ABAP Select data from SAP table BW03_1000 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BW03_1000 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 BW03_1000. 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 BW03_1000 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_BW03_1000 TYPE STANDARD TABLE OF BW03_1000,
      WA_BW03_1000 TYPE BW03_1000,
      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: <BW03_1000> TYPE BW03_1000.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BW03_1000.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BW03_1000
  INTO TABLE IT_BW03_1000.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BW03_1000
*  INTO TABLE @DATA(IT_BW03_10002).
*--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_BW03_1000 INDEX 1 INTO DATA(WA_BW03_10002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BW03_1000 ASSIGNING <BW03_1000>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BW03_1000>-PAGENAME = 1.
<BW03_1000>-FOL_NAME = 1.
<BW03_1000>-FOL_SIZE = 1.
<BW03_1000>-USER_NAME = 1.
<BW03_1000>-M_CLASS = 1.

ENDLOOP.

LOOP AT IT_BW03_1000 INTO WA_BW03_1000.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BW03_1000-M_OBJ_NAME, sy-vline,
  WA_BW03_1000-M_OBJ_TYPE, sy-vline,
  WA_BW03_1000-M_OBJ_SIZE, sy-vline,
  WA_BW03_1000-M_L_DATE, sy-vline,
  WA_BW03_1000-M_CRE_NAME, sy-vline,
  WA_BW03_1000-M_UNREAD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BW03_1000 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_BW03_1000 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_BW03_1000 INTO WA_BW03_1000.


*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 SXIDN, internal->external for field USER_NAME
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_BW03_1000-USER_NAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BW03_1000-USER_NAME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SXIDN, internal->external for field M_CRE_NAME
CALL FUNCTION 'CONVERSION_EXIT_SXIDN_OUTPUT'
  EXPORTING
    input =                      WA_BW03_1000-M_CRE_NAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BW03_1000-M_CRE_NAME.
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_BW03_1000_STR, 
PAGENAME TYPE STRING,
FOL_NAME TYPE STRING,
FOL_SIZE TYPE STRING,
USER_NAME TYPE STRING,
M_CLASS TYPE STRING,
M_OBJ_NAME TYPE STRING,
M_OBJ_TYPE TYPE STRING,
M_OBJ_SIZE TYPE STRING,
M_L_DATE TYPE STRING,
M_CRE_NAME TYPE STRING,
M_UNREAD TYPE STRING,
M_EXPRESS TYPE STRING,
M_DKEY TYPE STRING,
DKEY TYPE STRING,
OBJ_NAME TYPE STRING,
2_LINE TYPE STRING,
3_W_TEXT TYPE STRING,
3_W_CODE TYPE STRING,
CHOICE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BW03_1000_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_BW03_1000_STR-PAGENAME sy-vline 
WA_BW03_1000_STR-FOL_NAME sy-vline 
WA_BW03_1000_STR-FOL_SIZE sy-vline 
WA_BW03_1000_STR-USER_NAME sy-vline 
WA_BW03_1000_STR-M_CLASS sy-vline 
WA_BW03_1000_STR-M_OBJ_NAME sy-vline 
WA_BW03_1000_STR-M_OBJ_TYPE sy-vline 
WA_BW03_1000_STR-M_OBJ_SIZE sy-vline 
WA_BW03_1000_STR-M_L_DATE sy-vline 
WA_BW03_1000_STR-M_CRE_NAME sy-vline 
WA_BW03_1000_STR-M_UNREAD sy-vline 
WA_BW03_1000_STR-M_EXPRESS sy-vline 
WA_BW03_1000_STR-M_DKEY sy-vline 
WA_BW03_1000_STR-DKEY sy-vline 
WA_BW03_1000_STR-OBJ_NAME sy-vline 
WA_BW03_1000_STR-2_LINE sy-vline 
WA_BW03_1000_STR-3_W_TEXT sy-vline 
WA_BW03_1000_STR-3_W_CODE sy-vline 
WA_BW03_1000_STR-CHOICE sy-vline      INTO ld_text SEPARATED BY SPACE.

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