ABAP Select data from SAP table BUS000MSG into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP BUS000MSG 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 BUS000MSG. 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 BUS000MSG 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_BUS000MSG TYPE STANDARD TABLE OF BUS000MSG,
      WA_BUS000MSG TYPE BUS000MSG,
      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: <BUS000MSG> TYPE BUS000MSG.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BUS000MSG.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BUS000MSG
  INTO TABLE IT_BUS000MSG.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BUS000MSG
*  INTO TABLE @DATA(IT_BUS000MSG2).
*--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_BUS000MSG INDEX 1 INTO DATA(WA_BUS000MSG2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BUS000MSG ASSIGNING <BUS000MSG>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BUS000MSG>-ZEILE = 1.
<BUS000MSG>-MSGTY = 1.
<BUS000MSG>-TEXT = 1.
<BUS000MSG>-ARBGB = 1.
<BUS000MSG>-TXTNR = 1.

ENDLOOP.

LOOP AT IT_BUS000MSG INTO WA_BUS000MSG.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BUS000MSG-MSGV1, sy-vline,
  WA_BUS000MSG-MSGV2, sy-vline,
  WA_BUS000MSG-MSGV3, sy-vline,
  WA_BUS000MSG-MSGV4, sy-vline,
  WA_BUS000MSG-PARTNER, sy-vline,
  WA_BUS000MSG-COLL_STAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BUS000MSG 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_BUS000MSG 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_BUS000MSG INTO WA_BUS000MSG.


*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 PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BUS000MSG-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BUS000MSG-PARTNER.
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_BUS000MSG_STR, 
ZEILE TYPE STRING,
MSGTY TYPE STRING,
TEXT TYPE STRING,
ARBGB TYPE STRING,
TXTNR TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
PARTNER TYPE STRING,
COLL_STAT TYPE STRING,
TBFLD TYPE STRING,
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
DYNID TYPE STRING,
SICHT TYPE STRING,
STEPL TYPE STRING,
RLTYP TYPE STRING,
SHOWED TYPE STRING,
DISP_REP TYPE STRING,
DEL_FLG TYPE STRING,
INDEXR TYPE STRING,
INDEXA TYPE STRING,
INDEX_BEG TYPE STRING,
INDEX_END TYPE STRING,
CANCEL TYPE STRING,
TEXT_EXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BUS000MSG_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_BUS000MSG_STR-ZEILE sy-vline 
WA_BUS000MSG_STR-MSGTY sy-vline 
WA_BUS000MSG_STR-TEXT sy-vline 
WA_BUS000MSG_STR-ARBGB sy-vline 
WA_BUS000MSG_STR-TXTNR sy-vline 
WA_BUS000MSG_STR-MSGV1 sy-vline 
WA_BUS000MSG_STR-MSGV2 sy-vline 
WA_BUS000MSG_STR-MSGV3 sy-vline 
WA_BUS000MSG_STR-MSGV4 sy-vline 
WA_BUS000MSG_STR-PARTNER sy-vline 
WA_BUS000MSG_STR-COLL_STAT sy-vline 
WA_BUS000MSG_STR-TBFLD sy-vline 
WA_BUS000MSG_STR-TABNAME sy-vline 
WA_BUS000MSG_STR-FIELDNAME sy-vline 
WA_BUS000MSG_STR-DYNID sy-vline 
WA_BUS000MSG_STR-SICHT sy-vline 
WA_BUS000MSG_STR-STEPL sy-vline 
WA_BUS000MSG_STR-RLTYP sy-vline 
WA_BUS000MSG_STR-SHOWED sy-vline 
WA_BUS000MSG_STR-DISP_REP sy-vline 
WA_BUS000MSG_STR-DEL_FLG sy-vline 
WA_BUS000MSG_STR-INDEXR sy-vline 
WA_BUS000MSG_STR-INDEXA sy-vline 
WA_BUS000MSG_STR-INDEX_BEG sy-vline 
WA_BUS000MSG_STR-INDEX_END sy-vline 
WA_BUS000MSG_STR-CANCEL sy-vline 
WA_BUS000MSG_STR-TEXT_EXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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