ABAP Select data from SAP table /MFND/C_OM001P into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /MFND/C_OM001P 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 /MFND/C_OM001P. 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 /MFND/C_OM001P 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_/MFND/C_OM001P TYPE STANDARD TABLE OF /MFND/C_OM001P,
      WA_/MFND/C_OM001P TYPE /MFND/C_OM001P,
      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: </MFND/C_OM001P> TYPE /MFND/C_OM001P.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/MFND/C_OM001P.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /MFND/C_OM001P
  INTO TABLE IT_/MFND/C_OM001P.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MFND/C_OM001P
*  INTO TABLE @DATA(IT_/MFND/C_OM001P2).
*--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_/MFND/C_OM001P INDEX 1 INTO DATA(WA_/MFND/C_OM001P2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/MFND/C_OM001P ASSIGNING </MFND/C_OM001P>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MFND/C_OM001P>-MANDT = 1.
</MFND/C_OM001P>-PROPERTY_ID = 1.
</MFND/C_OM001P>-PROPERTY_NAME = 1.
</MFND/C_OM001P>-EDM_CORE_TYPE = 1.
</MFND/C_OM001P>-IS_KEY = 1.

ENDLOOP.

LOOP AT IT_/MFND/C_OM001P INTO WA_/MFND/C_OM001P.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MFND/C_OM001P-CREATABLE, sy-vline,
  WA_/MFND/C_OM001P-UPDATABLE, sy-vline,
  WA_/MFND/C_OM001P-SORTABLE, sy-vline,
  WA_/MFND/C_OM001P-NULLABLE, sy-vline,
  WA_/MFND/C_OM001P-FILTERABLE, sy-vline,
  WA_/MFND/C_OM001P-PROPERTY_SCALE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MFND/C_OM001P 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_/MFND/C_OM001P 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_/MFND/C_OM001P INTO WA_/MFND/C_OM001P.


*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_/MFND/C_OM001P_STR, 
MANDT TYPE STRING,
PROPERTY_ID TYPE STRING,
PROPERTY_NAME TYPE STRING,
EDM_CORE_TYPE TYPE STRING,
IS_KEY TYPE STRING,
CREATABLE TYPE STRING,
UPDATABLE TYPE STRING,
SORTABLE TYPE STRING,
NULLABLE TYPE STRING,
FILTERABLE TYPE STRING,
PROPERTY_SCALE TYPE STRING,
PROPERTY_MAX_LENGTH TYPE STRING,
PROPERTY_PRECISION TYPE STRING,
AS_CONTENT_TYPE TYPE STRING,
AS_ETAG TYPE STRING,
ABAP_FIELDNAME TYPE STRING,
CONVEXIT TYPE STRING,
SORT_ORDER TYPE STRING,
ENTITY_TYPE_ID TYPE STRING,
MOBILE_APP TYPE STRING,
FLAG_DISABLED TYPE STRING,
CREATED_BY TYPE STRING,
CREATED_TS TYPE STRING,
CHANGED_BY TYPE STRING,
CHANGED_TS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MFND/C_OM001P_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_/MFND/C_OM001P_STR-MANDT sy-vline 
WA_/MFND/C_OM001P_STR-PROPERTY_ID sy-vline 
WA_/MFND/C_OM001P_STR-PROPERTY_NAME sy-vline 
WA_/MFND/C_OM001P_STR-EDM_CORE_TYPE sy-vline 
WA_/MFND/C_OM001P_STR-IS_KEY sy-vline 
WA_/MFND/C_OM001P_STR-CREATABLE sy-vline 
WA_/MFND/C_OM001P_STR-UPDATABLE sy-vline 
WA_/MFND/C_OM001P_STR-SORTABLE sy-vline 
WA_/MFND/C_OM001P_STR-NULLABLE sy-vline 
WA_/MFND/C_OM001P_STR-FILTERABLE sy-vline 
WA_/MFND/C_OM001P_STR-PROPERTY_SCALE sy-vline 
WA_/MFND/C_OM001P_STR-PROPERTY_MAX_LENGTH sy-vline 
WA_/MFND/C_OM001P_STR-PROPERTY_PRECISION sy-vline 
WA_/MFND/C_OM001P_STR-AS_CONTENT_TYPE sy-vline 
WA_/MFND/C_OM001P_STR-AS_ETAG sy-vline 
WA_/MFND/C_OM001P_STR-ABAP_FIELDNAME sy-vline 
WA_/MFND/C_OM001P_STR-CONVEXIT sy-vline 
WA_/MFND/C_OM001P_STR-SORT_ORDER sy-vline 
WA_/MFND/C_OM001P_STR-ENTITY_TYPE_ID sy-vline 
WA_/MFND/C_OM001P_STR-MOBILE_APP sy-vline 
WA_/MFND/C_OM001P_STR-FLAG_DISABLED sy-vline 
WA_/MFND/C_OM001P_STR-CREATED_BY sy-vline 
WA_/MFND/C_OM001P_STR-CREATED_TS sy-vline 
WA_/MFND/C_OM001P_STR-CHANGED_BY sy-vline 
WA_/MFND/C_OM001P_STR-CHANGED_TS sy-vline      INTO ld_text SEPARATED BY SPACE.

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