Dynamic update of column with values derived by formula on other table.

i have 3 tables; table A,B and C
table A has two columns (id and Quantity), based on the id value, the quantity value is computed using a formula on two rows (one from table B and the other from C).
the formula is different for each id value.
but after every month the quantity value has to be updated (because tables B & C get updated monthly).
example. given id=1, quantity= select round((sum(h.col1)/sum(p.col1), 2) from B p, C h
given id=2, quantity=select round((sum(col1)/sum(col3)), 2) from C
so for every id the quantity is derived by a different formula, but the quantity value has to be recomputed every month.
need help.

1. update table a
quantity = decode (id,1, <formul1>, id,2 , formula 2...)
2. if you wanto schedule this as monthly task
use dbms_job.submit
send the above query to "What" parameter.

Similar Messages

Update a column with value of column of other table

Hi,
I am looking for an update statement for the following scenario
With following 2 tables
TABLE1 (Primary A, B)
TABLE2 (Secondary C , D).
C Column is not unique.
Please provide me an update statement to update TABLE1.B with TABLE2.D where TABLE1. A = TABLE2.C
Please note that TABLE2.C is not unique.
Please let me know whether this satement is correct.
UPDATE TABLE1
SET B = (SELECT DISTINCT D FROM TABLE 2 WHERE A=C )
Thanks
Alla Kishore

UPDATE TABLE1 T1
SET T1.B = (SELECT DISTINCT D FROM TABLE2 T2 WHERE T2.C=T1.A )

Update A Column with value of Column in the next Row

Hi All,
I have a table which is like this
ID NUMBER,
SUB_ID NUMBER,
STARTDATE DATE.
The Value is say for example like this:
ID     SUB_ID     StartDate
1     1     1-JAN-09
1     2     20-FEB-09
1     3     1-MAR-09
2     1     10-JAN-09
2     4     10-APR-09
2     3     1-MAR-09
2     2     2-FEB-09
I have to add a new column END DATE in the table and populate a value which is One Day less than the value of
start Date for next row. I have to order by ID and SubID and so that colum looks like this.
ID     SUB_ID     StartDate          END DATE
1     1     1-JAN-09          19-FEB-09
1     2     20-FEB-09          28-FEB-09
1     3     1-MAR-09          DEFAULT-END DATE
2     1     10-JAN-09          1-FEB-09
2     2     2-FEB-09          8-Mar-09
2     3     9-MAR-09          9-APR-09
2     4     10-APR-09          DEFAULT END DATE
Can this be achieved using a single update query or I have ot write a Procedure ...any help will be appreicaited

or
merge into test
using (select rowid rid
            , id
            , sub_id
            , startdate
            , lead (startdate) over (order by id, sub_id) - 1 ed
       from test) x
on (x.rid = test.rowid)
when matched then
   update set end_date = x.ed
;

UPDATE value in column with value in SAME TABLE

Hi all,
Here's my issue...
I have a table which records all incidents for a person.
The table looks something like this:
tbl_connect(person_Id NUMBer,
OLD_ID VARCHAR2(24),
CASE_NUMBER     VARCHAR2(10),
CASE_TYPE     VARCHAR2(10),
PERSON_ROLE     VARCHAR2(30),
INCIDENT_TYPE     VARCHAR2(40));
The table is populated from a source table with all fields except person_id. Person_id is a sequence number that gets generated if the person comitting the incident is a NEW PERSON to our system. OLD_Id is the unique identifier between the source table and tbl_connect to identify a person.
The problem: If an existing person commits a new incident, a new record will be inserted into tbl_connect without PERSON_ID. Since the person already is in the database the person_id already exists in tbl_connect for that person. I now need to UPDATE person_id column with the person_id that already exists for this person. How can i achieve this.
Ive been trying all sorts of update queries but nothing seems to work. ANy help will be appreciated. Thanks in advance.

Frank,
Thanks for the speedy reply. Here is a sample table.
I know it's a bit confusing. The data that is being dumped into this table is information from a old system. The OLD_ID is in here because it is the relationship between this table and the old table. PERSON_ID is new to this system to identify a person uniquely. That is why i need them both in this table for right now.
So say my tbl_connect got populated with new info from the old table. As you can see, old_id=567A has comitted another incident. Since he already exists in tbl_connect, now i need to update person_id with the value of 1. Does that make sense now????? If old_id did not exist, all i would do is insert a new row and set person_id to the next sequence number.
TBL_CONNECT
PERSON_ID OLD_ID      CASE_NUMBER CASE_TYPE
1     567A     12345          IR
1     567A     15236          MV
     567A     98547          IR<--newly inserted record of same person

How to update a column with default in a tabular form.

We have a tabular form that has a submit button that does a multi row update. We would like to update a column with a defaut like APP_USER = updated user when the row is updated. Is this possible and how?

used lovs and conditions.

Update trigger fails with value too large for column error on timestamp

Hello there,
I've got a problem with several update triggers. I've several triggers monitoring a set of tables.
Upon each update the updated data is compared with the current values in the table columns.
If different values are detected the update timestamp is set with the current_timestamp. That
way we have a timestamp that reflects real changes in relevant data. I attached an example for
that kind of trigger below. The triggers on each monitored table only differ in the columns that
are compared.
CREATE OR REPLACE TRIGGER T_ava01_obj_cont
BEFORE UPDATE on ava01_obj_cont
FOR EACH ROW
DECLARE
v_changed boolean := false;
BEGIN
IF NOT v_changed THEN
    v_changed := (:old.cr_adv_id IS NULL AND :new.cr_adv_id IS NOT NULL) OR
                 (:old.cr_adv_id IS NOT NULL AND :new.cr_adv_id IS NULL)OR
                 (:old.cr_adv_id IS NOT NULL AND :new.cr_adv_id IS NOT NULL AND :old.cr_adv_id != :new.cr_adv_id);
END IF;
IF NOT v_changed THEN
    v_changed := (:old.is_euzins_relevant IS NULL AND :new.is_euzins_relevant IS NOT NULL) OR
                 (:old.is_euzins_relevant IS NOT NULL AND :new.is_euzins_relevant IS NULL)OR
                 (:old.is_euzins_relevant IS NOT NULL AND :new.is_euzins_relevant IS NOT NULL AND :old.is_euzins_relevant != :new.is_euzins_relevant);
END IF;
[.. more values being compared ..]
    IF v_changed THEN
    :new.update_ts := current_timestamp;
END IF;
END T_ava01_obj_cont;Really relevant is the statement
:new.update_ts := current_timestamp;So far so good. The problem is, it works the most of time. Only sometimes it fails with the following error:
SQL state [72000]; error code [12899]; ORA-12899: value too large for column "LGT_CLASS_AVALOQ"."AVA01_OBJ_CONT"."UPDATE_TS"
(actual: 28, maximum: 11)
I can't see how the value systimestamp or current_timestamp (I tried both) should be too large for
a column defined as TIMESTAMP(6). We've got tables where more updates occur then elsewhere.
Thats where the most of the errors pop up. Other tables with fewer updates show errors only
sporadicly or even never. I can't see a kind of error pattern. It's like that every 10.000th update
or less failes.
I was desperate enough to try some language dependend transformation like
IF v_changed THEN
    l_update_date := systimestamp || '';
    select value into l_timestamp_format from nls_database_parameters where parameter = 'NLS_TIMESTAMP_TZ_FORMAT';
    :new.update_ts := to_timestamp_tz(l_update_date, l_timestamp_format);
END IF;to be sure the format is right. It didn't change a thing.
We are using Oracle Version 10.2.0.4.0 Production.
Did anyone encounter that kind of behaviour and solve it? I'm now pretty certain that it has to
be an oracle bug. What is the forum's opinion on that? Would you suggest to file a bug report?
Thanks in advance for your help.
Kind regards
Jan

Could you please edit your post and use formatting and tags. This is pretty much unreadable and the forum boogered up some of your code.
Instructions are here: http://forums.oracle.com/forums/help.jspa

How to update a column with different values but all other row values r sam

Hi,
I have a table like this.
Col1 col2 col3 col4
10 20 30
10 20 30
10 20 30
i need to update col4 with different values coming from other table like this
Col1 col2 col3 col4
10 20 30 xxxx
10 20 30 yyyy
10 20 30 zzzz
how can i update the table. pls let me know how to use the where condition in the update stmt.
thanks,
jay
Edited by: user2558790 on Nov 20, 2009 12:26 PM

what is the logic for this kind of update...????
Greetings,
Sim

UPDATE multiple columns with conditional SET parameters

I have a procedure that updates multiple columns of a table using the procedure's parameter. Is it possible to have one update statement with conditional SET parameter?
CREATE TABLE TEMP
(POL_NUM NUMBER,
OED DATE,
TERM NUMBER,
TRANS_CD CHAR(2));
INSERT INTO TEMP VALUES (1, '1 AUG 2009', 12, 'NB');
INSERT INTO TEMP VALUES (2, '4 AUG 2009', 12, 'XL');
INSERT INTO TEMP VALUES (3, '2 AUG 2009', 12, 'RN');
COMMIT;
CREATE OR REPLACE PROCEDURE TMP_PROC (
pPOL_NUM NUMBER,
pOED IN DATE,
pTERM IN NUMBER,
pTRANS_CD CHAR2)
AS
BEGIN
IF pOED IS NOT NULL THEN
    UPDATE TEMP SET OED = pOED WHERE POL_NUM = pPOL_NUM;
END IF;
IF pTERM IS NOT NULL THEN
    UPDATE TEMP SET TERM = pTERM WHERE POL_NUM = pPOL_NUM;
END IF;
IF pTRAN_CD IS NOT NULL THEN
    UPDATE TEMP SET TRANS_CD = pTRANS_CD WHERE POL_NUM = pPOL_NUM;
END IF;
COMMIT;
EXCEPTION
WHEN OTHERS THEN
     NULL;
END;Is it possible to replace multiple IFs from the code to have only one UPDATE statement with condition that update the column only if the passed parameter is not null? In real scenario I have more than 3 columns and I don't want to write many IF blocks.
Please help Gurus!!
Edited by: Kuul13 on Sep 18, 2009 1:26 PM

Hi,
You certainly don't want to issue separate UPDATE statements for every column; that will be really inefficent.
SQL has several ways to implement IF-THEN-ELSE logic. CASE is the most versatile, but NVL will do everything you need for this job. You can use one of those to set a column to itself (and therefore not really update that column) when appropriate.
For example:
CREATE OR REPLACE PROCEDURE TMP_PROC (
pPOL_NUM   IN       NUMBER,
pOED          IN   DATE,
pTERM          IN   NUMBER,
pTRANS_CD IN       CHAR
AS
BEGIN
     UPDATE temp
     SET     oed      = NVL (poed,       oed)
     ,     term      = NVL (pterm,       term)
     ,     trans_cd = NVL (ptrans_cd, trans_cd)
     WHERE     pol_num      = ppol_num;
COMMIT;     -- Maybe
END    tmp_proc;"EXCEPTION WHEN OTHERS THEN NULL" is almost always a bad idea. If there's an error, don't you want to know about it? Shouldn't you at least log a message in a warnings table or something?
Think careflully about whether or not you want to COMMIT every time you call this procedure.
Just as it's inefficient to issue a separate UPDATE statement for every column, it's also inefficient to issue a separate UPDATE statement for every row. If efficiency is important, it should be possible to UPDATE several rows in a single UPDATE statement, using NVL (or CASE, or COALESCE, or NULLIF, or NVL2, or ...).
This was a very well-written question! Thanks for providing the CREATE TABLE and INSERT statements, and such a clear explanation.

Update multiple columns with single update statement..

HI all,
i am reading the columns value from different table but i want to update it with signle update statement..
such as how to update multiple columns (50 columns) of table with single update statement .. is there any sql statement available i know it how to do with pl/sql..

As I understood, may be this. Here i am updating ename,sal, comm columns all at once.
SQL> select * from emp where empno=7369;
     EMPNO ENAME      JOB              MGR HIREDATE                   SAL       COMM     DEPTNO
      7369 SMITH      CLERK           7902 17/12/1980 12:00:00        800                    20
SQL> UPDATE emp
2     SET ename = lower (ename),
3         sal = sal + 1000,
4         comm = 100
5   WHERE empno = 7369;
1 row updated.
SQL> select * from emp where empno=7369;
     EMPNO ENAME      JOB              MGR HIREDATE                   SAL       COMM     DEPTNO
      7369 smith      CLERK           7902 17/12/1980 12:00:00       1800        100         20
SQL> UPDATE emp
2     SET ename = (SELECT 'ABCD' FROM DUAL),
3         sal = (SELECT 1000 FROM DUAL),
4         comm = (SELECT 100 FROM DUAL)
5   WHERE empno = 7369;
1 row updated.

Update a column with info from columnA, and if not in columnA, then columnB

I have a situation where I have to update a columnC with information stored one of 2 ways. It is stored one way in ColumnA, and another way in columnB. I must check the string if it is in columnA first, and if it is, that value will go in columnC to be updated. If it is not, I must go on to columnB and find it there. It will be in one of the 2 columns but I must use the way it is stored in these columns to store in my columnC to be updated. The data is basically turned around (not reversed letter for letter, though) in the 2 columns and must be stored the way it is found in columnA or columnB. Any ideas?

It's that simple? It will look in both columns this way? Now, I actually mentioned UPDATE when I meant INSERT, so I am doing this in a VALUES clause? Will I just use the phrase 'nvl(A, B);'?

How to Loop through another list and update a column with SharePoint Designer 2013 Workflow

Hi,
I am trying to get my head around the new 2013 Workflow Engine and SharePoint Designer 2013 Workflow Text-Based Designer.
I have two lists.
List A has 2 columns: Title, Completed (Yes/No)
List B has 3 columns: Title, LookupListATitle, Completed (Yes/No)
All the 2013 Workflow components have been installed and configured and I am selecting the 2013 Workflow option in SPD
I am trying to set off a 2013 Workflow when an item in List A is edited to Loop through List B and select items where the LookupListATitle column's value is equal to the Title value of the current item, and set the value of the Completed column for those
items in ListB to "Yes".
I have the Workflow configured like this:
Stage: Stage 1
IF Current Item:Completed equals Yes
Loop: 1
The contents of this loop will run repeatedly while: ListB:LookupListATitle equals Current Item: Title
Update item in ListB.
(The dialog options for the update item action as follows:
List: ListB
Field: Completed, Value: Yes
In the Find the List Item section
Field: LookupListATitle
Value: Current Item: Title)
Transition to stage
Go to End of Workflow
When I update an item in ListA and set its Completed column to Yes, I would expect the Workflow to find all the items in List B where the Lookup column is equal to ListA's Title (there are 2) and update their Completed column to Yes. But it doesn't work.
When I look at the Workflow Status it says the Internal Status is "Canceled" and the information pop up has the following alien language (and may be truncated):
RequestorId: 95f03b62-8956-ac14-c5cf-dc98c89c589c. Details: System.ArgumentException: Invalid JSON primitive: Item001. Parameter name: value at Microsoft.Workflow.Common.Json.JXmlToJsonValueConverter.ConvertStringToJsonNumber(String value) at Microsoft.Workflow.Common.Json.JXmlToJsonValueConverter.ReadPrimitive(String
type, XmlDictionaryReader jsonReader) at Microsoft.Workflow.Common.Json.JXmlToJsonValueConverter.JXMLToJsonValue(XmlDictionaryReader jsonReader) at Microsoft.Workflow.Common.Json.JXmlToJsonValueConverter.JXMLToJsonValue(Stream jsonStream, Byte[] jsonBytes)
at Microsoft.Activities.DynamicValue.ParseJson(String json) at System.Activities.CodeActivity`1.InternalExecute(ActivityInstance instance, ActivityExecutor executor, BookmarkManager bookmarkManager) at System.Activities.Runtime.ActivityExecutor.ExecuteActivityWorkItem.ExecuteBody(ActivityExecutor
executor, BookmarkManager bookmarkManager, Location resultLocation)
Unfortunately I don't have access to the server, logs etc.
I would love to find some tutorials, or any books on SharePoint Designer 2013 in general and Workflows in particular but my searches haven't turned up much so far apart from a pre-release Beginning SharePoint Workflows which is in its very early stages and
not much help yet.
Can anyone give me some guidance on how to set up While Loops to iterate through a related list using SharePoint Designer 2013?
Mark

Hi,
I understand that you wanted to update the items in the other list (Participants) where the Course equals the Current Item.
You need to use “Call HTTP Web Service" action and “Build Dictionary" action to get the Maxid and then loop Participants to update the items.
You can follow the steps as below to achieve what you want:
Create a custom list named Courses, add columns: Title(Single line of text), Course ID(Single line of text), Course Finalised (Yes/No).
Create a custom list named Participants, add columns: Title(Single line of text), Course(Lookup), CourseFinalised (Yes/No).
Create workflow associated to Courses, start the workflow automatically when an item is created or changed.
Add conditions and actions:
The HTTP URL is set to
https://sitename/_api/web/lists/GetByTitle('listname')/items?$orderby=Id%20desc and the HTTP method is set to “GET”. Then the list will be order by Id and desc.
Then if Course Finalised is equal to Yes, the CourseFinalised of the associated items in Participants will be updated to Yes.
More information:
http://sergeluca.wordpress.com/2013/04/09/calling-the-sharepoint-2013-rest-api-from-a-sharepoint-designer-workflow/
Thank you for your understanding.
Best Regards,
Linda Li
Linda Li
TechNet Community Support

How to update old instances with values

Hi,
i am using albpm 5.7 version.
i have a requirement i need to update the oldinstances with updated data.
suppose i have added new external variable to process how it will update the old instances.
plz suggest how to solve this problem.
Regards,
Srinivas.

Hi,
The standard behaviour is that new instances of the process will use the most recent version of the process that has been deployed to the database. This allows you to deploy new versions of the processes without impacting on processes which are already in progress.
When the workflow engine determines what activity to run next in the process, the engine checks what the start date of the process instance was, so that it can check what version of the process was active at that time. If you update the start date for each running process, so that it reflects the date that you saved the most recent version of the flow, then the workflow engine will use the latest version instead of the version that it was running.
This is not supported. I would never suggest that you do this in a production environment - it does not make sense to be making frequent changes to the process in a production environment, since there is no supported mechanism for forcing existing flows to use the new definition. The engine is designed specifically to run the same version of the process for the duration of the process instance - what you want to do is to blow this out of the water completely. If you do change this, then all timing that is recorded against the activities becomes useless, and the other impact on the workflow process us something that you would need to consider incredibly carefully before deciding whether you want to take the risk.
HTH,
Matt
WorkflowFAQ.com - the ONLY independent resource for Oracle Workflow development
Alpha review chapters from my book "Developing With Oracle Workflow" are available via my website http://www.workflowfaq.com
Have you read the blog at http://thoughts.workflowfaq.com ?
WorkflowFAQ support forum: http://forum.workflowfaq.com

LINQ: Update a column with auto increment value

Hi All,
Greetings.
I am very new to C# (though with lot of experience in VC++). Now a days, I am engaged in a C# project where I need to deal with ADO.NET DataTable and related classes. I am stuck up in a scenario as follows:
I have a data table (of DataTable type) pre-populated with many rows (50000+), parsed from a log file. Now I need to add a column that will be holding index number for each records; eg. 1, 2, 3......
I have tried to add the auto-incremented column dynamically, with seed = 0 and increment = 1, but it is not working.
Is there any LINQ query that I can run to update the DataTable at once? Or foreach loop per DataRow is the only option here?
I appreciate any quick suggestion on this.
Thanks in advance.
Sanjoy Jana.

You should add the auto increment column to the DataTable before you pouplate it with the other data:
//1. Create a datatable
DataTable dt = new DataTable();
//2. add the autoincrement column:
DataColumn column = new DataColumn();
column.DataType = System.Type.GetType("System.Int32");
column.AutoIncrement = true;
column.AutoIncrementStep = 1;
column.AutoIncrementSeed = 1;
//3. Fill the dataTable using an SqlDataAdapter or whatever
dt.Columns.Add(new DataColumn("name"));
dt.Rows.Add("1");
dt.Rows.Add("2");
dt.Rows.Add("3");
dt.Rows.Add("4");
Then you don't have to add the "auto incremented" values yourself in some kind of a loop (using for example LINQ or foreach).
If you want to know how to poplulate the DataTable from a database query using an adapter, please refer to the following page:
http://www.dotnetperls.com/sqldataadapter
Hope that helps.
Please remember to mark helpful posts as answer to close your threads and then start a new thread if you have a new question.

Finding Updated Columns with Values in Rows

Hello,
I have a one requierment as below.
if I have Table ITEM with Below records
ParcelID
ItemCode
CurrentLocation
Destination
UpdatingTime
1010
GLS
ABC
XYZ
01-12-14
1015
PHM
SSS
ZZZ
01-12-14
If any of the column value is updated it will replicate to ITEMUPDATE table with old row and new row as well.
Suppose for ParcelID 1010 CurrentLocation Changed from ABC to CDE it will store in ITEMUPDATE table with both records
old and new and if ParcelID 1015 CurrentLocation Changed from SSS to KKK it will also store as below.
Now ITEMUPDATE table will have all records old as well as new rows as below.
ParcelID
ItemCode
CurrentLocation
Destination
UpdatingTime
1010
GLS
ABC
XYZ
01-12-14
1010
GLS
CDE
XYZ
02-12-14
1015
PHM
SSS
ZZZ
01-12-14
1015
PHM
KKK
ZZZ
01-12-14
Like this any column can update not only CurrentLocation.
Now the requirement is I want to know which columns is updated and what is the new value.
Some what results need to look like below.
ParcelID
Old_CurrentLocation
New_CurrentLocation
1010
ABC
CDE
1015
SSS
KKK
Please Anyone Can help me on this .
Thank You,
Avis

Hello Avis,
You need to store date and time in 'UpdatingTime' column in both ITEM and ITEMUPDATE tables.
If you store only date, you will not get desired results as there may be multiple records for a 'ParcelID' in the same date in ITEMUPDATE table. It is difficult to get the latest record from multiple records with same dates for a 'ParcelID' from ITEMUPDATE.
Alternatively you can create a surrogate key , like 'ItemUpdateID', in ITEMUPDATE from which we can get the latest record for a 'ParcelID'. The surrogate key can be a integer identity column so that automatically incremented and updated for each insert
in ITEMUPDATE. Then it is easy to get latest UpdatingTime for a ParcelID from ITEMUPDATE table.
If the table design and data is something as below:
ITEM table
ParcelID   ItemCode   CurrentLocation   Destination   UpdatingTime
1010   GLS                ABC                     XYZ
2014-01-12
1011       MMX               ABD                     XVB
2014-01-12
1015        PHM                SSS                     ZZZ
2014-01-12
ITEMUPDATE table
ItemUpdateID   ParcelID   ItemCode   CurrentLocation   Destination   UpdatingTime
1                         1010         GLS
ABC             XYZ          2014-01-12
2                   1015         PHM            SSS
ZZZ          2014-01-12
3                         1015         PHM
KKK                ZZZ        2014-02-12
4                         1010         GLS
CDE                      XYZ          2014-02-12
5                         1011         MMX
ABD                YYY           2014-01-12
Here 'ItemUpdateID' is identity column.
The SELECT query can be written as below:
SELECT A.ParcelID, A.ItemCode,
B.CurrentLocation 'New_Location',
ISNULL((SELECT CurrentLocation FROM ItemUpdate WHERE ItemUpdateID = (SELECT MAX(D.ItemUpdateID)
FROM ItemUpdate D WHERE D.ItemUpdateID < B.ItemUpdateID AND D.ParcelID = B.ParcelID)), A.CurrentLocation) 'Old_Location'
FROM Item A
LEFT JOIN ItemUpdate B On B.ParcelID = A.ParcelID
AND B.ItemUpdateID = (SELECT MAX(ItemUpdateID) FROM ItemUpdate C WHERE C.ParcelID = B.ParcelID)
The result will be as follows:
ParcelID   ItemCode   New_Location   Old_Location
1010      GLS              CDE   ABC
1011        MMX             ABD      ABD
1015 PHM       KKK       SSS

Filling a column with value from other columns

Hello all!
Suppose i have the following table:
TableA(col_one int, col_two int, result int);I want to insert value to col_one and col_two, and result will be filled with the multiplication product of col_one and col_two.
ok firstly i know this is very redundant way of storing data and generally should not be used, but one case when this might come in handy is when we want to store a total payment amount of product price and quantity. this can be useful since product price can change overtime and we need to record the data as the transaction happens to avoid change in total payment over time (as the price drops or rises).
now with the problem:
I tried this in mysql and it works:
INSERT INTO TableA (col_one, col_two, result) VALUES (30, 20, col_one * col_two);but not in oracle, which output the following error:
>
ora 00984 column not allowed here
any idea on how to do it in oracle?
thank you very much :)
ps, thank you for the fast replies on my previous topic.

If the insert is done inside PL/SQL you can return the primary key for the row (assuming the table has a primary key?!?) and then update based on that key, but this still introduces two statements where a single statement can suffice.
Why are you thinking so complicated? ;-)
If it is done in PL/SQL the you can do this:
create procedure addRow(p_value1 number,p_value2 number) is
p_result number;
begin
p_result:=p_value1*p_value2;
insert into table1 (col_one,col_two,result) values(p_value1,p_value2,p_result);
commit;
end;If you want to do this automatically when someone inserts a row (without providing the result) you have to use an insert trigger.
Dim

Dynamic update of column with values derived by formula on other table.

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