ABAP Select data from SAP table IDFSCSTMNT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDFSCSTMNT
*  INTO TABLE @DATA(IT_IDFSCSTMNT2).
*--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_IDFSCSTMNT INDEX 1 INTO DATA(WA_IDFSCSTMNT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDFSCSTMNT>-MANDT = 1.
<IDFSCSTMNT>-DFSCAPABILITYSTATEMENTUUID = 1.
<IDFSCSTMNT>-DFSCAPABILITYSTATEMENTID = 1.
<IDFSCSTMNT>-DFSCAPBLTSTMNTDESC = 1.
<IDFSCSTMNT>-DFSCAPBLTSTMNTTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDFSCSTMNT-DFSCAPBLTSTMNTCAT, sy-vline,
  WA_IDFSCSTMNT-DFSCAPBLTSTMNTCREATIONDTETME, sy-vline,
  WA_IDFSCSTMNT-DFSCAPBLTSTMNTCREATEDBYUSER, sy-vline,
  WA_IDFSCSTMNT-DFSCAPBLTSTMNTLASTCHGDDTETME, sy-vline,
  WA_IDFSCSTMNT-DFSCAPBLTSTMNTLASTCHGDBYUSER, sy-vline,
  WA_IDFSCSTMNT-DFSCAPBLTSTMNTVALDTYSTRTDTE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDFSCSTMNT 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_IDFSCSTMNT 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_IDFSCSTMNT INTO WA_IDFSCSTMNT.


*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 DFSCAPABILITYSTATEMENTID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_IDFSCSTMNT-DFSCAPABILITYSTATEMENTID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDFSCSTMNT-DFSCAPABILITYSTATEMENTID.
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_IDFSCSTMNT_STR, 
MANDT TYPE STRING,
DFSCAPABILITYSTATEMENTUUID TYPE STRING,
DFSCAPABILITYSTATEMENTID TYPE STRING,
DFSCAPBLTSTMNTDESC TYPE STRING,
DFSCAPBLTSTMNTTYPE TYPE STRING,
DFSCAPBLTSTMNTCAT TYPE STRING,
DFSCAPBLTSTMNTCREATIONDTETME TYPE STRING,
DFSCAPBLTSTMNTCREATEDBYUSER TYPE STRING,
DFSCAPBLTSTMNTLASTCHGDDTETME TYPE STRING,
DFSCAPBLTSTMNTLASTCHGDBYUSER TYPE STRING,
DFSCAPBLTSTMNTVALDTYSTRTDTE TYPE STRING,
DFSCAPBLTSTMNTVALDTYENDDTE TYPE STRING,
DFSCAPABILITYVARGRPNAME TYPE STRING,
DFSCAPBLTSTMNTSQNCNMBR TYPE STRING,
DFSCAPBLTSTMNTREFERENCEUUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDFSCSTMNT_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_IDFSCSTMNT_STR-MANDT sy-vline 
WA_IDFSCSTMNT_STR-DFSCAPABILITYSTATEMENTUUID sy-vline 
WA_IDFSCSTMNT_STR-DFSCAPABILITYSTATEMENTID sy-vline 
WA_IDFSCSTMNT_STR-DFSCAPBLTSTMNTDESC sy-vline 
WA_IDFSCSTMNT_STR-DFSCAPBLTSTMNTTYPE sy-vline 
WA_IDFSCSTMNT_STR-DFSCAPBLTSTMNTCAT sy-vline 
WA_IDFSCSTMNT_STR-DFSCAPBLTSTMNTCREATIONDTETME sy-vline 
WA_IDFSCSTMNT_STR-DFSCAPBLTSTMNTCREATEDBYUSER sy-vline 
WA_IDFSCSTMNT_STR-DFSCAPBLTSTMNTLASTCHGDDTETME sy-vline 
WA_IDFSCSTMNT_STR-DFSCAPBLTSTMNTLASTCHGDBYUSER sy-vline 
WA_IDFSCSTMNT_STR-DFSCAPBLTSTMNTVALDTYSTRTDTE sy-vline 
WA_IDFSCSTMNT_STR-DFSCAPBLTSTMNTVALDTYENDDTE sy-vline 
WA_IDFSCSTMNT_STR-DFSCAPABILITYVARGRPNAME sy-vline 
WA_IDFSCSTMNT_STR-DFSCAPBLTSTMNTSQNCNMBR sy-vline 
WA_IDFSCSTMNT_STR-DFSCAPBLTSTMNTREFERENCEUUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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