Is there a sql function taking first 10 letters, even if it is less than 10

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  Hello
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  What about a SQL?

  satyaki>
  satyaki>select * from v$version;
  
  BANNER
  ----------------------------------------------------------------
  Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - Prod
  PL/SQL Release 10.2.0.3.0 - Production
  CORE    10.2.0.3.0      Production
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   by rownum<='||&num).EXTRACT('//text()') res
    2  from dual;
  Enter value for str: satyaki
  Enter value for num: 1
  old   1: select DBMS_XMLGEN.getxmltype ('SELECT '||chr(39)||'&str'||chr(39)||' cola FROM dual connec
  new   1: select DBMS_XMLGEN.getxmltype ('SELECT '||chr(39)||'satyaki'||chr(39)||' cola FROM dual con
  
  RES
  ----------------------------------------------------------------------------------------------------
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  Elapsed: 00:00:00.07
  satyaki>/
  Enter value for str: satyaki
  Enter value for num: 2
  old   1: select DBMS_XMLGEN.getxmltype ('SELECT '||chr(39)||'&str'||chr(39)||' cola FROM dual connec
  new   1: select DBMS_XMLGEN.getxmltype ('SELECT '||chr(39)||'satyaki'||chr(39)||' cola FROM dual con
  
  RES
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  Elapsed: 00:00:00.03
  satyaki>
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  Enter value for str: satyaki
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  Kind regards.

  LOULOU

  Published by: Satyaki_De on September 27, 2008 14:10

• PL/SQL functions as LOV to use in another display object

  Hello

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  Or better is at - it another way to do this (maybe I'm wrong)

  Thank you.

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  Instead of a programmatic VO of PL/SQL, I found sometimes easier to write PL/SQL functions that return a table - need to CREATE a TYPE for the data items to be returned and a TYPE of TABLE IMBRIQUE tabular form of the first kind.  The function returns the type of table, and can even be a PIPElined table function.  Then I create a VO with the following text:

  SELECT * from TABLE (my_function_returning_table)

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• ORA-06503: PL/SQL: function returned no value ORA-06512:

  Hi all

  SQL > set serveroutput on

  SQL > CREATE OR replace FUNCTION qty_value (p_item_id number)

  2 RETURN NUMBER

  3 EAST

  4 v_qty_arrival NUMBER;

  5 BEGIN

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  7. WHAT (SUM (b.quantity) - SUM (b.quantity_received)) < = 0 THEN 0

  8 ELSE (SUM (b.quantity) - SUM (b.quantity_received))

  9 END Qty_Arrival

  10 INTO v_qty_arrival

  Po_lines_all 11 a,

  po_line_locations_all 12 b

  13 WHERE a.po_line_id = b.po_line_id

  14 AND a.item_id = p_item_id;

  15 EXCEPTION

  16 THEN THAN OTHERS THEN

  17 v_qty_arrival: = NULL;

  18 RETURN v_qty_arrival;

  19 END qty_value;

  20.

  The function is created.

  SQL >

  SQL > select xxc_qty_arrivale (214960) double

  2.

  Select xxc_qty_arrivale (214960) double

  *

  ERROR on line 1:

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  Back AFTER using the exception block is fine as long as your code actually REACHED the exception block.

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  Spot the differences between the following 3 functions. Understand how they work.

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  The second function has a return in the exception block and one in the block of code and runs correctly. Result: no error, because the return is not missing in the code block.

  The third function has a return in the exception block and one in the block of code and is forced into an error. Result: no error, because the return of the exception handler is used (instead of retriggering of the error, which you would normally do).

  SQL > create or replace function myfunc

  2 return number

  3 as

  4 start

  5 dbms_output.put_line ('in the section of code');

  6 null;

  7 exception

  8 then than others

  9. can

  10 dbms_output.put_line (' in the exception handler ' |) SQLERRM);

  11      --

  12 return 0;

  13      --

  14 end;

  15.

  The function is created.

  SQL > select double myfunc;

  Select double myfunc

  *

  ERROR on line 1:

  ORA-06503: PL/SQL: function returned no value

  ORA-06512: at "GHPLUS. MYFUNC", line 14

  In the section of code

  SQL > create or replace function myfunc

  2 return number

  3 as

  4 start

  5 dbms_output.put_line ('in the section of code');

  6 null;

  7    --

  8 return 1;

  9    --

  10 exceptional

  11 so that others

  12. can

  13 dbms_output.put_line (' in the exception handler ' |) SQLERRM);

  14      --

  15 return 0;

  16      --

  end 17;

  18.

  The function is created.

  SQL > select double myfunc;

  MYFUNC

  ----------

  1

  1 selected line.

  In the section of code

  SQL > create or replace function myfunc

  2 return number

  3 as

  n number 4;

  5. start

  6 dbms_output.put_line ('in the section of code');

  7 n: = 1/0; -force an error (zero divisor) to join the exception handler

  8    --

  9 return 1;

  10-

  exception 11

  12 so that others

  13. can

  14 dbms_output.put_line (' in the exception handler ' |) SQLERRM);

  15      --

  16 return 0;

  17      --

  18 end;

  19.

  The function is created.

  SQL > select double myfunc;

  MYFUNC

  ----------

  0

  1 selected line.

  In the section of code

  In the handler for exception ORA-01476: divisor is equal to zero

  SQL >

• PL/SQL function to calculate the non-working days

  Hello

  I have the following pl/sql function which generates a number of days between two selected dates (i.e. excluding weekends). However, I also need to exclude specific holidays - day of Christmas etc. These holiday dates are stored in a table in our database (11 GR 2) called "HOLIDAY".

  How can I integrate the holidays which is held in the table of holidays in the following query to exclude these dates as well? I know how to write a separate funtion pl/sql for a number of days between two dates using SELECT... BUT I can't work out how to bring together them in a single query.

  Could someone show me how with the pl/sql / dates below please?

  Example of HOLIDAY table below.

  Thank you!

  TP

  create or replace
  function WORKING_DAYS (pi_start_date in date, pi_end_date in date) return integer
  
  is
  
  v_start_date date :=pi_start_date;
  v_end_date date:=pi_end_date;
  v_count integer:=0;
  
  begin
  
  while v_start_date <= v_end_date
        loop
                          if to_char(v_start_date,'D') not in ('6','7')                    
                          then
                          v_count := v_count+1;                       
                          end if;
                         
                  v_start_date:=v_start_date+1;
                 
        end loop;
       
  return v_count;
  
  end;
  
  

  (select '10-Apr-2013' as NWD from dual union all
  select '06-May-2013' from dual union all
  select '27-May-2013' from dual union all
  select '26-Aug-2013' from dual union all
  select '26-Dec-2013' from dual union all
  select '25-Dec-2013' from dual union all
  select '01-Jan-2014' from dual union all
  select '18-Apr-2014' from dual union all
  select '21-Apr-2014' from dual union all
  select '05-May-2014' from dual union all
  select '26-May-2014' from dual union all
  select '25-Aug-2014' from dual union all
  select '25-Dec-2014' from dual union all
  select '26-Dec-2014' from dual) HOLIDAYS
  

  Hello

  the link is on MOSC, not OTN... Here's a copy:

  This function calculates the number of days between two dates, ignoring weekends and holidays (if requested and if the holidays are stored in a table)

  I give an example of table 'public_holiday' with sample data, but users must ensure that their table contains the relevant data (all holidays within the maximum range of use of the service)

  CREATE TABLE public_holiday (calendar_day, DATE, text VARCHAR2 (30));

  FUNCTION to CREATE or REPLACE nb_days (p_date_from IN DATE

  p_date_to DATE by DEFAULT TRUNC (sysdate)

  , p_public_holidays in CHAR DEFAULT 'Y '.

  ) RETURN NUMBER

  DEFINE AUTHID

  AS

  /*********************************************************************/

  / * Author: Bruno Vroman * /.

  / * Created: 23-AUG-2012 * /.

  / * Last updated: 23-AUG-2012 * /.

  / * Object: to calculate the number of days between 2 dates, to the exclusion of * /.

  / * Saturday and Sunday, but also "holidays" If the * /.

  / * argument 'p_public_holidays' = 'Y ' * /.

  / * Support: p_date_from<= p_date_to                             ="">

  / * component ' hour min dry "ignored (just counting days) * /.

  /* First step:                                                       */

  / * the calendar days between 2 days * /.

  / Remove 2 days for each "week" and 0 or 1 extra day * /.

  / * function to a condition "complex" mix day of first week * /.

  / * and the number of days when full remaining weeks are removed * /.

  / * (set up once for all, for example if there is 3 days and the * /)

  (/ * first day is a Thursday, there is 1 "Sat/Sun" to subtract) * /.

  / * Second step: If 'p_public_holidays' = 'Y': other * /.

  / * days, do not count holidays.                         */

  / Holiday everyday are defined in a table "public_holiday" * /.

  / * Note: there may be holidays defined on Saturday/Sunday.       */

  /*********************************************************************/

  l_result NUMBER;

  l_from DATE;

  l_to DATE;

  l_case tank (4);

  BEGIN

  l_from: = TRUNC (p_date_from);

  l_to: = TRUNC (p_date_to);

  l_case: = TO_CHAR (l_from, 'Dy', 'NLS_DATE_LANGUAGE = English').

  To_char (MOD (l_to - l_from + 1, 7));

  l_result: = l_to - l_from + 1

  -TRUNC ((l_to-l_from + 1) / 7) * 2

  -CASE

  WHEN l_case IN ('Mon6', 'Tue5', 'Wed4', 'Thu3', 'Fri2'

  , "Sat1", "Sun1", "Sun2', 'Sun3", "Sun4".

  , "Sun5', 'Sun6.

  )

  THEN 1

  WHEN l_case IN ('Tue6', 'Wed5', 'Wed6', 'Thu4', "Thu5"

  , 'Thu6', 'Fri3', 'Fri4', 'Fri5', 'Fri6 '.

  , "Sat2", "Sat3', 'Sat4', 'Sat5", "Sat6.

  )

  THEN 2

  0 OTHERWISE

  END

  ;

  IF SUPERIOR (p_public_holidays) = "Y".

  THEN

  SELECT l_result - COUNT (*)

  IN l_result

  OF public_holiday p

  WHERE p.calendar_day > = l_from

  AND p.calendar_day<=>

  AND SUBSTR (TO_CHAR (p.calendar_day

  , "Dy".

  'NLS_DATE_LANGUAGE = English'

  )

  , 1, 1 ) != 'S'

  ;

  END IF;

  RETURN l_result;

  EXCEPTION

  WHILE OTHERS

  THEN

  DBMS_OUTPUT. Put_line (' CTF nb_days (' |))

  To_char (p_date_from, "MON-DD-YYYY"). ', ' ||

  To_char (p_date_to, "MON-DD-YYYY"). ', ' ||

  p_public_holidays | ' ) : ' || SQLERRM

  );

  LIFT;

  END nb_days;

  /

  REM

  REM example:

  REM A) fill out the 'public_holidays '.

  REM

  TRUNCATE TABLE public_holiday;

  INSERT INTO public_holiday VALUES (DATE ' 2012-01-01', ' new year (a Sunday)');

  INSERT INTO public_holiday VALUES (DATE '' 2012-01-03, "for example");

  REM (insert other days...)

  COMMIT;

  Call the function for some pairs of dates of REM B)

  REM nb1: remove only Sat/Sun

  REM nb2: also remove holidays

  REM

  ALTER SESSION SET nls_date_format ='Dy DD-MON-YY';

  WITH some_dates AS

  (SELECT DATE ' 2011-12-29'd dual FROM

  UNION ALL SELECT DATE ' 2012-01-08' FROM dual

  UNION ALL SELECT DATE ' 2012-01-10' FROM dual

  )

  SELECT d1.d 'FROM '.

  , d2.d ' to THE '.

  , nb_days (d1.d, d2.d, ' don't) nb1

  , nb_days (d1.d, d2.d, 'Y') nb2

  OF some_dates d1

  some_dates d2

  WHERE d1.d<=>

  ORDER BY nb1, nb2, d1.d

  ;

  GO TO NB1 NB2

  ------------- ------------- ---- ----

  Monday, January 8, 12 Monday, January 8, 12 0 0

  Friday, December 29, 11 Friday, December 29, 11 1 1

  Wednesday, January 10, 12 Wednesday, January 10, 12 1 1

  Monday, January 8, 12 Wednesday, January 10, 12 2 2

  Friday, December 29, 11 Monday, January 8, 12 7 6

  Friday, December 29, 11 Wednesday, January 10, 12 9 8

  Hope that this could be useful, but note that this code has not been completely tested, so check and test before you trust it (in the case of any questions, please post a comment)

  Bruno Vroman.

  Best regards

  Bruno

• Pass a list of values to a pl/sql function

  I would like to pass a list of values to a pl/sql function where the list will be used in an IN clause. Ideally, I would like to do the following:
  
  CREATE or REPLACE FUNCTION (dept_list in varchar2)
  Start
  Select... where dept in (dept_list);
  
  use: process_list ('7730,7735,7740,7745');
  
  I can't find an example to do based on pl/sql, but it seems feasible.
  Is there a way to do this?

  user12088323 wrote:

  I would like to pass a list of values to a pl/sql function where the list will be used in an IN clause.

  use: process_list ('7730,7735,7740,7745');

  The first thing is that you need an appropriate data type for storing a list of numbers. A unique value that look you like a list of numbers, is not actually a list of numbers but a single character value.

  This example uses the built in odcinumberlist data type in a procedure, you can do the same in function

  Re: Pass an array to an Oracle stored procedure

  If you have an older version of the database, you may need to create your own type with the same definition of odcinumberlist.

• Help SQL function

  Hi all

  I have a table which includes

  ID, first_name, last name and date of birth

  I want to retrieve all the records that have the same name and DOB

  for example.

  ID, first_name, last name, DOB

  1 xyz abc 01/01/2012

  hij 2 efg 15/05/2012

  3 xyz abc 01/01/2012

  4 xyz abc 01/01/2012
  

  so in the output of 1, 3 and 4 rows will appear only.

  can someone advise please on the appropriate SQL function

  Thanks in advance

  Hello

  One way is to use the analytical COUNT function:

  WITH got_num_rows AS

  (

  SELECT id, first_name, last_name, dob

  , COUNT (*) OVER (PARTITION BY first name

  last_name

  ,             dob

  ) AS num_rows

  FROM table_x

  )

  SELECT id, first_name, last_name, dob

  OF got_num_rows

  WHERE num_rows > 1

  ;

  The subquery is needed here, because the analytical functions are calculated after the WHERE clause has been applied.  To use the results of an anlytic function in a WHERE clause, you must calculate the function in a subquery, then you can use the results where you want (including the WHERE clause) of a Super query.

• XQuery SQL function

  Hello
  
  In a query XQuery is posssible to call a function or procedure SQL (PL / SQL)?
  Here is an example of what I had accomplished:
  
  
  SELECT THE PRD. XMLCOLUMN of
  XMLTABLE (' for $i in ora: view("P_iXXX")/LINE)
  $j in ora: view("P_jXXX")/LINE.
  where
  ($i / NSU_xxx = $j/NSU_xxx)
  return
  (
  < NCL >
  {
  $i / NSU_xxx,
  H3. CALL the SQL function? as sql_xxx
  for $k in ora: view("P_kxxx")/ROW
  ($vk/COD_RMP_VPM = "PRD")
  Return()
  }
  < / NCL >
  () "PATH of XMLType 'XMLCOLUMN' COLUMNS 'resultsqlfunction' INTEGER PATH 'xsql_xxx' INTEGER ACCESS to 'NSU_xxx' path 'NSU_xxx', '.') as the PRD;
  
  Thanks in advance for your answers
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  Who today replaces "ora: see?

  On 11.2, ora expansion feature: view() is deprecated in favor of the fn:collection("oradb:/") method:

  http://docs.Oracle.com/CD/E11882_01/AppDev.112/e23094/xdb_xquery.htm#BABECFFD

  My DBA database have installed Oracle XML DB to use the XMLType and XMLTable, I thought that these features among other things speed up the creation of XML.

  What are the benefits of using XQuery and XMLTable and XMLQUERY functions?

  Which version of the database you use?

  Please read: http://docs.oracle.com/cd/E11882_01/appdev.112/e23094/xdb_xquery.htm#CBAGCBGJ

  Is there another method to expedite the creation of XML?

  Publication of SQL/XML functions are probably the best way to create custom relational data XML documents.

  The basic functionality of XQuery is not to the RDBMS query tables or views, although Oracle provides extensions to do.
  Most of the time, I use XQuery (via XMLTable and XMLQuery) to do exactly the opposite, i.e. to extract XML data in a relational form, or the transformation of XML fragments.

  If your actual requests are slow - even if you need to define what that means and that you are pregnant - then maybe the SQL/XML functions are not the real problem.

  In a "Where clause" as I turn, I have several "outer join". Here is an example.

  where
  PPM. NSU_PPM = w.NSU_PPM and FRNS. NSU_FRN (+) IS FCO. NSU_FRN and FCO. NSU_FCO (+) IS PPM. NSU_FCO
  and T2O. NSQ_T2O (+) IS PPM. NSQ_T2O
  and T51. NSQ_T51 (+) IS PPM. NSQ_T51
  and TWU. NSU_STT (+) IS PPM. NSU_STT
  and T01. NSQ_T01 (+) IS PPM. NSQ_T01
  and vpm.cod_rmp_vpm (+) = "PRA".
  and vpm.num_vsn_vpm (+) = PPM.vsn_sup
  and w.nsu_ppm = A.nsu_ppm (+)
  and W.NSU_SOO = A_HEADER. NSU_SOO and A_HEADER. NOR_SOM = 0

  Yes, it's exactly what I was talking about.
  Transposing the logic for XQuery 1.0 is not the approach more simple (to say the least), because there is no direct support OUTER JOIN.
  XQuery 3.0 provides the functionality, but it is not yet here in the database.

  My suggestion would be to stick to the publication of SQL/XML functions.
  If you have a specific question about the performance, we (as the members of the forum) will be happy to help you.
  Provides the steps necessary to reproduce the problem, including some examples of data.

  Kind regards

  Marc.

• No support for oracle sql functions

  Hi all
  
  Please can someone explain why the B-tree indexes are not capable of supporting SQL queries using the built-in functions of Oracle.
  
  We have indexes of tree b on account_no column.
  
  Select * from test_table where account_no = 11005208
  
  the above query use the index on account_no
  
  Select * from test_table where superior (account_no) = 11005208
  
  But this query does not use the index on the account_no, going for the full table scan.
  
  My question here is account_no is the numeric data type.
  Then, there is no difference between the data in the columns account_no and upper (account_no) column data, so why he does not use index when using sql functions in an sql query?

  Hello

  If you apply the upper function, Oracle implicitly converts its argument to a string, so your query is actually upper (to_char (account_no)).
  There is none HAVE fully functional in the optimizer and you do not expect to know everything and do all the conclusions that a human being can do. Why should Oracle re - write this type of query analysis the data type of the columns and features when it seems more natural programmer write a correct query (without capital letters in this example) or, if necessary, create an index based on a function?

• Problem inserting new line in a VO with SQL functions and subqueries

  Hello
  
  I use JDeveloper 10.1.3.4 and and stuck with insertion of a new line when the values to insert into some fields of the new line are returns of SQL functions and subqueries.
  
  At the sqlplus prompt, the following sql statement is tested and developed successfully:
  

  insert into VALIDATIONS values (
     '111223333', 'JANE', 'DOE',
     SYSDATE,
     (select to_char(sysdate, 'yymmdd') from dual)||
     (select to_char(count(TRANSACTION_DATE)+1,'fm0999') from VALIDATIONS
        where trunc(TRANSACTION_DATE) = to_char(sysdate))
  );

  Note that the values for the fields of 4th and 5th are returns of subqueries and SQL functions.
  
  Ideally, it would be simple to assemble a SQL and executed him as he did to the old way of servlet:
  

  String sql = "insert into VALIDATIONS values ('" + id + "', '" + firstName + "', '" + lastName + "', SYSDATE, (select to_char( ......)))";
  statement.executeUpdate(sql);

  I'm not sure it can be done in JDeveloper, and it was not found in the developer's guide. What I found was rather:
  

  // 1. Find the ServiceRequests view object instance.
  ViewObject svcReqs = am.findViewObject("ServiceRequests");
  // 2. Create a new row and insert it into the row set
  Row newSvcReq = svcReqs.createRow();
  svcReqs.insertRow(newSvcReq);
  // 3. Show effect of entity object defaulting for Status attribute
  System.out.println("Status defaults to: "+newSvcReq.getAttribute("Status"));
  // 4. Set values for some of the required attributes
  newSvcReq.setAttribute("CreatedBy",308); // Nancy Greenberg (user)
  Date now = new Date(new Timestamp(System.currentTimeMillis()));
  newSvcReq.setAttribute("RequestDate",now);
  newSvcReq.setAttribute("ProdId",119); // Ice Maker
  newSvcReq.setAttribute("ProblemDescription","Cubes melt immediately");
  // 5. Commit the transaction
  am.getTransaction().commit();

  In my case, it would be OK for the first three fields as shown below (in the code of transactionsRecords is a display object). But what about the 4th and 5th fields?
  

  Row newTransaction = transactionsRecords.createRow();
  transactionsRecords.insertRow(newTransaction);
  newTransaction.setAttribute("StudentId", id);
  newTransaction.setAttribute("FirstName", firstName);
  newTransaction.setAttribute("LastName", lastName);
  
  newTransaction.setAttribute("TransactionDate", <how to put "SYSDATE" here?>);
  newTransaction.setAttribute("ConfirmNumber", <how to put subqueries here?>);

  A big thank you to those who know or have experience before!
  
  
  Newman

  Newman,
  You can do this via a procedure call. This technique is described here
  I guess you can't do this directly in the EO or VO.
  You can do it the old way to create a prepared directly query and call it as you described. To get the declaration use getDBTransaction () .createPreparedStatement (...) method available in the module of your application.
  Be aware of the implications using the given solution. The framework doesn't know anything of what you are doing. So to see the changes that you used to update the tables that you change.

  Timo

• Customize a page based on the SQL function

  Hello
  
  Please someone help me solve this problem.
  
  In a page I am Image. By clicking on the image, a page will open. The image is created using the code of the controller.
  
  The values are displayed in the second page based on the clicked image.
  
  While the page is being prepared a SQL function must obtain an entry and based on the input TextField should be changed to read-only or not.
  
  Thanks in advance,
  Roselyne

  There is no log file for OFA...

  Set the profile FND: Diagnostics to 'yes '.

  You can see the error on the screen.

  Prasanna-

• Connect the two spreadsheets through a pl/sql function registered

  Hello
  Need help to connect the two worksheets using a stored function.
  
  Step 1:
  Created a function * (test_global) Pl/SQL * in which a table * (TWG) global * is inserted with lines based on criteria (via a call to a pl/sql procedure packed).
  The function returns the number of rows in the global table or 0 if no row is returned.
  The TWG was created using "On Commit preserve rows.
  
  Step 2:
  The function test_global has been saved to the Finder via the "PL/SQL functions to register.
  
  Step 3:
  Create a spreadsheet calculation - & gt; Sheet1 and included a Calculation (calc_global) that calls the test_global function.
  
  Step 4:
  Add another sheet of calculation - & gt; Sheet2 based on a query to select lines in the TWG where calc_global & gt; 0
  
  Step 5:
  Refreshed Sheet1 - & gt; displays the number of rows as * 5119 *.
  Refreshed Sheet2 - & gt; takes some time to run but returns no data
  
  Tried to:
  ) a calc_global link on Sheet1 with the help of sheet 2 links management, this does not work either
  (b) changed using the Pragma autonomous transaction function; gives an error that says no data returned by 1 sheet Sheet2.
  
  Please help with a solution, it seems that there are data in the TWG at the time Sheet1 is running need to display data in the sheet2 worksheet.
  
  Thanks in advance
  SP

  Hello

  You need to call test_global function once on Sheet1 that fit lines within the TWG. In Sheet2, you simply select the TWG and do not have the conditions of anywhere in this form. Try to run Sheet2 without calc_global > 0.

  Rod West

• Filling point with the body of the pl/sql function

  Hello
  
  I want to fill an item "Show as text (saves the State)" in contrast to the other 2 points.
  
  The source of my question is:
  -Only when the current...
  -Body of PL/SQL function
  -Term source:
  DECLARE
  v_diff NUMBER;
  BEGIN
  v_diff: =: P1_AUFWAND_TOTAL -: P1_AUFWAND_BERECHNET;
  Return v_diff;
  END;
  
  Now I get this error:
  
  ORA-06502: PL/SQL: taking oder Wertefehler: Fehler beim zu if indication Zahl von
  Error ERR-1904 unable to calculate the default item: type = body of the function...
  
  I tried to find the problem with the conversion to_number:
  v_diff: = to_number(':P1_AUFWAND_BERECHNET'); or
  v_diff: = to_number (': P1_AUFWAND_BERECHNET', '999G999D00');
  
  What's not here? It's as if I'm making a simple mistake...
  
  Thanks for any help,
  Roger

  If the following code does not work for you, then one of the two elements are not the numbers:

  DECLARE
     v_diff   NUMBER;
  BEGIN
     v_diff := TO_NUMBER (:p1_aufwand_total)
               - TO_NUMBER (:p1_aufwand_berechnet);
     RETURN v_diff;
  EXCEPTION
     WHEN OTHERS
     THEN
        RETURN SQLERRM;
  END;
  

  Denes Kubicek
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