ABAP Select data from SAP table RODYNP201 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RODYNP201 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 RODYNP201. 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 RODYNP201 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_RODYNP201 TYPE STANDARD TABLE OF RODYNP201,
      WA_RODYNP201 TYPE RODYNP201,
      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: <RODYNP201> TYPE RODYNP201.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RODYNP201.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RODYNP201
  INTO TABLE IT_RODYNP201.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RODYNP201
*  INTO TABLE @DATA(IT_RODYNP2012).
*--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_RODYNP201 INDEX 1 INTO DATA(WA_RODYNP2012).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RODYNP201 ASSIGNING <RODYNP201>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RODYNP201>-ISOURCE = 1.
<RODYNP201>-TXTLG = 1.
<RODYNP201>-STRUCTUR = 1.
<RODYNP201>-FIELDNM = 1.
<RODYNP201>-DTELNM = 1.

ENDLOOP.

LOOP AT IT_RODYNP201 INTO WA_RODYNP201.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RODYNP201-IOBJNM, sy-vline,
  WA_RODYNP201-IOBJTP, sy-vline,
  WA_RODYNP201-TEXT, sy-vline,
  WA_RODYNP201-UNIFIELDNM, sy-vline,
  WA_RODYNP201-SELECTION, sy-vline,
  WA_RODYNP201-DTELFL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RODYNP201 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_RODYNP201 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_RODYNP201 INTO WA_RODYNP201.


*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_RODYNP201_STR, 
ISOURCE TYPE STRING,
TXTLG TYPE STRING,
STRUCTUR TYPE STRING,
FIELDNM TYPE STRING,
DTELNM TYPE STRING,
IOBJNM TYPE STRING,
IOBJTP TYPE STRING,
TEXT TYPE STRING,
UNIFIELDNM TYPE STRING,
SELECTION TYPE STRING,
DTELFL TYPE STRING,
DOMAFL TYPE STRING,
FIELDFL TYPE STRING,
TECHFL TYPE STRING,
MARKED TYPE STRING,
APPLNM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RODYNP201_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_RODYNP201_STR-ISOURCE sy-vline 
WA_RODYNP201_STR-TXTLG sy-vline 
WA_RODYNP201_STR-STRUCTUR sy-vline 
WA_RODYNP201_STR-FIELDNM sy-vline 
WA_RODYNP201_STR-DTELNM sy-vline 
WA_RODYNP201_STR-IOBJNM sy-vline 
WA_RODYNP201_STR-IOBJTP sy-vline 
WA_RODYNP201_STR-TEXT sy-vline 
WA_RODYNP201_STR-UNIFIELDNM sy-vline 
WA_RODYNP201_STR-SELECTION sy-vline 
WA_RODYNP201_STR-DTELFL sy-vline 
WA_RODYNP201_STR-DOMAFL sy-vline 
WA_RODYNP201_STR-FIELDFL sy-vline 
WA_RODYNP201_STR-TECHFL sy-vline 
WA_RODYNP201_STR-MARKED sy-vline 
WA_RODYNP201_STR-APPLNM sy-vline      INTO ld_text SEPARATED BY SPACE.

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