ABAP Select data from SAP table RNV2000_ACCIDENT into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNV2000_ACCIDENT 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 RNV2000_ACCIDENT. 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 RNV2000_ACCIDENT 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_RNV2000_ACCIDENT TYPE STANDARD TABLE OF RNV2000_ACCIDENT,
      WA_RNV2000_ACCIDENT TYPE RNV2000_ACCIDENT,
      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: <RNV2000_ACCIDENT> TYPE RNV2000_ACCIDENT.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RNV2000_ACCIDENT.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RNV2000_ACCIDENT
  INTO TABLE IT_RNV2000_ACCIDENT.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNV2000_ACCIDENT
*  INTO TABLE @DATA(IT_RNV2000_ACCIDENT2).
*--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_RNV2000_ACCIDENT INDEX 1 INTO DATA(WA_RNV2000_ACCIDENT2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RNV2000_ACCIDENT ASSIGNING <RNV2000_ACCIDENT>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNV2000_ACCIDENT>-UNFKZ = 1.
<RNV2000_ACCIDENT>-UNFDT = 1.
<RNV2000_ACCIDENT>-UNFZT = 1.
<RNV2000_ACCIDENT>-UNFOR = 1.
<RNV2000_ACCIDENT>-UNFNR = 1.

ENDLOOP.

LOOP AT IT_RNV2000_ACCIDENT INTO WA_RNV2000_ACCIDENT.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNV2000_ACCIDENT-UNFRN, sy-vline,
  WA_RNV2000_ACCIDENT-UNFVS, sy-vline,
  WA_RNV2000_ACCIDENT-UNFRT, sy-vline,
  WA_RNV2000_ACCIDENT-UNFAV, sy-vline,
  WA_RNV2000_ACCIDENT-TEXT_UNF, sy-vline,
  WA_RNV2000_ACCIDENT-PLSNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNV2000_ACCIDENT 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_RNV2000_ACCIDENT 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_RNV2000_ACCIDENT INTO WA_RNV2000_ACCIDENT.


*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 UNFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNV2000_ACCIDENT-UNFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNV2000_ACCIDENT-UNFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field UNFRN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNV2000_ACCIDENT-UNFRN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNV2000_ACCIDENT-UNFRN.
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_RNV2000_ACCIDENT_STR, 
UNFKZ TYPE STRING,
UNFDT TYPE STRING,
UNFZT TYPE STRING,
UNFOR TYPE STRING,
UNFNR TYPE STRING,
UNFRN TYPE STRING,
UNFVS TYPE STRING,
UNFRT TYPE STRING,
UNFAV TYPE STRING,
TEXT_UNF TYPE STRING,
PLSNR TYPE STRING,
UNFKZX TYPE STRING,
UNFDTX TYPE STRING,
UNFZTX TYPE STRING,
UNFORX TYPE STRING,
UNFNRX TYPE STRING,
UNFRNX TYPE STRING,
UNFVSX TYPE STRING,
UNFRTX TYPE STRING,
UNFAVX TYPE STRING,
TEXT_UNFX TYPE STRING,
PLSNRX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNV2000_ACCIDENT_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_RNV2000_ACCIDENT_STR-UNFKZ sy-vline 
WA_RNV2000_ACCIDENT_STR-UNFDT sy-vline 
WA_RNV2000_ACCIDENT_STR-UNFZT sy-vline 
WA_RNV2000_ACCIDENT_STR-UNFOR sy-vline 
WA_RNV2000_ACCIDENT_STR-UNFNR sy-vline 
WA_RNV2000_ACCIDENT_STR-UNFRN sy-vline 
WA_RNV2000_ACCIDENT_STR-UNFVS sy-vline 
WA_RNV2000_ACCIDENT_STR-UNFRT sy-vline 
WA_RNV2000_ACCIDENT_STR-UNFAV sy-vline 
WA_RNV2000_ACCIDENT_STR-TEXT_UNF sy-vline 
WA_RNV2000_ACCIDENT_STR-PLSNR sy-vline 
WA_RNV2000_ACCIDENT_STR-UNFKZX sy-vline 
WA_RNV2000_ACCIDENT_STR-UNFDTX sy-vline 
WA_RNV2000_ACCIDENT_STR-UNFZTX sy-vline 
WA_RNV2000_ACCIDENT_STR-UNFORX sy-vline 
WA_RNV2000_ACCIDENT_STR-UNFNRX sy-vline 
WA_RNV2000_ACCIDENT_STR-UNFRNX sy-vline 
WA_RNV2000_ACCIDENT_STR-UNFVSX sy-vline 
WA_RNV2000_ACCIDENT_STR-UNFRTX sy-vline 
WA_RNV2000_ACCIDENT_STR-UNFAVX sy-vline 
WA_RNV2000_ACCIDENT_STR-TEXT_UNFX sy-vline 
WA_RNV2000_ACCIDENT_STR-PLSNRX sy-vline      INTO ld_text SEPARATED BY SPACE.

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