Updating rows "on cascade"

Hi everybody,
I'd like to know if there's any way to update rows from one table that has a column with an integrity constraint in another table, updating rows from both tables at a time.
For example, if I have two tables, T1 and T2. T1 has column, C1, that is a primary key and T2 has a column, C2, that is a foreign key from T1 (column C1). If the row I'm trying to update is referenced in T2, I have, obviously, the following error:
E.g.: >UPDATE t1 SET c1='new value' WHERE c1='old value';
>"integrity constraint (ASW.T1_FK) violated child record found"
Is there any "cascade" method for updating tables with integrity constraints????
Thank U in advance.

If you use Oracle 8i or 9i, there is a way to do this:
1) Declare your foreign key constraints as "initially deferred",
so they will be checked at commit time. See Ora doc. for details.
2) Write an after-update-trigger on your master table that executes
the update on the dependent table.

Similar Messages

There was an error while updating row count for "SH".."SH".CHANNELS

Hi All,
Am new to OBIEE.Pls help in this regard.
Am building the physical layer as per Repository guide.When am importing the data in to this,am getting the below error.
*"There was an error while updating row count for "SH".."SH".CHANNELS" :"*
channles is the table name and having 5 rows.
but am able to see the data in the sql prompt. like SELECT * FROM SH.CHANNELS then 5 rows data would be displaying..
pls help in this regard and where is the excat problem?
Thanks,

what is the error?
Make sure that your connection pool settings are okay..
Make sure that, you are using correct driver in case of if you are using ODBC dsn..
Also make sure that, your oracle server is running... TNS and Oracle server services

How can i update rows in a table based on a match from a select query

Hello
How can i update rows in a table based on a match from a select query fron two other tables with a update using sqlplus ?
Thanks Glenn
table1
attribute1 varchar2 (10)
attribute2 varchar2 (10)
processed varchar2 (10)
table2
attribute1 varchar2 (10)
table3
attribute2 varchar2 (10)
An example:
set table1.processed = "Y"
where (table1.attribute1 = table2.attribute1)
and (table1.attribute2 = table3.attribute2)

Hi,
Etbin wrote:
Hi, Frank
taking nulls into account, what if some attributes are null ;) then the query should look like
NOT TESTED !
update table1 t1
set processed = 'Y'
where exists(select null
from table2
where lnnvl(attribute1 != t1.attribute1)
and exists(select null
from table3
where lnnvl(attribute2 != t1.attribute2)
and processed != 'Y'Regards
EtbinYes, you could do that. OP specifically requested something else:
wgdoig wrote:
set table1.processed = "Y"
where (table1.attribute1 = table2.attribute1)
and (table1.attribute2 = table3.attribute2)This WHERE clause won't be TRUE if any of the 4 attribute columns are NULL. It's debatable about what should be done when those columns are NULL.
But there is no argument about what needs to be done when processed is NULL.
OP didn't specifically say that the UPDATEshould or shouldn't be done on rows where processed was already 'Y'. You (quite rightly) introduced a condition that would prevent redo from being generated and triggers from firing unnecessarily; I'm just saying that we have to be careful that the same condition doesn't keep the row from being UPDATEd when it is necessary.

Obiee oracle gateway error while updating row count

Hi ,
OBIEE server 11.1.1.5 ,oracle server11g installed in linux 64bit,
while updating row count in Admin tool i am getting the following error
[NQODBC][SQL_STATE:HY000][nQSError:10058] A general error has occured.
[nQSError: 43113]Message returned from OBIS.
[nQSError:43093]An error occured while processing the EXECUTE PHYSICAL statement.
[nQSError:17003]Oracle gateway error: OCIEnvNIsCreate or OCIEnvInit failed to initialize environment.Please check your Oracle Client installation and make sure the correct version of OCI libraries are in the library path.
i am able to check the database from sqlplus it is working fine.
Any suggestion highly appreciated plzzz

Make sure your connection pool is valid and able to import or execute reports.
If everything good as above said, in Physical layer database properties-> general tab choose the database version and try it once.
If not
Check the doc id 1271486.1
Or
To resolve the issue create a softlink (ln -s) in the <OracleBI>/server/Bin folder to link to the 32-bit Oracle Client Driver file.
The example below shows how to perform a softlink from the 64 bit directory:
cd /u10/app/orcladmin/oracle/OracleBI/server/Bin
ln -s $ORACLE_HOME/lib32/libclntsh.so.10.1 libclntsh.so.10.1
If helps mark

Not able to update row count in Physical Layer..connection failed in OBIEE 11g

Hi Guys,
I am not able to do Update Row count in the Physical Layer, i am getting an error The Connection has failed. This is in OBIEE 11g Linux env.
I have put the tnsnames.ora file in the below path:
/*****/pkgs/linux/intel/OBIEE_DIT/MW_HOME/Oracle_BI1/network/admin/
I do not have admin under
/****/pkgs/linux/intel/OBIEE_DIT/MW_HOME/oracle_common/network/
But if i put the whole TNS entry in the Data Source Name i am able to connect:
(DESCRIPTION =(ADDRESS = (PROTOCOL= TCP) (HOST= xxx.xxx.com) (PORT= 1671))(CONNECT_DATA = (SERVICE_NAME = US1OBIEE)))
I am not able to understand the issue..
Thanks,
Amit

Looks like rpd is looking for local tns config... try to use as hostname:port/ServiceName
This should work, just in case not working! stop doing so since it is know issue.
If helps mark

Cursor and Update rows based on value/date

SQL Server 2012
Microsoft SQL Server Management Studio
11.0.3128.0
Microsoft Analysis Services Client Tools
11.0.3128.0
Microsoft Data Access Components (MDAC)
6.1.7601.17514
Microsoft MSXML 3.0 4.0 5.0 6.0
Microsoft Internet Explorer
9.11.9600.16518
Microsoft .NET Framework
4.0.30319.18408
Operating System
6.1.7601
The objective of this is to test the Cursor and use it on a production environment after this is fixed. What I would like to do is update rows in a column i duplicated originally called 'HiredDate' from AdventureWorks2012 HumanResources.Employee table. I
made a duplicate column called 'DateToChange' and would like to change it based on a date I have picked, which returns normally 2 results (i.e. date is '04/07/2003'). The code runs but will not change both dates. It did run however with an error but changed
only 1 of the 2 rows because it said ['nothing available in next fetch'].
The code to add the columns and perform the query to get the results I am running this against:
-- ADD column 'DateToChange'
ALTER TABLE [HumanResources].[Employee] ADD DateToChange Date NOT NULL;
-- Copy 'HireDate' data to 'DateToChange'
UPDATE HumanResources.Employee SET DateToChange = HireDate;
-- Change 'DateToChange' to NOT NULL
ALTER TABLE [HumanResources].[Employee] ALTER COLUMN DateToChange Date NOT NULL;
SELECT BusinessEntityID,HireDate, CONVERT( char(10),[DateToChange],101) AS [Formatted Hire Date]
FROM HumanResources.Employee
WHERE [DateToChange] = '04/07/2003';
Code:
USE AdventureWorks2012;
GO
-- Holds output of the CURSOR
DECLARE @EmployeeID INT
DECLARE @HiredDate DATETIME
DECLARE @HiredModified DATETIME
DECLARE @ChangeDateTo DATETIME
--Declare cursor
-- SCROLL CURSOR ALLOWS "for extra options" to pul multiple records: i.e. PRIOR, ABSOLUTE ##, RELATIVE ##
DECLARE TestCursor CURSOR SCROLL FOR
-- SELECT statement of what records going to be used by CURSOR
-- Assign the query to the cursor.
SELECT /*HumanResources.Employee.BusinessEntityID, HumanResources.Employee.HireDate,*/ CONVERT( char(10),[DateToChange],101) AS [Formatted Hire Date]
FROM HumanResources.Employee
WHERE DateToChange = '01/01/1901'
/*ORDER BY HireDate DESC*/ FOR UPDATE OF [DateToChange];
-- Initiate CURSOR and load records
OPEN TestCursor
-- Get first row from query
FETCH NEXT FROM TestCursor
INTO @HiredModified
-- Logic to tell the Cursor while "@@FETCH_STATUS" 0 the cursor has successfully fetched the next record.
WHILE (@@FETCH_STATUS = 0 AND @@CURSOR_ROWS = -1)
BEGIN
FETCH NEXT FROM TestCursor
IF (@HiredModified = '04/07/2003')/*05/18/2006*/
-- Sets @HiredModifiedDate data to use for the change
SELECT @ChangeDateTo = '01/01/1901'
UPDATE HumanResources.Employee
SET [DateToChange] = @ChangeDateTo --'01/01/1901'
FROM HumanResources.Employee
WHERE CURRENT OF TestCursor;
END
-- CLOSE CURSOR
CLOSE TestCursor;
-- Remove any references held by cursor
DEALLOCATE TestCursor;
GO
This query is run successfully but it does not produce the desired results to change the dates
04/07/2003 to 01/01/1901.
I would like the query to essentially be able to run the initial select statement, and then update and iterate through the returned results while replacing the necessary column in each row.
I am also open to changes or a different design all together.
For this query I need:
1. To narrow the initial set of information
2. Check if the information returned, in particular a date, is before [i.e. this current month minus 12 months or
12 months before current month]
3. Next replace the dates with the needed date
[Haven't written this out yet but it will need to be done]
4. After all this is done I will then need to update a column on each row:
if the 'date' is within 12 months to 12 months from the date checked
NOTE: I am new to TSQL and have only been doing this for a few days, but I will understand or read up on what is explained if given enough information. Thank you in advance for anyone who may be able to help.

The first thing you need to do is forget about cursors. Those are rarely needed. Instead you need to learn the basics of the tsql language and how to work with data in sets. For starters, your looping logic is incorrect. You open
the cursur and immediately fetch the first row. You enter the loop and the first thing in the loop does what? Fetches another row. That means you have "lost" the values from the first row fetched. You also do not test the success of
that fetch but immediately try to use the fetched value. In addition, your cursor includes the condition "DateToChange = '01/01/1901' " - by extension you only select rows where HireDate is Jan 1 1901. So the value fetched into @HiredModified will
never be anything different - it will always be Jan 1 1901. The IF logic inside your loop will always evaluate to FALSE.
But forget all that. In words, tell us what you are trying to do. It seems that you intend to add a new column to a table - one that is not null (ultimately) and is set to a particular value based on some criteria. Since you intend the
column to be not null, it is simpler to just add the column as not null with a default. Because you are adding the column, the assumption is that you need to set the appropriate value for EVERY row in the table so the actual default value can be anything.
Given the bogosity of the 1/1/1901 value, why not use this as your default and then set the column based on the Hiredate afterwards. Simply follow the alter table statement with an update statement. I don't really understand what your logic
or goal is, but perhaps that will come with a better description. In short:
alter table xxx add DateToChange date default '19010101'
update xxx set DateToChange = HireDate where [some unclear condition]
Lastly, you should consider wrapping everything you do in a transaction so that you recover from any errors. In a production system, you should consider making a backup immediately before you do anything - strongly consider and have a good reason not
to do so if that is your choice (and have a recovery plan just in case).

How to find newly updated rows in a table

Hi..
How to know newly updated rows in a table.
Thanks in advance
pal

Or other good thing would be to add LAST_UPDATED column to your table, that can reflect the time the row gets updated.
G

Update Rows with info from other Rows in Same Table.

I'm trying to update rows with information from the same table. The table gets loaded with info from a report that runs and it has to be a new entry every month but I would like to carry over some of the info from last month. This statement below runs but updates all rows in the new table load and in my test cases I only made a few match so only like 5 records should get updated. This is an example of what I'm trying to do. If I add this(C2.COL_INVC_ID = C1.COL_INVC_ID) to the last "*Where*" statement I get an invalid identifier for "C2.COL_INVC_ID". So what am I doing wrong here??? How can I update only the rows that where also in last months run???
Thanks in advance for any help!
Update OpenIssues OI1
Set(OI1.Num, OI1.Status, OI1.Code, OI1.LastModifiedDate) =
(Select OI2.Num, OI2.Status, OI2.Code, OI2.LastModifiedDate
From OpenIssues OI2
Where OI2.num = OI1.num and OI2.TableLoadDate = TO_DATE('01/31/2012 00:00:00', 'MM/DD/YYYY HH24:MI:SS')
Where and OI1.TableLoadDate = TO_DATE('02/29/2012 00:00:00', 'MM/DD/YYYY HH24:MI:SS')
SQLMe

Hi,
Welcome to the forum!
SQLMe wrote:
I'm trying to update rows with information from the same table. The table gets loaded with info from a report that runs and it has to be a new entry every month but I would like to carry over some of the info from last month. This statement below runs but updates all rows in the new table load and in my test cases I only made a few match so only like 5 records should get updated. This is an example of what I'm trying to do. If I add this(C2.COL_INVC_ID = C1.COL_INVC_ID) to the last "*Where*" statement I get an invalid identifier for "C2.COL_INVC_ID". If the aliases c1 and c2 aren't defined anywhere, then you can't use them anywhere.
The WHERE clause of the UPDATE statement can only reference the table being updated, ot1 in this case.
So what am I doing wrong here??? How can I update only the rows that where also in last months run???
Thanks in advance for any help!
Update OpenIssues OI1
Set(OI1.Num, OI1.Status, OI1.Code, OI1.LastModifiedDate) =
(Select OI2.Num, OI2.Status, OI2.Code, OI2.LastModifiedDate
From OpenIssues OI2
Where OI2.num = OI1.num and OI2.TableLoadDate = TO_DATE('01/31/2012 00:00:00', 'MM/DD/YYYY HH24:MI:SS')
Where and OI1.TableLoadDate = TO_DATE('02/29/2012 00:00:00', 'MM/DD/YYYY HH24:MI:SS')
------------There's a syntax error in the last line. Either something got lost when you posted the code, or you just don't want the keyword AND. You certainly don't want AND immediately after WHERE.
In general, if it's not obvious how to do an UPDATE, then UPDATE is the wrong tool: you want MERGE instead.
Whenever you have a problem, please post a little sample data (CREATE TABLE and INSERT statements, relevant columns only) from all tables involved.
Also post the results you want from that data, and an explanation of how you get those results from that data, with specific examples.
Simplify the problem as much as possible. Remove all tables and columns that play no role in this problem.
If you're asking about a DML statement, such as UPDATE, the CREATE TABLE and INSERT statements should re-create the tables as they are before the DML, and the results will be the contents of the changed table(s) when everything is finished.
Always say which version of Oracle you're using.
See the forum FAQ {message:id=9360002}

How to count updated rows after an UPDATE?

Is there a way to count updated rows after an update?
Let's say I have an update like
UPDATE table_a
set field_1 = 'new_field'
WHERE field_2 ='some_value' ;
And now I would like to insert an info record into logging table like
INSERT INTO logging_tbl (step, description, changed_rows) VALUES('UPDATE', 'update of table_a', ?);
update is in sqlplus script.
Thanks.
Message was edited by:
br00klynZ00

Use SQL%ROWCOUNT.
DECLARE
v_num NUMBER := 0;
BEGIN
UPDATE table_a
set field_1 = 'new_field'
WHERE field_2 ='some_value' ;
v_num := SQL%ROWCOUNT;
INSERT INTO logging_tbl (step, description, changed_rows)
VALUES('UPDATE', 'update of table_a', v_num);
END;

Count of updated rows

Hi there,
I would like to be able to count updated rows after submitting a page. I'm aware that #MRU_COUNT# does that in success messages, but I don't know how to (or is it even possible) assign that value to a page item, for instance.
(The number of updated rows isn't all that important, I would just like to know if there was a change made or not).
Any help is much appreciated!
Edited by: 893204 on Oct 25, 2011 2:40 PM

Hi, Chris, thank you for your reply.
I have a report on Employees (Automated Row Fetch).
Editing a row brings up a modal window where I can change employee name, address and so on. I want to be able to know was there any change made to the row when the user clicks Submit.
I hope I made things clearer this time.

How to find latest updating row in a table

Hi
How to find latest updating row in a table

ADF 7 wrote:
SELECT * FROM Table WHERE lastupdTimestamp = (SELECT MAX(lastupdTimestamp) FROM Table)lastupdtimestamp - holds and date an time of an records when it last updation takes place in table.
lastupdtimestamp is a column in my table.And how will this make sense in the scenario I've described, where UserA does an update before UserB, but commits the update after UserB's commited update? And add UserC and UserD and a 1000 more users to this scenario where concurrent updates happen.
What actual time does this lastupdtimestamp contain and represent? And why? How is that lastupdtimestamp used in business logic and processing? Or is it just a silly-bugger-let's-add-somekind-of-time column to that table that essentially meaningless?
Not saying that one should never add such a timestamp based column. Simply that one needs to understand WHAT it contains and it needs to be SENSIBLY used within the data model.
However, in my experience such columns are often slapped on afterwards, never featured in the actual data model designed, and is then used without a second though that the database and its data is a multi-user and multi-process system. And things happen at the same time. And things overlap (serialisation is the exception - not the rule).

Jdev Database Adapter - polling updated rows

Hello, I have a question reguarding the polling strategy available in the database adapter.
I set it up and it works great with new inserted rows in the table.
However, it doesn´t capture the updated rows!
For instance, i have the following table:
ID - NAME - AGE
1 -John- 21
2 -Mary- 25
When I insert a new row, it is captured by comparing the last captured ID in the sequencing file.
ID - NAME - AGE
1 -John- 21
2 -Mary- 25
3 -Cindy- 20 <--------- New row
But when i UPDATE an already existing row, it doesnt load the changed row!
ID - NAME - AGE
1 -John- 26 <----------- Age changed, but polling doesnt recognize it!
2 -Mary- 25
3 -Cindy- 20
Is there a way to get this to work? Should I set an special option? Thank you very much.
Im using jdeveloper 11g.

Hi John, it depends on which type of polling strategy you are using to poll the new/updated records. You must have the necessary previleges to add the special field and creat triggers or your db team must have.
i.Physical delete polling strategy: Cannot capture the UPDATE operations on the table.This because when the adapter listens to the table, when ever a record is polled, that record is deleted after the polling process. After polling the records, if it is not deleted, then the adapter knows that it’s a updated one but here when a record is polled, it is deleted. So when an adapter encounters a record, it’s a new record to the adapter though the record is updated before the polling cycle). So physical delete cannot capture UPDATED records.
ii. Logical delete polling strategy: The logical delete polling strategy updates a special field of the table after processing each row (updates the where clause at runtime to filter out processed rows).The status column must be marked as processed after polling and the read value must be provided while configuring the adapter. Modified where clause and post-read values are handled automatically by the db adapter.
Usage:
<operation name="receive">
<jca:operation
ActivationSpec="oracle.tip.adapter.db.DBActivationSpec"
PollingStrategyName="LogicalDeletePollingStrategy"
MarkReadField="STATUS"
MarkReadValue="PROCESSED"
This polling strategy captures the updated records only if triggers are added.This is because when the record is polled, its status is updated to 'PROCESSED'. To capture this record if its updated, its status has to be 'UNPROCESSED'. So a trigger has to be added to update the status field to 'UNPROCESSED' whenever the record is updated. Below is the example.
Ex:
CREATE OR REPLACE TRIGGER nameOftrigger_modified
BEFORE UPDATE ON table_name
REFERENCING NEW AS modifiedRow
FOR EACH ROW
BEGIN
*:modifiedRow.STATUS :='UNPROCESSED';*
END;
In this example, STATUS is the special field(of the polling table). When the record is updated, the trigger gets fired and updates the STATUS field to 'UNPROCESSED'. So when the table is polled, as this record's status is Unprocessed, this record ll be captured during polling.
Other polling strategeis like "Sequencing Table Last Updated","Sequencing Table Last-Read Id" Polling strategy,etc also can be used to capture the updated records. In these strategies also, you need to add the triggers like the above. These need an extra helping table also to poll.
Logical delete polling strategy is good enough to poll the updated records.
Hope this helps.
Thank you.

Database Adapter - Polling updated rows

Hello, I have a question reguarding the polling strategy available in the database adapter.
I set it up and it works great with new inserted rows in the table.
However, it doesn´t capture the updated rows!
For instance, i have the following table:
ID - NAME - AGE
1 -John- 21
2 -Mary- 25
When I insert a new row, it is captured by comparing the last captured ID in the sequencing file.
ID - NAME - AGE
1 -John- 21
2 -Mary- 25
3 -Cindy- 20 <--------- New row
But when i UPDATE an already existing row, it doesnt load the changed row!
ID - NAME - AGE
1 -John- 26 <----------- Age changed, but polling doesnt recognize it!
2 -Mary- 25
3 -Cindy- 20
Is there a way to get this to work? Should I set an special option? Thank you very much.
Im using jdeveloper 11g.

Hi John,
I guess you're talking about BPEL? If so, try the BPEL forum for a better response.
Best,
John

Query regarding updating rows in JTable

Query regarding updating rows in JTable
Hello,
I have a JTable with 6 columns and 1000s of rows (which are data read from flat files)
I can select 1 or more rows and change the values of the
columns. each time I do this I need to update the values
in the flat file.
Currently I assign the updated Jtable values to a vector
Vector rowVector = (Vector)defaultModel.getDataVector();
then I iterate over the vector and compare the values with the (old) data
in the JTable.
            for(int rowCount = 0; rowCount<rowVector.size(); rowCount++){
                Vector v = (Vector)rowVector.elementAt(rowCount);
                    //smsList is the Vector that contains the old JTable values
                    for(int i=0; i<smsList.size(); i++){
                            //If colums values have been changed; add that
                            //vector value to another vector
                            selectedsmsList.add(smsList.get(i));
            for(int i=0; i<selectedsmsList.size(); i++){
                     //Update the values in the flat file
            }This works fine except that it takes ages to iterate over the updated vecor and un-updated,old vector; is there any way to directly get the list of rows that were updated in the jtable; so that I can directly do an I/O operation to update the jtablke values?

Just a suggestion.
You could add a listener and use a vector of booleans to keep track of the rows that have been changed. You could then iterate through this boolean vector and update the changed rows.
See
http://java.sun.com/docs/books/tutorial/uiswing/components/table.html#modelchange
Don't know whether this will be helpful.
Regards, Darryl

Problem of update rows in data object

Hi everybody,
I got the error message.
Cannot update rows in data object /Samples/Monitor Express/BI_default_Project1_Process1.java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
Please advise!!!!

Are you using alterts related to that data object?
Do you have any open report that uses that data object?

Updating rows "on cascade"

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