ABAP Select data from SAP table RDGEXCEPT_ASSIGN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RDGEXCEPT_ASSIGN
*  INTO TABLE @DATA(IT_RDGEXCEPT_ASSIGN2).
*--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_RDGEXCEPT_ASSIGN INDEX 1 INTO DATA(WA_RDGEXCEPT_ASSIGN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RDGEXCEPT_ASSIGN>-VBELN = 1.
<RDGEXCEPT_ASSIGN>-POSNR = 1.
<RDGEXCEPT_ASSIGN>-MATNR = 1.
<RDGEXCEPT_ASSIGN>-VENUM = 1.
<RDGEXCEPT_ASSIGN>-VEPOS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RDGEXCEPT_ASSIGN-EXCEPTOBJECT, sy-vline,
  WA_RDGEXCEPT_ASSIGN-TABNAME, sy-vline,
  WA_RDGEXCEPT_ASSIGN-FIELDNAME, sy-vline,
  WA_RDGEXCEPT_ASSIGN-MANDT, sy-vline,
  WA_RDGEXCEPT_ASSIGN-LWDG, sy-vline,
  WA_RDGEXCEPT_ASSIGN-EXCEPTID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RDGEXCEPT_ASSIGN 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_RDGEXCEPT_ASSIGN 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_RDGEXCEPT_ASSIGN INTO WA_RDGEXCEPT_ASSIGN.


*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 ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RDGEXCEPT_ASSIGN-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDGEXCEPT_ASSIGN-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RDGEXCEPT_ASSIGN-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDGEXCEPT_ASSIGN-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VENUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RDGEXCEPT_ASSIGN-VENUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDGEXCEPT_ASSIGN-VENUM.
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_RDGEXCEPT_ASSIGN_STR, 
VBELN TYPE STRING,
POSNR TYPE STRING,
MATNR TYPE STRING,
VENUM TYPE STRING,
VEPOS TYPE STRING,
EXCEPTOBJECT TYPE STRING,
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
MANDT TYPE STRING,
LWDG TYPE STRING,
EXCEPTID TYPE STRING,
VERSION TYPE STRING,
DELFLG TYPE STRING,
BLOCKEDFLG TYPE STRING,
DISTRIBFLG TYPE STRING,
CRDAT TYPE STRING,
CRNAM TYPE STRING,
UPDDAT TYPE STRING,
UPDNAM TYPE STRING,
EXCEPT_VALFR TYPE STRING,
EXCEPT_VALTO TYPE STRING,
ENTPR_SPECFLG TYPE STRING,
UNNO_SPECFLG TYPE STRING,
CNTRY_SPECFLG TYPE STRING,
EXCEPTPROFILE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RDGEXCEPT_ASSIGN_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_RDGEXCEPT_ASSIGN_STR-VBELN sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-POSNR sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-MATNR sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-VENUM sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-VEPOS sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-EXCEPTOBJECT sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-TABNAME sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-FIELDNAME sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-MANDT sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-LWDG sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-EXCEPTID sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-VERSION sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-DELFLG sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-BLOCKEDFLG sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-DISTRIBFLG sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-CRDAT sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-CRNAM sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-UPDDAT sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-UPDNAM sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-EXCEPT_VALFR sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-EXCEPT_VALTO sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-ENTPR_SPECFLG sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-UNNO_SPECFLG sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-CNTRY_SPECFLG sy-vline 
WA_RDGEXCEPT_ASSIGN_STR-EXCEPTPROFILE sy-vline      INTO ld_text SEPARATED BY SPACE.

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