ABAP Select data from SAP table RECP_OBJ_ASSIGN_C into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECP_OBJ_ASSIGN_C
*  INTO TABLE @DATA(IT_RECP_OBJ_ASSIGN_C2).
*--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_RECP_OBJ_ASSIGN_C INDEX 1 INTO DATA(WA_RECP_OBJ_ASSIGN_C2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RECP_OBJ_ASSIGN_C-VALIDTO, sy-vline,
  WA_RECP_OBJ_ASSIGN_C-ASSIGNONLYINFO, sy-vline,
  WA_RECP_OBJ_ASSIGN_C-OBJNRSRCARCH, sy-vline,
  WA_RECP_OBJ_ASSIGN_C-FLGENTYPE, sy-vline,
  WA_RECP_OBJ_ASSIGN_C-ISMAINASSET, sy-vline,
  WA_RECP_OBJ_ASSIGN_C-MEASVALUE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RECP_OBJ_ASSIGN_C 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_RECP_OBJ_ASSIGN_C 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_RECP_OBJ_ASSIGN_C INTO WA_RECP_OBJ_ASSIGN_C.


*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 REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_RECP_OBJ_ASSIGN_C-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECP_OBJ_ASSIGN_C-VALIDTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEASUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RECP_OBJ_ASSIGN_C-MEASUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECP_OBJ_ASSIGN_C-MEASUNIT.
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_RECP_OBJ_ASSIGN_C_STR, 
MANDT TYPE STRING,
OBJNRSRC TYPE STRING,
OBJASSTYPE TYPE STRING,
OBJNRTRG TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
ASSIGNONLYINFO TYPE STRING,
OBJNRSRCARCH TYPE STRING,
FLGENTYPE TYPE STRING,
ISMAINASSET TYPE STRING,
MEASVALUE TYPE STRING,
MEASUNIT TYPE STRING,
ISMULTIASSGEN TYPE STRING,
POSSDATEFROM TYPE STRING,
POSSDATETO TYPE STRING,
ISDETERMOPTRATE TYPE STRING,
PEPLANNEDDATE TYPE STRING,
PEEFFECTDATE TYPE STRING,
PELOCATION TYPE STRING,
ISLEADINGOBJECT 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,
XDATERANGE TYPE STRING,
MEASUNIT_OUT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECP_OBJ_ASSIGN_C_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_RECP_OBJ_ASSIGN_C_STR-MANDT sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-OBJNRSRC sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-OBJASSTYPE sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-OBJNRTRG sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-VALIDFROM sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-VALIDTO sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-ASSIGNONLYINFO sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-OBJNRSRCARCH sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-FLGENTYPE sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-ISMAINASSET sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-MEASVALUE sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-MEASUNIT sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-ISMULTIASSGEN sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-POSSDATEFROM sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-POSSDATETO sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-ISDETERMOPTRATE sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-PEPLANNEDDATE sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-PEEFFECTDATE sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-PELOCATION sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-ISLEADINGOBJECT sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-XOBJASSTYPE sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-XOBJTYPESRC sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-XOBJTYPETRG sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-IDENTSRC sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-IDENTTRG sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-IDENTKEYSRC sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-IDENTKEYTRG sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-DESCRIPTIONSRC sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-DESCRIPTIONTRG sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-XLOBJTYPESRC sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-XLOBJTYPETRG sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-HASNOTE sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-RSOBJTYPE sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-XRSOBJTYPE sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-OBJTYPESRC sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-OBJTYPETRG sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-XDATERANGE sy-vline 
WA_RECP_OBJ_ASSIGN_C_STR-MEASUNIT_OUT sy-vline      INTO ld_text SEPARATED BY SPACE.

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