTAL_AMOUNT sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-TAX_BASE_AMOUNT sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-TAX_AMOUNT sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-LOCAL_CURRENCY sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-QUANTITY sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-UNIT sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-TITLE sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-TEXT1 sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-TEXT2 sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-TEXT3 sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-TEXT4 sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-TEXT5 sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-TEXT6 sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-TEXT7 sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-TEXT8 sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-TEXT9 sy-vline 
WA_FIAR_ASSIGNMENT_NOTE_STR-TEXT10 sy-vline      INTO ld_text SEPARATED BY SPACE.

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