ABAP Select data from SAP table RN2DOC_SAPSTORAGEDATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN2DOC_SAPSTORAGEDATA 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 RN2DOC_SAPSTORAGEDATA. 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 RN2DOC_SAPSTORAGEDATA 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_RN2DOC_SAPSTORAGEDATA TYPE STANDARD TABLE OF RN2DOC_SAPSTORAGEDATA,
      WA_RN2DOC_SAPSTORAGEDATA TYPE RN2DOC_SAPSTORAGEDATA,
      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: <RN2DOC_SAPSTORAGEDATA> TYPE RN2DOC_SAPSTORAGEDATA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN2DOC_SAPSTORAGEDATA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN2DOC_SAPSTORAGEDATA
  INTO TABLE IT_RN2DOC_SAPSTORAGEDATA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN2DOC_SAPSTORAGEDATA
*  INTO TABLE @DATA(IT_RN2DOC_SAPSTORAGEDATA2).
*--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_RN2DOC_SAPSTORAGEDATA INDEX 1 INTO DATA(WA_RN2DOC_SAPSTORAGEDATA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN2DOC_SAPSTORAGEDATA ASSIGNING <RN2DOC_SAPSTORAGEDATA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN2DOC_SAPSTORAGEDATA>-HOSTNAME = 1.
<RN2DOC_SAPSTORAGEDATA>-DOCUMENTFILE = 1.
<RN2DOC_SAPSTORAGEDATA>-DELETEVALUE = 1.
<RN2DOC_SAPSTORAGEDATA>-DOCUMENTTYPE = 1.
<RN2DOC_SAPSTORAGEDATA>-DOCUMENTNUMBER = 1.

ENDLOOP.

LOOP AT IT_RN2DOC_SAPSTORAGEDATA INTO WA_RN2DOC_SAPSTORAGEDATA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN2DOC_SAPSTORAGEDATA-DOCUMENTPART, sy-vline,
  WA_RN2DOC_SAPSTORAGEDATA-DOCUMENTVERSION, sy-vline,
  WA_RN2DOC_SAPSTORAGEDATA-ORIGINALTYPE, sy-vline,
  WA_RN2DOC_SAPSTORAGEDATA-SOURCEDATACARRIER, sy-vline,
  WA_RN2DOC_SAPSTORAGEDATA-STORAGECATEGORY, sy-vline,
  WA_RN2DOC_SAPSTORAGEDATA-WSAPPLICATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN2DOC_SAPSTORAGEDATA 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_RN2DOC_SAPSTORAGEDATA 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_RN2DOC_SAPSTORAGEDATA INTO WA_RN2DOC_SAPSTORAGEDATA.


*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 DOCUMENTNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN2DOC_SAPSTORAGEDATA-DOCUMENTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2DOC_SAPSTORAGEDATA-DOCUMENTNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RN2DOC_SAPSTORAGEDATA-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2DOC_SAPSTORAGEDATA-LANGUAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field CREATED_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_RN2DOC_SAPSTORAGEDATA-CREATED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2DOC_SAPSTORAGEDATA-CREATED_AT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTLC, internal->external for field CHANGED_AT
CALL FUNCTION 'CONVERSION_EXIT_TSTLC_OUTPUT'
  EXPORTING
    input =                      WA_RN2DOC_SAPSTORAGEDATA-CHANGED_AT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN2DOC_SAPSTORAGEDATA-CHANGED_AT.
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_RN2DOC_SAPSTORAGEDATA_STR, 
HOSTNAME TYPE STRING,
DOCUMENTFILE TYPE STRING,
DELETEVALUE TYPE STRING,
DOCUMENTTYPE TYPE STRING,
DOCUMENTNUMBER TYPE STRING,
DOCUMENTPART TYPE STRING,
DOCUMENTVERSION TYPE STRING,
ORIGINALTYPE TYPE STRING,
SOURCEDATACARRIER TYPE STRING,
STORAGECATEGORY TYPE STRING,
WSAPPLICATION TYPE STRING,
DOCPATH TYPE STRING,
DOCFILE TYPE STRING,
STATUSINTERN TYPE STRING,
STATUSEXTERN TYPE STRING,
STATUSLOG TYPE STRING,
APPLICATION_ID TYPE STRING,
FILE_ID TYPE STRING,
DESCRIPTION TYPE STRING,
LANGUAGE TYPE STRING,
CHECKEDIN TYPE STRING,
ACTIVE_VERSION TYPE STRING,
CREATED_AT TYPE STRING,
CHANGED_AT TYPE STRING,
CREATED_BY TYPE STRING,
CHANGED_BY TYPE STRING,
CONTENT_DESCRIPTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN2DOC_SAPSTORAGEDATA_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_RN2DOC_SAPSTORAGEDATA_STR-HOSTNAME sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-DOCUMENTFILE sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-DELETEVALUE sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-DOCUMENTTYPE sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-DOCUMENTNUMBER sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-DOCUMENTPART sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-DOCUMENTVERSION sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-ORIGINALTYPE sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-SOURCEDATACARRIER sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-STORAGECATEGORY sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-WSAPPLICATION sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-DOCPATH sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-DOCFILE sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-STATUSINTERN sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-STATUSEXTERN sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-STATUSLOG sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-APPLICATION_ID sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-FILE_ID sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-DESCRIPTION sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-LANGUAGE sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-CHECKEDIN sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-ACTIVE_VERSION sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-CREATED_AT sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-CHANGED_AT sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-CREATED_BY sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-CHANGED_BY sy-vline 
WA_RN2DOC_SAPSTORAGEDATA_STR-CONTENT_DESCRIPTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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