ABAP Select data from SAP table VFAAT_MD_VAL_TDD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VFAAT_MD_VAL_TDD
*  INTO TABLE @DATA(IT_VFAAT_MD_VAL_TDD2).
*--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_VFAAT_MD_VAL_TDD INDEX 1 INTO DATA(WA_VFAAT_MD_VAL_TDD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VFAAT_MD_VAL_TDD>-CLIENT = 1.
<VFAAT_MD_VAL_TDD>-COMP_CODE = 1.
<VFAAT_MD_VAL_TDD>-ASSET_NO = 1.
<VFAAT_MD_VAL_TDD>-ASSET_SUBNO = 1.
<VFAAT_MD_VAL_TDD>-LEDGER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VFAAT_MD_VAL_TDD-DEPR_AREA, sy-vline,
  WA_VFAAT_MD_VAL_TDD-VALID_TO_DATE, sy-vline,
  WA_VFAAT_MD_VAL_TDD-VALID_FROM_DATE, sy-vline,
  WA_VFAAT_MD_VAL_TDD-DEPR_KEY, sy-vline,
  WA_VFAAT_MD_VAL_TDD-USEFUL_LIFE_YEARS, sy-vline,
  WA_VFAAT_MD_VAL_TDD-USEFUL_LIFE_PERIODS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VFAAT_MD_VAL_TDD 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_VFAAT_MD_VAL_TDD 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_VFAAT_MD_VAL_TDD INTO WA_VFAAT_MD_VAL_TDD.


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

*Conversion exit ALPHA, internal->external for field ASSET_SUBNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VFAAT_MD_VAL_TDD-ASSET_SUBNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VFAAT_MD_VAL_TDD-ASSET_SUBNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LEDGER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VFAAT_MD_VAL_TDD-LEDGER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VFAAT_MD_VAL_TDD-LEDGER.
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_VFAAT_MD_VAL_TDD_STR, 
CLIENT TYPE STRING,
COMP_CODE TYPE STRING,
ASSET_NO TYPE STRING,
ASSET_SUBNO TYPE STRING,
LEDGER TYPE STRING,
DEPR_AREA TYPE STRING,
VALID_TO_DATE TYPE STRING,
VALID_FROM_DATE TYPE STRING,
DEPR_KEY TYPE STRING,
USEFUL_LIFE_YEARS TYPE STRING,
USEFUL_LIFE_PERIODS TYPE STRING,
VAR_DEP_PORTION TYPE STRING,
BASE_VALUE_PERCENT TYPE STRING,
MULTIPLE_SHIFT TYPE STRING,
SHUTDOWN_INDICATOR TYPE STRING,
USAGE_OBJECT TYPE STRING,
SCRAP_VALUE_HSL TYPE STRING,
SCRAP_VALUE_KSL TYPE STRING,
SCRAP_VALUE_OSL TYPE STRING,
SCRAP_VALUE_VSL TYPE STRING,
SCRAP_VALUE_BSL TYPE STRING,
SCRAP_VALUE_CSL TYPE STRING,
SCRAP_VALUE_DSL TYPE STRING,
SCRAP_VALUE_ESL TYPE STRING,
SCRAP_VALUE_FSL TYPE STRING,
SCRAP_VALUE_GSL TYPE STRING,
SCRAP_VALUE_PERCENT TYPE STRING,
CALCULATION_VIEW_TYPE TYPE STRING,
KZ TYPE STRING,
FAAS_CURRENCIESRHCUR TYPE STRING,
FAAS_CURRENCIESRKCUR TYPE STRING,
FAAS_CURRENCIESROCUR TYPE STRING,
FAAS_CURRENCIESRVCUR TYPE STRING,
FAAS_CURRENCIESRBCUR TYPE STRING,
FAAS_CURRENCIESRCCUR TYPE STRING,
FAAS_CURRENCIESRDCUR TYPE STRING,
FAAS_CURRENCIESRECUR TYPE STRING,
FAAS_CURRENCIESRFCUR TYPE STRING,
FAAS_CURRENCIESRGCUR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VFAAT_MD_VAL_TDD_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_VFAAT_MD_VAL_TDD_STR-CLIENT sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-COMP_CODE sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-ASSET_NO sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-ASSET_SUBNO sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-LEDGER sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-DEPR_AREA sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-VALID_TO_DATE sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-VALID_FROM_DATE sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-DEPR_KEY sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-USEFUL_LIFE_YEARS sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-USEFUL_LIFE_PERIODS sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-VAR_DEP_PORTION sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-BASE_VALUE_PERCENT sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-MULTIPLE_SHIFT sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-SHUTDOWN_INDICATOR sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-USAGE_OBJECT sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-SCRAP_VALUE_HSL sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-SCRAP_VALUE_KSL sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-SCRAP_VALUE_OSL sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-SCRAP_VALUE_VSL sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-SCRAP_VALUE_BSL sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-SCRAP_VALUE_CSL sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-SCRAP_VALUE_DSL sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-SCRAP_VALUE_ESL sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-SCRAP_VALUE_FSL sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-SCRAP_VALUE_GSL sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-SCRAP_VALUE_PERCENT sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-CALCULATION_VIEW_TYPE sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-KZ sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-FAAS_CURRENCIESRHCUR sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-FAAS_CURRENCIESRKCUR sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-FAAS_CURRENCIESROCUR sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-FAAS_CURRENCIESRVCUR sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-FAAS_CURRENCIESRBCUR sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-FAAS_CURRENCIESRCCUR sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-FAAS_CURRENCIESRDCUR sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-FAAS_CURRENCIESRECUR sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-FAAS_CURRENCIESRFCUR sy-vline 
WA_VFAAT_MD_VAL_TDD_STR-FAAS_CURRENCIESRGCUR sy-vline      INTO ld_text SEPARATED BY SPACE.

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