ABAP Select data from SAP table FTBB_MDG_FX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FTBB_MDG_FX
*  INTO TABLE @DATA(IT_FTBB_MDG_FX2).
*--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_FTBB_MDG_FX INDEX 1 INTO DATA(WA_FTBB_MDG_FX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FTBB_MDG_FX>-KURST = 1.
<FTBB_MDG_FX>-KURSM = 1.
<FTBB_MDG_FX>-FFACT = 1.
<FTBB_MDG_FX>-FCURR = 1.
<FTBB_MDG_FX>-KURSP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FTBB_MDG_FX-TFACT, sy-vline,
  WA_FTBB_MDG_FX-TCURR, sy-vline,
  WA_FTBB_MDG_FX-VOLA_FX, sy-vline,
  WA_FTBB_MDG_FX-MEANREV_FX, sy-vline,
  WA_FTBB_MDG_FX-MEANVALCURR, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_FTBB_MDG_FX 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_FTBB_MDG_FX 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_FTBB_MDG_FX INTO WA_FTBB_MDG_FX.


*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 EXCRT, internal->external for field MEANVALCURR
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_FTBB_MDG_FX-MEANVALCURR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FTBB_MDG_FX-MEANVALCURR.
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_FTBB_MDG_FX_STR, 
KURST TYPE STRING,
KURSM TYPE STRING,
FFACT TYPE STRING,
FCURR TYPE STRING,
KURSP TYPE STRING,
TFACT TYPE STRING,
TCURR TYPE STRING,
VOLA_FX TYPE STRING,
MEANREV_FX TYPE STRING,
MEANVALCURR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FTBB_MDG_FX_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_FTBB_MDG_FX_STR-KURST sy-vline 
WA_FTBB_MDG_FX_STR-KURSM sy-vline 
WA_FTBB_MDG_FX_STR-FFACT sy-vline 
WA_FTBB_MDG_FX_STR-FCURR sy-vline 
WA_FTBB_MDG_FX_STR-KURSP sy-vline 
WA_FTBB_MDG_FX_STR-TFACT sy-vline 
WA_FTBB_MDG_FX_STR-TCURR sy-vline 
WA_FTBB_MDG_FX_STR-VOLA_FX sy-vline 
WA_FTBB_MDG_FX_STR-MEANREV_FX sy-vline 
WA_FTBB_MDG_FX_STR-MEANVALCURR sy-vline      INTO ld_text SEPARATED BY SPACE.

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