Update rows

I have two table instillation and feed
having following columns
instillation
telno
inst_type
feed
telno
inst_type
Feed table having duplicate data and installation having unique data of telno and inst_type
I have to update instillation.inst_type with feed.inst_type for telno.
If the instillation.inst_type is same as feed.inst_type then keep It same or do not update
if not same then update any of the feed.inst_type.(I used rownum = 1)
Can anyone help me to write this in a single update statement.(because I have 50 lakhs rows)
Thanks in advance
Santosh

Hello
Hopefully the following will help. It doesn't assign any sort of priority to the inst_type in feed to update in instillation other than the sort order i.e. if you have 2 different inst_types in feed for the same tel_no, only one will be chosen and this is determined by which comes first in the sub query....Hopefully I haven't over complicated this update, there may well be a better way to do it.
SQL> select * from tst_inst
2 /
TEL_NO                         INST_TYPE
123                            A
345                            B
678                            C
910                            D
111                            E
SQL> select * from tst_feed
2 /
TEL_NO                         INST_TYPE
123                            A
345                            NEW1
345                            NEW2
678                            C
910                            NEW1
910                            NEW2
111                            E
7 rows selected.
SQL> UPDATE
2     tst_inst inst
3 SET
4     inst.inst_type = (      SELECT
5                                     inst_type
6                             FROM
7                                     (
8                                     SELECT
9                                             inst_type,
10                                             tel_no,
11                                             row_number() OVER(PARTITION BY tel_no ORDER BY inst_type) rn
12                                     FROM
13                                             tst_feed
14                                     ) f
15                             WHERE
16                                     f.rn = 1
17                             AND
18                                     f.tel_no = inst.tel_no
19                             AND
20                                     f.inst_type <> inst.inst_type
21                             )
22 WHERE
23     EXISTS( SELECT
24                     NULL
25             FROM
26                     tst_feed f
27             WHERE
28                     f.tel_no = inst.tel_no
29             AND
30                     f.inst_type <> inst.inst_type
31             );
2 rows updated.
SQL> select * from tst_inst;
TEL_NO                         INST_TYPE
123                            A
345                            NEW1
678                            C
910                            NEW1
111                            EHTH
David

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

Hi All,
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Hello
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table1
attribute1 varchar2 (10)
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Etbin wrote:
Hi, Frank
taking nulls into account, what if some attributes are null ;) then the query should look like
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wgdoig wrote:
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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
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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];
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-- 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
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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???
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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!
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------------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?

ExecuteBatch(): number of successfully updated rows

Hello everybody:
Here is a simple but often a repeated question in java forums:
Requirement:
1.To read a flat file that has many rows of data.
2.Parse the data and update the database accordingly.
3.Find the number of successfully updated rows.
Approach:
After reading the file and parsing its data,
- use PreparedStatement
- use executeBatch()
I found this as unadvisable to use executeBatch() as its implementation is
inherently driver specific. The executeBatch() returns an array of update counts.
Now,can any one tell me, what is the best way to trace the number of successfully
(and unsuccessfully) updated rows by using this count?
Is there any other way to achieve the same by not using executeBatch()?
Can any one share a snippet of code to achieve this specific functionality?
[Need is to log the number of unsuccessful attempts along with their
corresponding rows of data].
Thanks & regards,
Venkat Kosigi

executeBatch submits a batch of commands to the database for execution and if all commands execute successfully, returns an array of update counts. The int elements of the array that is returned are ordered to correspond to the commands in the batch, which are ordered according to the order in which they were added to the batch. The elements in the array returned by the method executeBatch may be one of the following:
-- A number greater than or equal to zero indicates that the command was processed successfully and is an update count giving the number of rows in the database that were affected by the command's execution
-- A value of -2 indicates that the command was processed successfully but that the number of rows affected is unknown
If one of the commands in a batch update fails to execute properly, this method throws a BatchUpdateException, and a JDBC driver may or may not continue to process the remaining commands in the batch. However, the driver's behavior must be consistent with a particular DBMS, either always continuing to process commands or never continuing to process commands.
If the driver continues processing after a failure, the array returned by the method BatchUpdateException.getUpdateCounts will contain as many elements as there are commands in the batch, and at least one of the elements will be the following:
-- A value of -3 indicates that the command failed to execute successfully and occurs only if a driver continues to process commands after a command fails.
return values have been modified in the Java 2 SDK, Standard Edition, version 1.3 to accommodate the option of continuing to proccess commands in a batch update after a BatchUpdateException obejct has been thrown.
Throws BatchUpdateException (a subclass of SQLException) if one of the commands sent to the database fails to execute properly or attempts to return a result set. The BatchUpdateException getUpdateCounts() method allows you to known the element who caused the fail identified by a -3 value.
-- So, if you have a succesfully result, look for at the executeBatch returned array ( #values >= 0 ) + ( #values == -2 ) = successes
and if you have not a succesfully result, catching the BatchUpdateException take the array returned by the getUpdateCounts() method, and look for the position in which array values are -3. You could take the data at this position on batch and log it.
-- Other way to insert a bulk copy on database is to use a bcp command ( it�s not java, bcp is an independent command ) that allows you to do bulk inserts from file, indicate an error file, bcp will give to you as result a file with those lines not where inserted.
I hope have help you.;)

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