ABAP Select data from SAP table SI_BUFI0 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SI_BUFI0 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 SI_BUFI0. 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 SI_BUFI0 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_SI_BUFI0 TYPE STANDARD TABLE OF SI_BUFI0,
      WA_SI_BUFI0 TYPE SI_BUFI0,
      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: <SI_BUFI0> TYPE SI_BUFI0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_SI_BUFI0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM SI_BUFI0
  INTO TABLE IT_SI_BUFI0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SI_BUFI0
*  INTO TABLE @DATA(IT_SI_BUFI02).
*--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_SI_BUFI0 INDEX 1 INTO DATA(WA_SI_BUFI02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_SI_BUFI0 ASSIGNING <SI_BUFI0>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SI_BUFI0>-BBBNR = 1.
<SI_BUFI0>-BBSNR = 1.
<SI_BUFI0>-BUBKZ = 1.
<SI_BUFI0>-CITYC = 1.
<SI_BUFI0>-COUNC = 1.

ENDLOOP.

LOOP AT IT_SI_BUFI0 INTO WA_SI_BUFI0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SI_BUFI0-DTAMS, sy-vline,
  WA_SI_BUFI0-DTAWS, sy-vline,
  WA_SI_BUFI0-ESRNR, sy-vline,
  WA_SI_BUFI0-KONZS, sy-vline,
  WA_SI_BUFI0-KRAUS, sy-vline,
  WA_SI_BUFI0-REFGR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SI_BUFI0 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_SI_BUFI0 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_SI_BUFI0 INTO WA_SI_BUFI0.


*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 VBUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SI_BUFI0-VBUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SI_BUFI0-VBUND.
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_SI_BUFI0_STR, 
BBBNR TYPE STRING,
BBSNR TYPE STRING,
BUBKZ TYPE STRING,
CITYC TYPE STRING,
COUNC TYPE STRING,
DTAMS TYPE STRING,
DTAWS TYPE STRING,
ESRNR TYPE STRING,
KONZS TYPE STRING,
KRAUS TYPE STRING,
REFGR TYPE STRING,
REVDB TYPE STRING,
SPERR TYPE STRING,
STCD1 TYPE STRING,
STCD2 TYPE STRING,
STCEG TYPE STRING,
STKZA TYPE STRING,
STKZU TYPE STRING,
XZEMP TYPE STRING,
VBUND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SI_BUFI0_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_SI_BUFI0_STR-BBBNR sy-vline 
WA_SI_BUFI0_STR-BBSNR sy-vline 
WA_SI_BUFI0_STR-BUBKZ sy-vline 
WA_SI_BUFI0_STR-CITYC sy-vline 
WA_SI_BUFI0_STR-COUNC sy-vline 
WA_SI_BUFI0_STR-DTAMS sy-vline 
WA_SI_BUFI0_STR-DTAWS sy-vline 
WA_SI_BUFI0_STR-ESRNR sy-vline 
WA_SI_BUFI0_STR-KONZS sy-vline 
WA_SI_BUFI0_STR-KRAUS sy-vline 
WA_SI_BUFI0_STR-REFGR sy-vline 
WA_SI_BUFI0_STR-REVDB sy-vline 
WA_SI_BUFI0_STR-SPERR sy-vline 
WA_SI_BUFI0_STR-STCD1 sy-vline 
WA_SI_BUFI0_STR-STCD2 sy-vline 
WA_SI_BUFI0_STR-STCEG sy-vline 
WA_SI_BUFI0_STR-STKZA sy-vline 
WA_SI_BUFI0_STR-STKZU sy-vline 
WA_SI_BUFI0_STR-XZEMP sy-vline 
WA_SI_BUFI0_STR-VBUND sy-vline      INTO ld_text SEPARATED BY SPACE.

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