Regarding auto increment

how can i auto increment the number in my table while inserting the data

Good point. If any error occurs during insertion -
the sequence will be broken. Bucause, even if your
transaction failed sequence will generate the new
sequence number. But, as a result of that error -
insertion won't be taken into place. Thus, break your
continous chain.It is probably good point (depending on requirements) irregardless of that.
Sequences ARE NOT for CONTINUOUS number generation.
Sequences ARE for UNIQUE number generation.
Continous chain will break also at least rollback (always) and DB restart as well (unless you haven't specified sequence as nocache which generally is silly idea).
Gints Plivna
http://www.gplivna.eu

Similar Messages

Error & Missing explanation in docs regarding Auto Increment / Identity

Hi Data Modeler-Team, Hi fellow readers,
could you please explain the meaning of option
"Column Properties" - "General" - "Identity" (next to "Auto Increment"), as I don't see a logical difference between those two.
Also, the meaning of these fields is left out in the docs under
http://docs.oracle.com/cd/E18464_01/doc.30/e15802.pdf "3.8 Column Properties" - "General" (page 75)
Thanks,
Blama
(WinXP, Version 3.0.0.665)
Edited by: bl**** on 30.12.2011 15:40

Hi Philip, Hi David,
thank you for your answers.
I saw now that "identity" is removed for one column if I assign "identity" to another column and that I can have many auto-increments within one table.
But what does "identity" mean exactly? I don't see a difference in the displayed relational model and also don't see a difference in the created DDL.
Isn't "identity" from the meaning the same as a Primary Key?
Thanks,
Blama

How to use auto-increment and search option for MS Access DB

Dear All,
I have configured our invoice in Adobe Livecycle and connected it to MS Acess 2007 as per http://forms.stefcameron.com/2006/09/18/connecting-a-form-to-a-database/.
All is working fine, I can insert, retrieve data from DB to invoice and vice versa.
Now I want few things to be implemented on our invoice.
When ever I open our invoice, it populate the first entry from DB, Is it possible to populate the last entry ?
Auto increment invoice number from MS Access DB every time we open our invoice after save.
How to implement search option from DB for invoice number ?
Please let me know if someone can provide me help on my scenario, so that I can share more stuff related to invoice and DB.
Look forward to hearing soon from experts and other team members.
Thanks & Regards
Riyad...

As far as I know there is not any auto increment data type in Oracle. Instead of this you should create a sequence and get the next value of the sequence while creating a row in your table.
CREATE SEQUENCE Test_Sequence ;
CREATE TABLE Test_Table ( Id NUMBER , Foo VARCHAR2(4) ) ;
ALTER TABLE Test_Table ADD CONSTRAINT Test_Table_PK_Id PRIMARY KEY ( Id ) ;
INSERT INTO Test_Table ( Id , Information ) VALUES ( Test_Sequence.NEXTVAL , 'FOO' ) ;

Auto increment with collection is not working

I am using KODO 3.0 with MYSQL 4.0.16. I have created two JDO object as
follows
BankAccount contains a collection of Contacts object. My metadata looks
like this
<class name="BankAccount">
<field name="contacts">
<collection element-type="Contacts"/>
<extension vendor-name="kodo" key="element-dependent"
value="true"/>
</field>
</class>
<class name="Contacts" objectid-class="Contacts$contactId">
<field name="contactId" primary-key="true">
<extension vendor-name="kodo" key="jdbc-auto-increment"
value="true"/>
</field>
</class>
There is no problem in the persisting of BankAccount object and adding
Contacts to it, but Contacts collation is not retrieved along with parent
object. In the database join table, the contact Id value it is always set
to null.
Things are working well with out contact id in Contacts.
Can anyone help?
Regards,
dharmi

Set the following property:
kodo.jdbc.AutoIncrementConstraints: true
Described here:
http://www.solarmetric.com/Software/Documentation/latest/docs/ref_guide_pc_oid.html#ref_guide_pc_oid_pkgen_autoinc

Auto Increment of Primary Field in Table Maintainance

Hi,
We want to give an Auto increment to the Primary Key, when ever the table is updated/inserted with a new record. How to get the value updated????
For Eg,
Table ZTEST Contains     MANDT, ITEM,   EBELN.
It should have the values 800    001   000977
And when the next record is created, the ITEM value should be Automatically get the value 002.. and so on for every Record.
Pls do let me know if any other details is reqd.
Thanx in Advance.
Ajaz

Dear Syed,
   You can do many things in table maintenance screen like validation of some field, making some field required or displayed etc.
   For auto increment you have to use Number-Ranges. FM NUMBER_GET_NEXT is helpful in this case.
   Where to write the code??? The Function-Group you have made. There will be includes. You can easily locate the place to write these codes.
   Caution point is that if you re-generate the table maintenance then all code will be gone.
Regards,
Deva.

How to update a auto increment record

Hi all,
I just figured out a way to insert auto increment record, but there is still one problem to solve which is how to do the update of the auto increment record, because after I get the db record, I don't know if there is a way to get the associated sequence key with the record, I can't do the record update without knowing the primary key, ie the associated sequence key.
Can you point me to a way to do updating?
Regards,
-Bruce

You learn how to use JDBC.
And then you learn how to use the SQL update statement.
If you search in this forum for 'update' you will find examples.

EJB 2.0 & auto-increment

How to implement EJB 2.0 Entity bean for auto increment DB filed, let's say I have table person(ID, name), ID is auto-increment PK, I have ejbCreate(ID, name), if I send null for ID that won't work (exception), if I have ejbCreate(name) that won't work because I receive exception from App. server regarding PK.
DB is mySQL, app. server is WebLogic 6.1

I think you just need to provide an id in ejbCreate. Usually this should never be manipulated by DBAs or application level code.
In ejbCreate(), call setId().
Of course, you'll need a way to generate guids.
The following may help in this respect...
private static final SecureRandom seeder = new SecureRandom();
public static final String generateGUID(Object obj) {
     StringBuffer buf = new StringBuffer(16);
     if (hexServerIP == null) {
          InetAddress localInetAddress = null;
          try {
               localInetAddress = InetAddress.getLocalHost();
          } catch (UnknownHostException e) {
               log.fatal("exception.guid.local.inet.address.unknown", e);
               return null;
          byte serverIP[] = localInetAddress.getAddress();
          hexServerIP = hexFormat(getInteger(serverIP), 8);
     String hashcode = hexFormat(System.identityHashCode(obj), 8);
     buf.append(hexServerIP);
     buf.append(hashcode);
     long timeNow = System.currentTimeMillis();
     int timeLow = (int)timeNow & 0xFFFFFFFF;
     int node = seeder.nextInt();
     StringBuffer guid = new StringBuffer(32);
     guid.append(hexFormat(timeLow, 8));
     guid.append(buf.toString());
     guid.append(hexFormat(node, 8));
     return guid.toString();
private static int getInteger(byte bytes[]) {
     int i = 0;
     int j = 24;
     for (int k = 0; j >= 0; k++) {
          int l = bytes[k] & 0xff;
          i += l << j;
          j -= 8;
     return i;
private static String hexFormat(int i, int j) {
     String s = Integer.toHexString(i);
     return padHex(s, j) + s;
private static String padHex(String s, int i) {
     StringBuffer buf = new StringBuffer();
     if (s.length() < i) {
          for (int j = 0; j < i - s.length(); j++) {
               buf.append('0');
     return buf.toString();
}hth
/k1

Auto Increment of primary key value in jdeveloper.

hi all,
i have one table with one primary key.
i want to increment that primary key when ever i go for CreateInsert or create operation in JSF page.
i have tried with db sequence value type, but i was not able to achieve my condition. in DB Sequence i got error like cannot convert java.class.string to java.class.dbsequence.
can any one suggest me in this to achieve my condition.
regards,
M vijayalakshmi.

hi all,
from this i found the simple method to achive the auto increment of primary key.
http://www.techartifact.com/blogs/2012/10/adding-number-for-primary-key-in-oracle-adf-using-groovy-by-sequence.html#ixzz2EeU9CWo6
in this am facing an one small issue.
intial value of the primary key is 1.
for this value i have entered the row of data.
again i have clicked on the create button.
then the value of the primary key has increased to 2.
for this value i didnt entered the row of data to databse.
just i closed the browser.
if i run the run page again, the value of primary key is 3.
my requirment is i shd get the value of primary key is "2".
the increment shd happen the maxi value present in the primary key of the table.
can any one help me in this how to achive this.
thanks in advance.
regards,
M vijayalakshmi.

Auto Increment in hibernate

Hello every one,
i have to write the code that used for diffrent databases like oracle,sql-server2000..
the problem has generated at the auto increment field...
the problem is as follows....
1) Identity field in sql-server but not in oracle because for oracle it uses index
i try like
<id name="id" column="id">
<generator class="increment"/>
</id>
it works fine for oracle but not for sql-server and ....
<id name="id" column="id">
<generator class="identity"/>
</id>
it works fine for sql-server but not for oracle because the id field is not null and it gives error that null field is not allowed ....
is there any other solution....then please help me
thanks
pandev84

hello frnd,
thanx for reply..
but how can i map these files in config file...
pls help..
thanx and regards,
Pandev84If you can't be bothered to spell out these words, and historically you also can't be bothered to answer questions or read documentation (hint: the answer to your question can be found here http://hibernate.org) why should people help you?

Auto Increment column in database table

Hello experts, I am using oracle 11g database at windows 7.I have to create a sequence object and a table with an auto increment ID column.For this I have created a trigger before insert to select next sequence from a sequence object. It works well but Now I have the current sequence is 7 and there are 6 records inserted in table. Now I delete two records.Thus I have only 5 records in table but my current sequence is still 7.So if I put it in id column then a new record will be inserted in table with 7 ID number after 5th ID number.I want this record should be inserted with 6 Id number. For this I tried to not use sequence object.I tried a pl/sql trigger before insert, which will count the all records in table and after increment i put it in ID column to insertion....Is this a professional way..? thank You regards aaditya

979801 wrote:
Hello experts, I am using oracle 11g database at windows 7.I have to create a sequence object and a table with an auto increment ID column.For this I have created a trigger before insert to select next sequence from a sequence object. It works well but Now I have the current sequence is 7 and there are 6 records inserted in table. Now I delete two records.Thus I have only 5 records in table but my current sequence is still 7.So if I put it in id column then a new record will be inserted in table with 7 ID number after 5th ID number.I want this record should be inserted with 6 Id number. For this I tried to not use sequence object.I tried a pl/sql trigger before insert, which will count the all records in table and after increment i put it in ID column to insertion....Is this a professional way..? thank You regards aaditya
Sequences only guarantee unique numbers. You cannot (and should not) attempt to create gapless sesquences. That's not how oracle works and will not scale to a multi user application.
Imagine two people try to insert records at the same time (and have yet to commit), the trigger you create will count the number of records and determine there are 5 records, so assign the next number of 6, for both people who are inserting records. The first person to commit will get their data saved, and assuming you have a unique constriaint on that id, the second person will raise a duplicate key on insert or suchlike error.
Gapless sequential numbers are not appropriate to multi-user environments. Such requirements are often given by managers or business people who do not understand the technology.
Think of it in terms of a real world office, but with people using a paper system instead of a computer. The only way you can try to guarantee people get the next number and also re-use numbers that have been deleted is to have a single place where each person in the office goes to, to fetch the next number, and they have to queue up behind each other to get the next one off the list. But if someone has removed an old record, they've got to wait in the same queue to go and put that number back in the pot for someone else to use. It just doesn't work, even in a manual system. Yes, people can guarantee that they're only getting unique numbers that nobody else is using, but they cannot guarantee that they are reusing and filling gaps etc. It's an unrealistic expectation.

Auto-increment workflow reset

I have Sharepoint 2013, but created a Workflow in Sharepoint designer with Sharepont 2010 Workflow to assign an auto-increment column to a list. I have tested the list and the auto-incrementing is working great, however now I want to actively use the list
in the 'real' working capacity, but when I've deleted the previously entered test items the auto-increment column proceeds to increase. How can I restart/reset the number back to where it should start? Is it possible? Or do I need to delete my list and start
all over again from scratch both list and workflow?

Hi Tam,
How did you set the workflow to assign an auto-increment column to a list?
If the workflow is different, then there should be different solutions.
If you are using another list to store the numbers for the auto-increment column, then you can modify the columns in that list to be the value that you want to start with.
Here is a link about using another list to recalculate the next number with workflow:
http://gihanmaduranga.blogspot.jp/2012/09/create-auto-increment-number-column-in.html
If that is case of your workflow, then you can edit the Last Number column in the Counter list to be a number which you want to start with.
If you are using a different solution, could you please provide the detail steps of how you set the auto-increment column?
Best regards.
Thanks
Victoria Xia
TechNet Community Support

Auto increment variable in foreach loop in ssis

i know this has been asked N number of times, but still i have a question for you guys
i have files sitting in FTP location
i am loading the data from the files into tables (no issues)
but i need to assign value to a particular column as -99999999 and then auto increment that number while loading the files into the database
I cannot have auto increment for the that particular column
should i use a derived column, script component, execute sql task?
can somebody point me to the right direction
if it were a single file, assigning the auto incremental number is easy, but with for each loop, i am not able to get the solution
Thanks

Hi Jack,
To achieve your goal, you can use a Row Count Transformation in the Data Flow Task to get row count for each file, and then use an Execute SQL Task after the Data Flow Task to update the total row count variable. Supposing the variable used in the Row Count
Transformation is InsertCount, the variable used to store the total row count is TotalInsertCount. We need to set the ResultSet of the Execute SQL Task to “Single row”, and the SQLStatement to:
DECLARE @Insert_Count INT, @Total_Insert_Count INT
SET @Insert_Count=?
SET @Total_Insert_Count=?
SET @Total_Insert_Count=@Total_Insert_Count + @Insert_Count
SELECT R_Total_Insert_Count=@Total_Insert_Count
Then, set the Parameter Mapping of the Execute SQL Task, we map variable InsertCount and TotalInsertCount to the parameters in the SQL statement respectively. In the ResultSet page of the Execute SQL Task, map the resultset to variable TotalInsertCount.
Please refer to the following screenshot:
Regards,
Mike Yin
TechNet Community Support

JSP - Auto increment Oracle

Hello,
I've created some JSP pages with JDeveloper. When I want to create a new record in a table, then have I to fill in an unique ID for this record. Is it possible to get this field automatically filled in with an unique ID ? With Oracle, it's not possible to have an auto increment field. The solution I know, is to use a sequence and a trigger. But I doesn't want to use a trigger. Is there an other possibility ?
Greetz, Joris

It works! I've created a trigger to call the sequence to the primary key field and now it's populating that column properly.
Just one more doubt about it: I've imported some data from my old Access 2003 database to the new XE database, but when I insert a new record in the table, my sequence doesn't retrieve the last value from the primary key column + 1, it's recording straight from position 1 forward. The sequence created automatically during db migration is this one:
CREATE SEQUENCE "LOG_ID_LOG_SEQ" MINVALUE 1 MAXVALUE 999999999999999999999999 INCREMENT BY 1 START WITH 1 CACHE 20 NOORDER NOCYCLE
The problem with this sequence is that it doesn't see that I've migrated some data to this table before using it, so it's starting with value 1. How can I alter this sequence so it will always get the last (highest) value from my PK column + 1 before interting a new record to the table?
Thanks again!
Regards,
Roger.

Auto increment number in BO

Hello All,
In my CAF code, I need to persist one variable and increment in every time the AS is called. To elaborate further, I have a business object (entity service) which stores the customer records. The customer number has to be auto incremented. The response of this service is the customer number which is auto generated.
Please let me know how to go about it simplistically. Do we have the concept of static variables, the same of instance of which can be accessed by various service calls?
Thanking you all in anticipation.
Regards,
Keerti

Hi Keerthi,
You can use the concept of static.
If i had understood correctly, you need to have an operation in Application Service(AS) to create a Customer BO and each time a customer BO is formed it shopuld be given a customer ny=umber in an auto increment fashion.
For this you can have the following code in your create method of the AS
try {
               StatObj ob = this.getstatObjService().create();
               i++;
               ob.setCustNumber(i);
               this.getstatObjService().update(ob);
          } catch (CAFCreateException e) {
          } catch (CAFUpdateException cue) {
          } catch (CAFPessimisticLockException cple) {
          } catch (CAFOptimisticLockException cole) {
StatObj is my BO and CustNumber is an int in the BO.
Hope it solves your problem.
Hi keerthi,
Is the problem solved.
Regards,
Srinivasan Subbiah
Edited by: Srinivasan Subbiah on Apr 28, 2008 8:55 AM

Prefixing and auto-increment field

Hello
I have a web application (php/mySQL) that has an auto-increment primary key field called job_id.
Could anyone help me add a prefix to this?
I want to add the year and month (YYMM/) in front of the field (e.g. 0811/1234 then 0811/1235 assuming current month and year is Nov 2008).
Maybe Im wrong about adding the prefix to the primary key. Should I maybe add an additional field to maintain this?
Any advice greatly appreciated...
Regards
Paul

Hi Paul,
MySQL table and column names may only consist of letters, underscores and numbers anyway, so the date format you´d like to use would lead to errors due to the forward slashes.
Maybe Im wrong about adding the prefix to the primary key.
I don´t know what you want to achieve with this approach, but I´d really leave the name of the Primary Key column "as is" and use a different column for storing data which contains such date values.
Cheers,
Günter Schenk
Adobe Community Expert, Dreamweaver

Regarding auto increment

Similar Messages

Maybe you are looking for