ABAP Select data from SAP table FTBB_MDG_VAR_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_VAR_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_VAR_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_VAR_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_VAR_FX TYPE STANDARD TABLE OF FTBB_MDG_VAR_FX,
      WA_FTBB_MDG_VAR_FX TYPE FTBB_MDG_VAR_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_VAR_FX> TYPE FTBB_MDG_VAR_FX.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FTBB_MDG_VAR_FX
*  INTO TABLE @DATA(IT_FTBB_MDG_VAR_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_VAR_FX INDEX 1 INTO DATA(WA_FTBB_MDG_VAR_FX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FTBB_MDG_VAR_FX>-MANDT = 1.
<FTBB_MDG_VAR_FX>-REPORT = 1.
<FTBB_MDG_VAR_FX>-VVARIANT = 1.
<FTBB_MDG_VAR_FX>-KURST = 1.
<FTBB_MDG_VAR_FX>-FCURR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FTBB_MDG_VAR_FX-TCURR, sy-vline,
  WA_FTBB_MDG_VAR_FX-KURSM, sy-vline,
  WA_FTBB_MDG_VAR_FX-FFACT, sy-vline,
  WA_FTBB_MDG_VAR_FX-KURSP, sy-vline,
  WA_FTBB_MDG_VAR_FX-TFACT, sy-vline,
  WA_FTBB_MDG_VAR_FX-VOLA_FX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FTBB_MDG_VAR_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_VAR_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_VAR_FX INTO WA_FTBB_MDG_VAR_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_VAR_FX-MEANVALCURR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FTBB_MDG_VAR_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_VAR_FX_STR, 
MANDT TYPE STRING,
REPORT TYPE STRING,
VVARIANT TYPE STRING,
KURST TYPE STRING,
FCURR TYPE STRING,
TCURR TYPE STRING,
KURSM TYPE STRING,
FFACT TYPE STRING,
KURSP TYPE STRING,
TFACT TYPE STRING,
VOLA_FX TYPE STRING,
MEANREV_FX TYPE STRING,
MEANVALCURR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FTBB_MDG_VAR_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_VAR_FX_STR-MANDT sy-vline 
WA_FTBB_MDG_VAR_FX_STR-REPORT sy-vline 
WA_FTBB_MDG_VAR_FX_STR-VVARIANT sy-vline 
WA_FTBB_MDG_VAR_FX_STR-KURST sy-vline 
WA_FTBB_MDG_VAR_FX_STR-FCURR sy-vline 
WA_FTBB_MDG_VAR_FX_STR-TCURR sy-vline 
WA_FTBB_MDG_VAR_FX_STR-KURSM sy-vline 
WA_FTBB_MDG_VAR_FX_STR-FFACT sy-vline 
WA_FTBB_MDG_VAR_FX_STR-KURSP sy-vline 
WA_FTBB_MDG_VAR_FX_STR-TFACT sy-vline 
WA_FTBB_MDG_VAR_FX_STR-VOLA_FX sy-vline 
WA_FTBB_MDG_VAR_FX_STR-MEANREV_FX sy-vline 
WA_FTBB_MDG_VAR_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.