ABAP Select data from SAP table FTI_LDB_CLASS_DATA_12 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FTI_LDB_CLASS_DATA_12 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 FTI_LDB_CLASS_DATA_12. 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 FTI_LDB_CLASS_DATA_12 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_FTI_LDB_CLASS_DATA_12 TYPE STANDARD TABLE OF FTI_LDB_CLASS_DATA_12,
      WA_FTI_LDB_CLASS_DATA_12 TYPE FTI_LDB_CLASS_DATA_12,
      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: <FTI_LDB_CLASS_DATA_12> TYPE FTI_LDB_CLASS_DATA_12.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FTI_LDB_CLASS_DATA_12.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FTI_LDB_CLASS_DATA_12
  INTO TABLE IT_FTI_LDB_CLASS_DATA_12.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FTI_LDB_CLASS_DATA_12
*  INTO TABLE @DATA(IT_FTI_LDB_CLASS_DATA_122).
*--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_FTI_LDB_CLASS_DATA_12 INDEX 1 INTO DATA(WA_FTI_LDB_CLASS_DATA_122).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FTI_LDB_CLASS_DATA_12 ASSIGNING <FTI_LDB_CLASS_DATA_12>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FTI_LDB_CLASS_DATA_12>-SETTLEMENT_METHOD = 1.
<FTI_LDB_CLASS_DATA_12>-PUT_CALL_INDICATOR = 1.
<FTI_LDB_CLASS_DATA_12>-SETTLEMENT_OPT = 1.
<FTI_LDB_CLASS_DATA_12>-EXERCISE_TYPE_OPT = 1.
<FTI_LDB_CLASS_DATA_12>-SECURITY_REFERENCE = 1.

ENDLOOP.

LOOP AT IT_FTI_LDB_CLASS_DATA_12 INTO WA_FTI_LDB_CLASS_DATA_12.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FTI_LDB_CLASS_DATA_12-OPT_FUT_CATEGORY, sy-vline,
  WA_FTI_LDB_CLASS_DATA_12-ORG_OPTTYPE, sy-vline,
  WA_FTI_LDB_CLASS_DATA_12-OPT_FUT_QUOTATION, sy-vline,
  WA_FTI_LDB_CLASS_DATA_12-EXPIRY_DATE, sy-vline,
  WA_FTI_LDB_CLASS_DATA_12-LAST_TRADING_DAY, sy-vline,
  WA_FTI_LDB_CLASS_DATA_12-SETTLEMENT_DAY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FTI_LDB_CLASS_DATA_12 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_FTI_LDB_CLASS_DATA_12 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_FTI_LDB_CLASS_DATA_12 INTO WA_FTI_LDB_CLASS_DATA_12.


*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 SECURITY_REFERENCE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FTI_LDB_CLASS_DATA_12-SECURITY_REFERENCE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FTI_LDB_CLASS_DATA_12-SECURITY_REFERENCE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field CONTRACT_SZ_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FTI_LDB_CLASS_DATA_12-CONTRACT_SZ_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FTI_LDB_CLASS_DATA_12-CONTRACT_SZ_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_FTI_LDB_CLASS_DATA_12_STR, 
SETTLEMENT_METHOD TYPE STRING,
PUT_CALL_INDICATOR TYPE STRING,
SETTLEMENT_OPT TYPE STRING,
EXERCISE_TYPE_OPT TYPE STRING,
SECURITY_REFERENCE TYPE STRING,
OPT_FUT_CATEGORY TYPE STRING,
ORG_OPTTYPE TYPE STRING,
OPT_FUT_QUOTATION TYPE STRING,
EXPIRY_DATE TYPE STRING,
LAST_TRADING_DAY TYPE STRING,
SETTLEMENT_DAY TYPE STRING,
FACTORY_CALENDAR TYPE STRING,
FINAL_DUE_DATE_F TYPE STRING,
SECURITY_INDEX TYPE STRING,
NUMBER_OF_UNITS TYPE STRING,
STRIKE_AMOUNT TYPE STRING,
STRIKE_IN_POINTS TYPE STRING,
TICK_AMOUNT TYPE STRING,
TICK_IN_POINTS TYPE STRING,
TICK_VALUE TYPE STRING,
TICK_VALUE_FINE TYPE STRING,
NOMINAL_VALUE_F TYPE STRING,
INDEX_POINT_VALUE TYPE STRING,
COMMODITY_ID TYPE STRING,
CONTRACT_SIZE TYPE STRING,
CONTRACT_SZ_UNIT TYPE STRING,
AVG_PERIOD_START TYPE STRING,
AVG_PERIOD_END TYPE STRING,
DCSID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FTI_LDB_CLASS_DATA_12_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_FTI_LDB_CLASS_DATA_12_STR-SETTLEMENT_METHOD sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-PUT_CALL_INDICATOR sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-SETTLEMENT_OPT sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-EXERCISE_TYPE_OPT sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-SECURITY_REFERENCE sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-OPT_FUT_CATEGORY sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-ORG_OPTTYPE sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-OPT_FUT_QUOTATION sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-EXPIRY_DATE sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-LAST_TRADING_DAY sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-SETTLEMENT_DAY sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-FACTORY_CALENDAR sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-FINAL_DUE_DATE_F sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-SECURITY_INDEX sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-NUMBER_OF_UNITS sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-STRIKE_AMOUNT sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-STRIKE_IN_POINTS sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-TICK_AMOUNT sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-TICK_IN_POINTS sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-TICK_VALUE sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-TICK_VALUE_FINE sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-NOMINAL_VALUE_F sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-INDEX_POINT_VALUE sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-COMMODITY_ID sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-CONTRACT_SIZE sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-CONTRACT_SZ_UNIT sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-AVG_PERIOD_START sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-AVG_PERIOD_END sy-vline 
WA_FTI_LDB_CLASS_DATA_12_STR-DCSID sy-vline      INTO ld_text SEPARATED BY SPACE.

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