ABAP Select data from SAP table BDNT2OBJ into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BDNT2OBJ 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 BDNT2OBJ. 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 BDNT2OBJ 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_BDNT2OBJ TYPE STANDARD TABLE OF BDNT2OBJ,
      WA_BDNT2OBJ TYPE BDNT2OBJ,
      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: <BDNT2OBJ> TYPE BDNT2OBJ.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BDNT2OBJ.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BDNT2OBJ
  INTO TABLE IT_BDNT2OBJ.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BDNT2OBJ
*  INTO TABLE @DATA(IT_BDNT2OBJ2).
*--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_BDNT2OBJ INDEX 1 INTO DATA(WA_BDNT2OBJ2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BDNT2OBJ ASSIGNING <BDNT2OBJ>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BDNT2OBJ>-MESTYP = 1.
<BDNT2OBJ>-MESCOD = 1.
<BDNT2OBJ>-MESFCT = 1.
<BDNT2OBJ>-SNDPRN = 1.
<BDNT2OBJ>-SNDPRT = 1.

ENDLOOP.

LOOP AT IT_BDNT2OBJ INTO WA_BDNT2OBJ.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BDNT2OBJ-SNDPFC, sy-vline,
  WA_BDNT2OBJ-TEST, sy-vline,
  WA_BDNT2OBJ-DIRECTION, sy-vline,
  WA_BDNT2OBJ-OBJTYP, sy-vline,
  WA_BDNT2OBJ-METHOD, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_BDNT2OBJ 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_BDNT2OBJ 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_BDNT2OBJ INTO WA_BDNT2OBJ.


*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 SNDPRN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BDNT2OBJ-SNDPRN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BDNT2OBJ-SNDPRN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EDIPV, internal->external for field SNDPFC
CALL FUNCTION 'CONVERSION_EXIT_EDIPV_OUTPUT'
  EXPORTING
    input =                      WA_BDNT2OBJ-SNDPFC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BDNT2OBJ-SNDPFC.
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_BDNT2OBJ_STR, 
MESTYP TYPE STRING,
MESCOD TYPE STRING,
MESFCT TYPE STRING,
SNDPRN TYPE STRING,
SNDPRT TYPE STRING,
SNDPFC TYPE STRING,
TEST TYPE STRING,
DIRECTION TYPE STRING,
OBJTYP TYPE STRING,
METHOD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BDNT2OBJ_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_BDNT2OBJ_STR-MESTYP sy-vline 
WA_BDNT2OBJ_STR-MESCOD sy-vline 
WA_BDNT2OBJ_STR-MESFCT sy-vline 
WA_BDNT2OBJ_STR-SNDPRN sy-vline 
WA_BDNT2OBJ_STR-SNDPRT sy-vline 
WA_BDNT2OBJ_STR-SNDPFC sy-vline 
WA_BDNT2OBJ_STR-TEST sy-vline 
WA_BDNT2OBJ_STR-DIRECTION sy-vline 
WA_BDNT2OBJ_STR-OBJTYP sy-vline 
WA_BDNT2OBJ_STR-METHOD sy-vline      INTO ld_text SEPARATED BY SPACE.

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