ABAP Select data from SAP table REYC_OBJ_ASSIGN_X into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REYC_OBJ_ASSIGN_X
*  INTO TABLE @DATA(IT_REYC_OBJ_ASSIGN_X2).
*--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_REYC_OBJ_ASSIGN_X INDEX 1 INTO DATA(WA_REYC_OBJ_ASSIGN_X2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REYC_OBJ_ASSIGN_X>-MANDT = 1.
<REYC_OBJ_ASSIGN_X>-OBJNRSRC = 1.
<REYC_OBJ_ASSIGN_X>-OBJASSTYPE = 1.
<REYC_OBJ_ASSIGN_X>-OBJNRTRG = 1.
<REYC_OBJ_ASSIGN_X>-VALIDFROM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REYC_OBJ_ASSIGN_X-XOBJASSTYPE, sy-vline,
  WA_REYC_OBJ_ASSIGN_X-XOBJTYPESRC, sy-vline,
  WA_REYC_OBJ_ASSIGN_X-XOBJTYPETRG, sy-vline,
  WA_REYC_OBJ_ASSIGN_X-IDENTSRC, sy-vline,
  WA_REYC_OBJ_ASSIGN_X-IDENTTRG, sy-vline,
  WA_REYC_OBJ_ASSIGN_X-IDENTKEYSRC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REYC_OBJ_ASSIGN_X 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_REYC_OBJ_ASSIGN_X 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_REYC_OBJ_ASSIGN_X INTO WA_REYC_OBJ_ASSIGN_X.


*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_REYC_OBJ_ASSIGN_X_STR, 
MANDT TYPE STRING,
OBJNRSRC TYPE STRING,
OBJASSTYPE TYPE STRING,
OBJNRTRG TYPE STRING,
VALIDFROM TYPE STRING,
XOBJASSTYPE TYPE STRING,
XOBJTYPESRC TYPE STRING,
XOBJTYPETRG TYPE STRING,
IDENTSRC TYPE STRING,
IDENTTRG TYPE STRING,
IDENTKEYSRC TYPE STRING,
IDENTKEYTRG TYPE STRING,
DESCRIPTIONSRC TYPE STRING,
DESCRIPTIONTRG TYPE STRING,
XLOBJTYPESRC TYPE STRING,
XLOBJTYPETRG TYPE STRING,
HASNOTE TYPE STRING,
RSOBJTYPE TYPE STRING,
XRSOBJTYPE TYPE STRING,
OBJTYPESRC TYPE STRING,
OBJTYPETRG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REYC_OBJ_ASSIGN_X_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_REYC_OBJ_ASSIGN_X_STR-MANDT sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-OBJNRSRC sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-OBJASSTYPE sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-OBJNRTRG sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-VALIDFROM sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-XOBJASSTYPE sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-XOBJTYPESRC sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-XOBJTYPETRG sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-IDENTSRC sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-IDENTTRG sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-IDENTKEYSRC sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-IDENTKEYTRG sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-DESCRIPTIONSRC sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-DESCRIPTIONTRG sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-XLOBJTYPESRC sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-XLOBJTYPETRG sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-HASNOTE sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-RSOBJTYPE sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-XRSOBJTYPE sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-OBJTYPESRC sy-vline 
WA_REYC_OBJ_ASSIGN_X_STR-OBJTYPETRG sy-vline      INTO ld_text SEPARATED BY SPACE.

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