ABAP Select data from SAP table FBS_S_SMT_SKA1_CHNG into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FBS_S_SMT_SKA1_CHNG 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 FBS_S_SMT_SKA1_CHNG. 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 FBS_S_SMT_SKA1_CHNG 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_FBS_S_SMT_SKA1_CHNG TYPE STANDARD TABLE OF FBS_S_SMT_SKA1_CHNG,
      WA_FBS_S_SMT_SKA1_CHNG TYPE FBS_S_SMT_SKA1_CHNG,
      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: <FBS_S_SMT_SKA1_CHNG> TYPE FBS_S_SMT_SKA1_CHNG.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FBS_S_SMT_SKA1_CHNG.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FBS_S_SMT_SKA1_CHNG
  INTO TABLE IT_FBS_S_SMT_SKA1_CHNG.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FBS_S_SMT_SKA1_CHNG
*  INTO TABLE @DATA(IT_FBS_S_SMT_SKA1_CHNG2).
*--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_FBS_S_SMT_SKA1_CHNG INDEX 1 INTO DATA(WA_FBS_S_SMT_SKA1_CHNG2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FBS_S_SMT_SKA1_CHNG ASSIGNING <FBS_S_SMT_SKA1_CHNG>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FBS_S_SMT_SKA1_CHNG>-MANDT = 1.
<FBS_S_SMT_SKA1_CHNG>-KTOPL = 1.
<FBS_S_SMT_SKA1_CHNG>-SAKNR = 1.
<FBS_S_SMT_SKA1_CHNG>-XBILK = 1.
<FBS_S_SMT_SKA1_CHNG>-SAKAN = 1.

ENDLOOP.

LOOP AT IT_FBS_S_SMT_SKA1_CHNG INTO WA_FBS_S_SMT_SKA1_CHNG.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FBS_S_SMT_SKA1_CHNG-BILKT, sy-vline,
  WA_FBS_S_SMT_SKA1_CHNG-ERDAT, sy-vline,
  WA_FBS_S_SMT_SKA1_CHNG-ERNAM, sy-vline,
  WA_FBS_S_SMT_SKA1_CHNG-GVTYP, sy-vline,
  WA_FBS_S_SMT_SKA1_CHNG-KTOKS, sy-vline,
  WA_FBS_S_SMT_SKA1_CHNG-MUSTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FBS_S_SMT_SKA1_CHNG 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_FBS_S_SMT_SKA1_CHNG 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_FBS_S_SMT_SKA1_CHNG INTO WA_FBS_S_SMT_SKA1_CHNG.


*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_FBS_S_SMT_SKA1_CHNG_STR, 
MANDT TYPE STRING,
KTOPL TYPE STRING,
SAKNR TYPE STRING,
XBILK TYPE STRING,
SAKAN TYPE STRING,
BILKT TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
GVTYP TYPE STRING,
KTOKS TYPE STRING,
MUSTR TYPE STRING,
VBUND TYPE STRING,
XLOEV TYPE STRING,
XSPEA TYPE STRING,
XSPEB TYPE STRING,
XSPEP TYPE STRING,
MCOD1 TYPE STRING,
FUNC_AREA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FBS_S_SMT_SKA1_CHNG_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_FBS_S_SMT_SKA1_CHNG_STR-MANDT sy-vline 
WA_FBS_S_SMT_SKA1_CHNG_STR-KTOPL sy-vline 
WA_FBS_S_SMT_SKA1_CHNG_STR-SAKNR sy-vline 
WA_FBS_S_SMT_SKA1_CHNG_STR-XBILK sy-vline 
WA_FBS_S_SMT_SKA1_CHNG_STR-SAKAN sy-vline 
WA_FBS_S_SMT_SKA1_CHNG_STR-BILKT sy-vline 
WA_FBS_S_SMT_SKA1_CHNG_STR-ERDAT sy-vline 
WA_FBS_S_SMT_SKA1_CHNG_STR-ERNAM sy-vline 
WA_FBS_S_SMT_SKA1_CHNG_STR-GVTYP sy-vline 
WA_FBS_S_SMT_SKA1_CHNG_STR-KTOKS sy-vline 
WA_FBS_S_SMT_SKA1_CHNG_STR-MUSTR sy-vline 
WA_FBS_S_SMT_SKA1_CHNG_STR-VBUND sy-vline 
WA_FBS_S_SMT_SKA1_CHNG_STR-XLOEV sy-vline 
WA_FBS_S_SMT_SKA1_CHNG_STR-XSPEA sy-vline 
WA_FBS_S_SMT_SKA1_CHNG_STR-XSPEB sy-vline 
WA_FBS_S_SMT_SKA1_CHNG_STR-XSPEP sy-vline 
WA_FBS_S_SMT_SKA1_CHNG_STR-MCOD1 sy-vline 
WA_FBS_S_SMT_SKA1_CHNG_STR-FUNC_AREA sy-vline      INTO ld_text SEPARATED BY SPACE.

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