ABAP Select data from SAP table /SMB/S_OBJ_DEFINITION_FIELD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SMB/S_OBJ_DEFINITION_FIELD 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 /SMB/S_OBJ_DEFINITION_FIELD. 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 /SMB/S_OBJ_DEFINITION_FIELD 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_/SMB/S_OBJ_DEFINITION_FIELD TYPE STANDARD TABLE OF /SMB/S_OBJ_DEFINITION_FIELD,
      WA_/SMB/S_OBJ_DEFINITION_FIELD TYPE /SMB/S_OBJ_DEFINITION_FIELD,
      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: </SMB/S_OBJ_DEFINITION_FIELD> TYPE /SMB/S_OBJ_DEFINITION_FIELD.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SMB/S_OBJ_DEFINITION_FIELD
  INTO TABLE IT_/SMB/S_OBJ_DEFINITION_FIELD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SMB/S_OBJ_DEFINITION_FIELD
*  INTO TABLE @DATA(IT_/SMB/S_OBJ_DEFINITION_FIELD2).
*--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_/SMB/S_OBJ_DEFINITION_FIELD INDEX 1 INTO DATA(WA_/SMB/S_OBJ_DEFINITION_FIELD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SMB/S_OBJ_DEFINITION_FIELD ASSIGNING </SMB/S_OBJ_DEFINITION_FIELD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SMB/S_OBJ_DEFINITION_FIELD>-PARAMETER_NAME = 1.
</SMB/S_OBJ_DEFINITION_FIELD>-REF_TABLE = 1.
</SMB/S_OBJ_DEFINITION_FIELD>-REF_FIELD = 1.
</SMB/S_OBJ_DEFINITION_FIELD>-TECH_LANG_DEP = 1.
</SMB/S_OBJ_DEFINITION_FIELD>-LOG_LANG_DEP = 1.

ENDLOOP.

LOOP AT IT_/SMB/S_OBJ_DEFINITION_FIELD INTO WA_/SMB/S_OBJ_DEFINITION_FIELD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SMB/S_OBJ_DEFINITION_FIELD-OPT_OUT, sy-vline,
  WA_/SMB/S_OBJ_DEFINITION_FIELD-KEYFLAG, sy-vline,
  WA_/SMB/S_OBJ_DEFINITION_FIELD-DESCRIPTION, sy-vline,
  WA_/SMB/S_OBJ_DEFINITION_FIELD-DATAELEM, sy-vline,
  WA_/SMB/S_OBJ_DEFINITION_FIELD-CENTRALDATA_ALIAS, sy-vline,
  WA_/SMB/S_OBJ_DEFINITION_FIELD-CENTRALDATA_OBJECT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SMB/S_OBJ_DEFINITION_FIELD 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_/SMB/S_OBJ_DEFINITION_FIELD 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_/SMB/S_OBJ_DEFINITION_FIELD INTO WA_/SMB/S_OBJ_DEFINITION_FIELD.


*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_/SMB/S_OBJ_DEFINITION_FIELD_STR, 
PARAMETER_NAME TYPE STRING,
REF_TABLE TYPE STRING,
REF_FIELD TYPE STRING,
TECH_LANG_DEP TYPE STRING,
LOG_LANG_DEP TYPE STRING,
OPT_OUT TYPE STRING,
KEYFLAG TYPE STRING,
DESCRIPTION TYPE STRING,
DATAELEM TYPE STRING,
CENTRALDATA_ALIAS TYPE STRING,
CENTRALDATA_OBJECT TYPE STRING,
CENTRALDATA_PARAMETER TYPE STRING,
CENTRALDATA_TYPE TYPE STRING,
CENTRALDATA_TYPE_OBJ TYPE STRING,
DEFAULT_VALUE TYPE STRING,
EDITABLE_PROPERTIES TYPE STRING,
REF_TABLE TYPE STRING,
REF_FIELD TYPE STRING,
LANG_DEP TYPE STRING,
OPT_OUT TYPE STRING,
KEYFLAG TYPE STRING,
DESCRIPTION TYPE STRING,
CENTRALDATA TYPE STRING,
DEFAULT_VALUE TYPE STRING,
DATAELEM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SMB/S_OBJ_DEFINITION_FIELD_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_/SMB/S_OBJ_DEFINITION_FIELD_STR-PARAMETER_NAME sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-REF_TABLE sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-REF_FIELD sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-TECH_LANG_DEP sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-LOG_LANG_DEP sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-OPT_OUT sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-KEYFLAG sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-DESCRIPTION sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-DATAELEM sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-CENTRALDATA_ALIAS sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-CENTRALDATA_OBJECT sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-CENTRALDATA_PARAMETER sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-CENTRALDATA_TYPE sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-CENTRALDATA_TYPE_OBJ sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-DEFAULT_VALUE sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-EDITABLE_PROPERTIES sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-REF_TABLE sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-REF_FIELD sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-LANG_DEP sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-OPT_OUT sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-KEYFLAG sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-DESCRIPTION sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-CENTRALDATA sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-DEFAULT_VALUE sy-vline 
WA_/SMB/S_OBJ_DEFINITION_FIELD_STR-DATAELEM sy-vline      INTO ld_text SEPARATED BY SPACE.

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