ABAP Select data from SAP table /SMFND/DSF30 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SMFND/DSF30 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 /SMFND/DSF30. 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 /SMFND/DSF30 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_/SMFND/DSF30 TYPE STANDARD TABLE OF /SMFND/DSF30,
      WA_/SMFND/DSF30 TYPE /SMFND/DSF30,
      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: </SMFND/DSF30> TYPE /SMFND/DSF30.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SMFND/DSF30.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SMFND/DSF30
  INTO TABLE IT_/SMFND/DSF30.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SMFND/DSF30
*  INTO TABLE @DATA(IT_/SMFND/DSF302).
*--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_/SMFND/DSF30 INDEX 1 INTO DATA(WA_/SMFND/DSF302).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SMFND/DSF30 ASSIGNING </SMFND/DSF30>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SMFND/DSF30>-MANDT = 1.
</SMFND/DSF30>-DSTORE_ID = 1.
</SMFND/DSF30>-SCHED_ID = 1.
</SMFND/DSF30>-DAGENT_ID = 1.
</SMFND/DSF30>-SORT_ORDER = 1.

ENDLOOP.

LOOP AT IT_/SMFND/DSF30 INTO WA_/SMFND/DSF30.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SMFND/DSF30-BEGIN_TS, sy-vline,
  WA_/SMFND/DSF30-END_TS, sy-vline,
  WA_/SMFND/DSF30-FREQUENCY, sy-vline,
  WA_/SMFND/DSF30-MAXIMUM, sy-vline,
  WA_/SMFND/DSF30-VRNT_TYPE, sy-vline,
  WA_/SMFND/DSF30-VRNT_ECATT_CONT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SMFND/DSF30 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_/SMFND/DSF30 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_/SMFND/DSF30 INTO WA_/SMFND/DSF30.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/SMFND/DSF30_STR, 
MANDT TYPE STRING,
DSTORE_ID TYPE STRING,
SCHED_ID TYPE STRING,
DAGENT_ID TYPE STRING,
SORT_ORDER TYPE STRING,
BEGIN_TS TYPE STRING,
END_TS TYPE STRING,
FREQUENCY TYPE STRING,
MAXIMUM TYPE STRING,
VRNT_TYPE TYPE STRING,
VRNT_ECATT_CONT TYPE STRING,
VRNT_ECATT_NAME TYPE STRING,
ACTIVE TYPE STRING,
MOBILE_APP TYPE STRING,
PULSE_CHECK TYPE STRING,
MAX_RUNTIME TYPE STRING,
DATA_VARIANT_ID TYPE STRING,
USE_ALL_VARIANTS TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_TS TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_TS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SMFND/DSF30_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_/SMFND/DSF30_STR-MANDT sy-vline 
WA_/SMFND/DSF30_STR-DSTORE_ID sy-vline 
WA_/SMFND/DSF30_STR-SCHED_ID sy-vline 
WA_/SMFND/DSF30_STR-DAGENT_ID sy-vline 
WA_/SMFND/DSF30_STR-SORT_ORDER sy-vline 
WA_/SMFND/DSF30_STR-BEGIN_TS sy-vline 
WA_/SMFND/DSF30_STR-END_TS sy-vline 
WA_/SMFND/DSF30_STR-FREQUENCY sy-vline 
WA_/SMFND/DSF30_STR-MAXIMUM sy-vline 
WA_/SMFND/DSF30_STR-VRNT_TYPE sy-vline 
WA_/SMFND/DSF30_STR-VRNT_ECATT_CONT sy-vline 
WA_/SMFND/DSF30_STR-VRNT_ECATT_NAME sy-vline 
WA_/SMFND/DSF30_STR-ACTIVE sy-vline 
WA_/SMFND/DSF30_STR-MOBILE_APP sy-vline 
WA_/SMFND/DSF30_STR-PULSE_CHECK sy-vline 
WA_/SMFND/DSF30_STR-MAX_RUNTIME sy-vline 
WA_/SMFND/DSF30_STR-DATA_VARIANT_ID sy-vline 
WA_/SMFND/DSF30_STR-USE_ALL_VARIANTS sy-vline 
WA_/SMFND/DSF30_STR-CREATED_BY sy-vline 
WA_/SMFND/DSF30_STR-CREATED_TS sy-vline 
WA_/SMFND/DSF30_STR-CHANGED_BY sy-vline 
WA_/SMFND/DSF30_STR-CHANGED_TS sy-vline      INTO ld_text SEPARATED BY SPACE.

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