ABAP Select data from SAP table VN1ROUTINGSPOOL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VN1ROUTINGSPOOL 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 VN1ROUTINGSPOOL. 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 VN1ROUTINGSPOOL 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_VN1ROUTINGSPOOL TYPE STANDARD TABLE OF VN1ROUTINGSPOOL,
      WA_VN1ROUTINGSPOOL TYPE VN1ROUTINGSPOOL,
      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: <VN1ROUTINGSPOOL> TYPE VN1ROUTINGSPOOL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VN1ROUTINGSPOOL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VN1ROUTINGSPOOL
  INTO TABLE IT_VN1ROUTINGSPOOL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VN1ROUTINGSPOOL
*  INTO TABLE @DATA(IT_VN1ROUTINGSPOOL2).
*--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_VN1ROUTINGSPOOL INDEX 1 INTO DATA(WA_VN1ROUTINGSPOOL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VN1ROUTINGSPOOL ASSIGNING <VN1ROUTINGSPOOL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VN1ROUTINGSPOOL>-MANDT = 1.
<VN1ROUTINGSPOOL>-EINRI = 1.
<VN1ROUTINGSPOOL>-ROUTINGNR = 1.
<VN1ROUTINGSPOOL>-DOKAR = 1.
<VN1ROUTINGSPOOL>-DOKNR = 1.

ENDLOOP.

LOOP AT IT_VN1ROUTINGSPOOL INTO WA_VN1ROUTINGSPOOL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VN1ROUTINGSPOOL-DOKVR, sy-vline,
  WA_VN1ROUTINGSPOOL-DOKTL, sy-vline,
  WA_VN1ROUTINGSPOOL-DTID, sy-vline,
  WA_VN1ROUTINGSPOOL-AETITLEFROM, sy-vline,
  WA_VN1ROUTINGSPOOL-AETITLETO, sy-vline,
  WA_VN1ROUTINGSPOOL-ROUTINGDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VN1ROUTINGSPOOL 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_VN1ROUTINGSPOOL 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_VN1ROUTINGSPOOL INTO WA_VN1ROUTINGSPOOL.


*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 EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VN1ROUTINGSPOOL-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1ROUTINGSPOOL-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VN1ROUTINGSPOOL-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1ROUTINGSPOOL-DOKNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PATID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VN1ROUTINGSPOOL-PATID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VN1ROUTINGSPOOL-PATID.
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_VN1ROUTINGSPOOL_STR, 
MANDT TYPE STRING,
EINRI TYPE STRING,
ROUTINGNR TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
DTID TYPE STRING,
AETITLEFROM TYPE STRING,
AETITLETO TYPE STRING,
ROUTINGDATE TYPE STRING,
RSDATE TYPE STRING,
RSTIME TYPE STRING,
ROUTED TYPE STRING,
PATID TYPE STRING,
ROUTYP TYPE STRING,
ROUTINGTIME TYPE STRING,
TRIALS TYPE STRING,
ERUSR TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VN1ROUTINGSPOOL_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_VN1ROUTINGSPOOL_STR-MANDT sy-vline 
WA_VN1ROUTINGSPOOL_STR-EINRI sy-vline 
WA_VN1ROUTINGSPOOL_STR-ROUTINGNR sy-vline 
WA_VN1ROUTINGSPOOL_STR-DOKAR sy-vline 
WA_VN1ROUTINGSPOOL_STR-DOKNR sy-vline 
WA_VN1ROUTINGSPOOL_STR-DOKVR sy-vline 
WA_VN1ROUTINGSPOOL_STR-DOKTL sy-vline 
WA_VN1ROUTINGSPOOL_STR-DTID sy-vline 
WA_VN1ROUTINGSPOOL_STR-AETITLEFROM sy-vline 
WA_VN1ROUTINGSPOOL_STR-AETITLETO sy-vline 
WA_VN1ROUTINGSPOOL_STR-ROUTINGDATE sy-vline 
WA_VN1ROUTINGSPOOL_STR-RSDATE sy-vline 
WA_VN1ROUTINGSPOOL_STR-RSTIME sy-vline 
WA_VN1ROUTINGSPOOL_STR-ROUTED sy-vline 
WA_VN1ROUTINGSPOOL_STR-PATID sy-vline 
WA_VN1ROUTINGSPOOL_STR-ROUTYP sy-vline 
WA_VN1ROUTINGSPOOL_STR-ROUTINGTIME sy-vline 
WA_VN1ROUTINGSPOOL_STR-TRIALS sy-vline 
WA_VN1ROUTINGSPOOL_STR-ERUSR sy-vline 
WA_VN1ROUTINGSPOOL_STR-ERDAT sy-vline 
WA_VN1ROUTINGSPOOL_STR-ERTIM sy-vline 
WA_VN1ROUTINGSPOOL_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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