ABAP Select data from SAP table RODDFIELD into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RODDFIELD 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 RODDFIELD. 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 RODDFIELD 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_RODDFIELD TYPE STANDARD TABLE OF RODDFIELD,
      WA_RODDFIELD TYPE RODDFIELD,
      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: <RODDFIELD> TYPE RODDFIELD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RODDFIELD
*  INTO TABLE @DATA(IT_RODDFIELD2).
*--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_RODDFIELD INDEX 1 INTO DATA(WA_RODDFIELD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RODDFIELD>-OLTPSOURCE = 1.
<RODDFIELD>-OBJVERS = 1.
<RODDFIELD>-FIELD = 1.
<RODDFIELD>-SELECTION = 1.
<RODDFIELD>-UNIFIELDNM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RODDFIELD-STORNO, sy-vline,
  WA_RODDFIELD-POSITION, sy-vline,
  WA_RODDFIELD-KEYFLAG, sy-vline,
  WA_RODDFIELD-DOMNAME, sy-vline,
  WA_RODDFIELD-INTTYPE, sy-vline,
  WA_RODDFIELD-INTLEN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RODDFIELD 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_RODDFIELD 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_RODDFIELD INTO WA_RODDFIELD.


*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 DTYPE, internal->external for field DATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_RODDFIELD-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RODDFIELD-DATATYPE.
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_RODDFIELD_STR, 
OLTPSOURCE TYPE STRING,
OBJVERS TYPE STRING,
FIELD TYPE STRING,
SELECTION TYPE STRING,
UNIFIELDNM TYPE STRING,
STORNO TYPE STRING,
POSITION TYPE STRING,
KEYFLAG TYPE STRING,
DOMNAME TYPE STRING,
INTTYPE TYPE STRING,
INTLEN TYPE STRING,
REFFIELD TYPE STRING,
DATATYPE TYPE STRING,
DTELNM TYPE STRING,
LENG TYPE STRING,
CHECKTABLE TYPE STRING,
ROUTPUTLEN TYPE STRING,
DECIMALS TYPE STRING,
CONVEXIT TYPE STRING,
SELOPTS TYPE STRING,
ORIGIN TYPE STRING,
LOWERCASE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RODDFIELD_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_RODDFIELD_STR-OLTPSOURCE sy-vline 
WA_RODDFIELD_STR-OBJVERS sy-vline 
WA_RODDFIELD_STR-FIELD sy-vline 
WA_RODDFIELD_STR-SELECTION sy-vline 
WA_RODDFIELD_STR-UNIFIELDNM sy-vline 
WA_RODDFIELD_STR-STORNO sy-vline 
WA_RODDFIELD_STR-POSITION sy-vline 
WA_RODDFIELD_STR-KEYFLAG sy-vline 
WA_RODDFIELD_STR-DOMNAME sy-vline 
WA_RODDFIELD_STR-INTTYPE sy-vline 
WA_RODDFIELD_STR-INTLEN sy-vline 
WA_RODDFIELD_STR-REFFIELD sy-vline 
WA_RODDFIELD_STR-DATATYPE sy-vline 
WA_RODDFIELD_STR-DTELNM sy-vline 
WA_RODDFIELD_STR-LENG sy-vline 
WA_RODDFIELD_STR-CHECKTABLE sy-vline 
WA_RODDFIELD_STR-ROUTPUTLEN sy-vline 
WA_RODDFIELD_STR-DECIMALS sy-vline 
WA_RODDFIELD_STR-CONVEXIT sy-vline 
WA_RODDFIELD_STR-SELOPTS sy-vline 
WA_RODDFIELD_STR-ORIGIN sy-vline 
WA_RODDFIELD_STR-LOWERCASE sy-vline      INTO ld_text SEPARATED BY SPACE.

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