ABAP Select data from SAP table FIAR_GS_T001 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FIAR_GS_T001 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_GS_T001. 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_GS_T001 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_GS_T001 TYPE STANDARD TABLE OF FIAR_GS_T001,
      WA_FIAR_GS_T001 TYPE FIAR_GS_T001,
      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_GS_T001> TYPE FIAR_GS_T001.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FIAR_GS_T001.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FIAR_GS_T001
  INTO TABLE IT_FIAR_GS_T001.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FIAR_GS_T001
*  INTO TABLE @DATA(IT_FIAR_GS_T0012).
*--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_GS_T001 INDEX 1 INTO DATA(WA_FIAR_GS_T0012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FIAR_GS_T001 ASSIGNING <FIAR_GS_T001>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FIAR_GS_T001>-BUKRS = 1.
<FIAR_GS_T001>-LAND1 = 1.
<FIAR_GS_T001>-ADRNR = 1.
<FIAR_GS_T001>-WAERS = 1.
<FIAR_GS_T001>-KTOPL = 1.

ENDLOOP.

LOOP AT IT_FIAR_GS_T001 INTO WA_FIAR_GS_T001.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FIAR_GS_T001-PERIV, sy-vline,
  WA_FIAR_GS_T001-KALSM, sy-vline,
  WA_FIAR_GS_T001-STCDT, sy-vline,
  WA_FIAR_GS_T001-STCD1, sy-vline,
  WA_FIAR_GS_T001-NAME1, sy-vline,
  WA_FIAR_GS_T001-NAME2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FIAR_GS_T001 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_GS_T001 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_GS_T001 INTO WA_FIAR_GS_T001.


*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 ADRNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FIAR_GS_T001-ADRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FIAR_GS_T001-ADRNR.
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_GS_T001_STR, 
BUKRS TYPE STRING,
LAND1 TYPE STRING,
ADRNR TYPE STRING,
WAERS TYPE STRING,
KTOPL TYPE STRING,
PERIV TYPE STRING,
KALSM TYPE STRING,
STCDT TYPE STRING,
STCD1 TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
STREET TYPE STRING,
ORT01 TYPE STRING,
PSTLZ TYPE STRING,
REGIO TYPE STRING,
BEZEI TYPE STRING,
LANDX TYPE STRING,
FITYP TYPE STRING,
IGJRN TYPE STRING,
IGJBV TYPE STRING,
IGJDR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FIAR_GS_T001_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_GS_T001_STR-BUKRS sy-vline 
WA_FIAR_GS_T001_STR-LAND1 sy-vline 
WA_FIAR_GS_T001_STR-ADRNR sy-vline 
WA_FIAR_GS_T001_STR-WAERS sy-vline 
WA_FIAR_GS_T001_STR-KTOPL sy-vline 
WA_FIAR_GS_T001_STR-PERIV sy-vline 
WA_FIAR_GS_T001_STR-KALSM sy-vline 
WA_FIAR_GS_T001_STR-STCDT sy-vline 
WA_FIAR_GS_T001_STR-STCD1 sy-vline 
WA_FIAR_GS_T001_STR-NAME1 sy-vline 
WA_FIAR_GS_T001_STR-NAME2 sy-vline 
WA_FIAR_GS_T001_STR-NAME3 sy-vline 
WA_FIAR_GS_T001_STR-NAME4 sy-vline 
WA_FIAR_GS_T001_STR-STREET sy-vline 
WA_FIAR_GS_T001_STR-ORT01 sy-vline 
WA_FIAR_GS_T001_STR-PSTLZ sy-vline 
WA_FIAR_GS_T001_STR-REGIO sy-vline 
WA_FIAR_GS_T001_STR-BEZEI sy-vline 
WA_FIAR_GS_T001_STR-LANDX sy-vline 
WA_FIAR_GS_T001_STR-FITYP sy-vline 
WA_FIAR_GS_T001_STR-IGJRN sy-vline 
WA_FIAR_GS_T001_STR-IGJBV sy-vline 
WA_FIAR_GS_T001_STR-IGJDR sy-vline      INTO ld_text SEPARATED BY SPACE.

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