ABAP Select data from SAP table RODYNP300 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 RODYNP300 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 RODYNP300. 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 RODYNP300 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_RODYNP300 TYPE STANDARD TABLE OF RODYNP300,
      WA_RODYNP300 TYPE RODYNP300,
      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: <RODYNP300> TYPE RODYNP300.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RODYNP300.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RODYNP300
  INTO TABLE IT_RODYNP300.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RODYNP300
*  INTO TABLE @DATA(IT_RODYNP3002).
*--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_RODYNP300 INDEX 1 INTO DATA(WA_RODYNP3002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RODYNP300 ASSIGNING <RODYNP300>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RODYNP300>-OLTPSOURCE = 1.
<RODYNP300>-TXTLG = 1.
<RODYNP300>-STRUCTURE = 1.
<RODYNP300>-FIELDNM = 1.
<RODYNP300>-FIELDT = 1.

ENDLOOP.

LOOP AT IT_RODYNP300 INTO WA_RODYNP300.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RODYNP300-SELECTION, sy-vline,
  WA_RODYNP300-HIDE, sy-vline,
  WA_RODYNP300-INVERT, sy-vline,
  WA_RODYNP300-DATATYPE, sy-vline,
  WA_RODYNP300-OBJVERS, sy-vline,
  WA_RODYNP300-TEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RODYNP300 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_RODYNP300 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_RODYNP300 INTO WA_RODYNP300.


*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_RODYNP300-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RODYNP300-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_RODYNP300_STR, 
OLTPSOURCE TYPE STRING,
TXTLG TYPE STRING,
STRUCTURE TYPE STRING,
FIELDNM TYPE STRING,
FIELDT TYPE STRING,
SELECTION TYPE STRING,
HIDE TYPE STRING,
INVERT TYPE STRING,
DATATYPE TYPE STRING,
OBJVERS TYPE STRING,
TEXT TYPE STRING,
DELTA TYPE STRING,
WORKMODE TYPE STRING,
DEVCLASS TYPE STRING,
VIRTFL TYPE STRING,
NOTEXREL TYPE STRING,
RECONCILIATION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RODYNP300_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_RODYNP300_STR-OLTPSOURCE sy-vline 
WA_RODYNP300_STR-TXTLG sy-vline 
WA_RODYNP300_STR-STRUCTURE sy-vline 
WA_RODYNP300_STR-FIELDNM sy-vline 
WA_RODYNP300_STR-FIELDT sy-vline 
WA_RODYNP300_STR-SELECTION sy-vline 
WA_RODYNP300_STR-HIDE sy-vline 
WA_RODYNP300_STR-INVERT sy-vline 
WA_RODYNP300_STR-DATATYPE sy-vline 
WA_RODYNP300_STR-OBJVERS sy-vline 
WA_RODYNP300_STR-TEXT sy-vline 
WA_RODYNP300_STR-DELTA sy-vline 
WA_RODYNP300_STR-WORKMODE sy-vline 
WA_RODYNP300_STR-DEVCLASS sy-vline 
WA_RODYNP300_STR-VIRTFL sy-vline 
WA_RODYNP300_STR-NOTEXREL sy-vline 
WA_RODYNP300_STR-RECONCILIATION sy-vline      INTO ld_text SEPARATED BY SPACE.

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