ABAP Select data from SAP table RN2WPVIEW016 into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN2WPVIEW016 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 RN2WPVIEW016. 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 RN2WPVIEW016 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_RN2WPVIEW016 TYPE STANDARD TABLE OF RN2WPVIEW016,
      WA_RN2WPVIEW016 TYPE RN2WPVIEW016,
      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: <RN2WPVIEW016> TYPE RN2WPVIEW016.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN2WPVIEW016.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN2WPVIEW016
  INTO TABLE IT_RN2WPVIEW016.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN2WPVIEW016
*  INTO TABLE @DATA(IT_RN2WPVIEW0162).
*--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_RN2WPVIEW016 INDEX 1 INTO DATA(WA_RN2WPVIEW0162).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN2WPVIEW016 ASSIGNING <RN2WPVIEW016>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN2WPVIEW016>-CONTEXT_ID = 1.
<RN2WPVIEW016>-CONTEXT_TYPE = 1.
<RN2WPVIEW016>-DICTAT_ID = 1.
<RN2WPVIEW016>-DICTAT_STATE = 1.
<RN2WPVIEW016>-PRIORITY = 1.

ENDLOOP.

LOOP AT IT_RN2WPVIEW016 INTO WA_RN2WPVIEW016.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN2WPVIEW016-DESCRIPTION, sy-vline,
  WA_RN2WPVIEW016-CREATE_DATE, sy-vline,
  WA_RN2WPVIEW016-CHANGE_DATE, sy-vline,
  WA_RN2WPVIEW016-EXPIRATION_DATE, sy-vline,
  WA_RN2WPVIEW016-RECORD_ID, sy-vline,
  WA_RN2WPVIEW016-SYSTEM_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN2WPVIEW016 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_RN2WPVIEW016 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_RN2WPVIEW016 INTO WA_RN2WPVIEW016.


*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 AUTHOR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2WPVIEW016-AUTHOR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2WPVIEW016-AUTHOR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TYPIST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2WPVIEW016-TYPIST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2WPVIEW016-TYPIST.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORGDO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2WPVIEW016-ORGDO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2WPVIEW016-ORGDO.
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_RN2WPVIEW016_STR, 
CONTEXT_ID TYPE STRING,
CONTEXT_TYPE TYPE STRING,
DICTAT_ID TYPE STRING,
DICTAT_STATE TYPE STRING,
PRIORITY TYPE STRING,
DESCRIPTION TYPE STRING,
CREATE_DATE TYPE STRING,
CHANGE_DATE TYPE STRING,
EXPIRATION_DATE TYPE STRING,
RECORD_ID TYPE STRING,
SYSTEM_ID TYPE STRING,
RECSTATE TYPE STRING,
RECTYPE TYPE STRING,
DURATION TYPE STRING,
AUTHOR TYPE STRING,
TYPIST TYPE STRING,
DTID TYPE STRING,
ORGDO TYPE STRING,
DODAT TYPE STRING,
CTXVMA TYPE STRING,
CTXPAT TYPE STRING,
CTXPMD TYPE STRING,
CTXWRD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN2WPVIEW016_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_RN2WPVIEW016_STR-CONTEXT_ID sy-vline 
WA_RN2WPVIEW016_STR-CONTEXT_TYPE sy-vline 
WA_RN2WPVIEW016_STR-DICTAT_ID sy-vline 
WA_RN2WPVIEW016_STR-DICTAT_STATE sy-vline 
WA_RN2WPVIEW016_STR-PRIORITY sy-vline 
WA_RN2WPVIEW016_STR-DESCRIPTION sy-vline 
WA_RN2WPVIEW016_STR-CREATE_DATE sy-vline 
WA_RN2WPVIEW016_STR-CHANGE_DATE sy-vline 
WA_RN2WPVIEW016_STR-EXPIRATION_DATE sy-vline 
WA_RN2WPVIEW016_STR-RECORD_ID sy-vline 
WA_RN2WPVIEW016_STR-SYSTEM_ID sy-vline 
WA_RN2WPVIEW016_STR-RECSTATE sy-vline 
WA_RN2WPVIEW016_STR-RECTYPE sy-vline 
WA_RN2WPVIEW016_STR-DURATION sy-vline 
WA_RN2WPVIEW016_STR-AUTHOR sy-vline 
WA_RN2WPVIEW016_STR-TYPIST sy-vline 
WA_RN2WPVIEW016_STR-DTID sy-vline 
WA_RN2WPVIEW016_STR-ORGDO sy-vline 
WA_RN2WPVIEW016_STR-DODAT sy-vline 
WA_RN2WPVIEW016_STR-CTXVMA sy-vline 
WA_RN2WPVIEW016_STR-CTXPAT sy-vline 
WA_RN2WPVIEW016_STR-CTXPMD sy-vline 
WA_RN2WPVIEW016_STR-CTXWRD sy-vline      INTO ld_text SEPARATED BY SPACE.

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