ABAP Select data from SAP table V_FCDM_ATTR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_FCDM_ATTR
*  INTO TABLE @DATA(IT_V_FCDM_ATTR2).
*--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_V_FCDM_ATTR INDEX 1 INTO DATA(WA_V_FCDM_ATTR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_FCDM_ATTR>-MANDT = 1.
<V_FCDM_ATTR>-FCDMVERSION = 1.
<V_FCDM_ATTR>-MATNR = 1.
<V_FCDM_ATTR>-WERKS = 1.
<V_FCDM_ATTR>-BERID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_FCDM_ATTR-PER_SDAT, sy-vline,
  WA_V_FCDM_ATTR-PLAAB, sy-vline,
  WA_V_FCDM_ATTR-PLANR, sy-vline,
  WA_V_FCDM_ATTR-BEDAE, sy-vline,
  WA_V_FCDM_ATTR-VERVS, sy-vline,
  WA_V_FCDM_ATTR-VERVP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_FCDM_ATTR 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_V_FCDM_ATTR 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_V_FCDM_ATTR INTO WA_V_FCDM_ATTR.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_V_FCDM_ATTR-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_FCDM_ATTR-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_V_FCDM_ATTR-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_FCDM_ATTR-MEINS.
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_V_FCDM_ATTR_STR, 
MANDT TYPE STRING,
FCDMVERSION TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
BERID TYPE STRING,
PER_SDAT TYPE STRING,
PLAAB TYPE STRING,
PLANR TYPE STRING,
BEDAE TYPE STRING,
VERVS TYPE STRING,
VERVP TYPE STRING,
BDZEI TYPE STRING,
CONS_MODE TYPE STRING,
PERKZ_HEAD TYPE STRING,
ZUVKZ TYPE STRING,
PERKZ_ITEM TYPE STRING,
PER_EDAT TYPE STRING,
LOEVR TYPE STRING,
ACC_PAST TYPE STRING,
DRAFT_QTY TYPE STRING,
PLAN_QTY TYPE STRING,
RELEASED TYPE STRING,
WITHDR_QTY TYPE STRING,
OPEN_QTY TYPE STRING,
MEINS TYPE STRING,
CONS_SDAT TYPE STRING,
CONS_EDAT TYPE STRING,
PDATU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_FCDM_ATTR_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_V_FCDM_ATTR_STR-MANDT sy-vline 
WA_V_FCDM_ATTR_STR-FCDMVERSION sy-vline 
WA_V_FCDM_ATTR_STR-MATNR sy-vline 
WA_V_FCDM_ATTR_STR-WERKS sy-vline 
WA_V_FCDM_ATTR_STR-BERID sy-vline 
WA_V_FCDM_ATTR_STR-PER_SDAT sy-vline 
WA_V_FCDM_ATTR_STR-PLAAB sy-vline 
WA_V_FCDM_ATTR_STR-PLANR sy-vline 
WA_V_FCDM_ATTR_STR-BEDAE sy-vline 
WA_V_FCDM_ATTR_STR-VERVS sy-vline 
WA_V_FCDM_ATTR_STR-VERVP sy-vline 
WA_V_FCDM_ATTR_STR-BDZEI sy-vline 
WA_V_FCDM_ATTR_STR-CONS_MODE sy-vline 
WA_V_FCDM_ATTR_STR-PERKZ_HEAD sy-vline 
WA_V_FCDM_ATTR_STR-ZUVKZ sy-vline 
WA_V_FCDM_ATTR_STR-PERKZ_ITEM sy-vline 
WA_V_FCDM_ATTR_STR-PER_EDAT sy-vline 
WA_V_FCDM_ATTR_STR-LOEVR sy-vline 
WA_V_FCDM_ATTR_STR-ACC_PAST sy-vline 
WA_V_FCDM_ATTR_STR-DRAFT_QTY sy-vline 
WA_V_FCDM_ATTR_STR-PLAN_QTY sy-vline 
WA_V_FCDM_ATTR_STR-RELEASED sy-vline 
WA_V_FCDM_ATTR_STR-WITHDR_QTY sy-vline 
WA_V_FCDM_ATTR_STR-OPEN_QTY sy-vline 
WA_V_FCDM_ATTR_STR-MEINS sy-vline 
WA_V_FCDM_ATTR_STR-CONS_SDAT sy-vline 
WA_V_FCDM_ATTR_STR-CONS_EDAT sy-vline 
WA_V_FCDM_ATTR_STR-PDATU sy-vline      INTO ld_text SEPARATED BY SPACE.

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