Solved

what is identity equivalent key word in oracle

Posted on 2008-10-20
3
1,677 Views
Last Modified: 2013-12-18
I have .sql scripts generated from sybase for creating table structure and trying to run on oracle  client toad after changing the datatypes from datetime to date etc.Toad is not recognizing identity (auto increment number column ).It is giving error when i create table saying right parenthesis missing as in the screenshot.
identity.jpg
0
Comment
Question by:gudii9
3 Comments
 
LVL 8

Assisted Solution

by:Wikkard
Wikkard earned 150 total points
ID: 22763595
I don't think oracle has the same notion of identity (autonumber) columns as SQL server or sybase.  

It uses sequences which you need to create as a seperate (sequence) database object and then create a trigger on insert for the table which needs the identity column to update the id.

This article explains it http://www.orafaq.com/faq/how_does_one_implement_autonumber_and_identity_columns_in_oracle
0
 
LVL 4

Accepted Solution

by:
hqassap earned 350 total points
ID: 22764894
Hi,
In oracle things get weird:

CREATE TABLE comparison_axis (ca_id NUMBER,      -- Remove the (identity) word
ca_vers CHAR(1) NOT NULL,
...
...
...
insert_userid VARCHAR(25),
CONSTRAINT pk_comparison_axis PRIMARY KEY (ca_id)    -- Remove the two hyphens (this is the replacement of the identity
)

-- Then create a sequence to auto generate the identifiers:

CREATE SEQUENCE seq_ca_id
     MINVALUE 1
     MAXVALUE 999999999999999999
     START WITH 1
     INCREMENT BY 1
     NOCACHE;
      
-- And Finally create a triggere before insert on the record level to force the sequencing:

CREATE OR REPLACE TRIGGER trg_ca_insert
   BEFORE INSERT
   ON comparison_axis
   FOR EACH ROW
BEGIN
   IF :NEW.ca_id IS NULL
   THEN
      SELECT seq_ca_id.NEXTVAL
        INTO :NEW.ca_id
        FROM DUAL;
   END IF;
END;
/
0
 
LVL 7

Author Closing Comment

by:gudii9
ID: 31508104
thaank you very much
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Java Timer (static) 9 36
javap bin 2 26
execute immediate plsql block 5 33
arguments to jar 5 13
Cursors in Oracle: A cursor is used to process individual rows returned by database system for a query. In oracle every SQL statement executed by the oracle server has a private area. This area contains information about the SQL statement and the…
Configuring and using Oracle Database Gateway for ODBC Introduction First, a brief summary of what a Database Gateway is.  A Gateway is a set of driver agents and configurations that allow an Oracle database to communicate with other platforms…
This theoretical tutorial explains exceptions, reasons for exceptions, different categories of exception and exception hierarchy.
This tutorial explains how to use the VisualVM tool for the Java platform application. This video goes into detail on the Threads, Sampler, and Profiler tabs.

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

22 Experts available now in Live!

Get 1:1 Help Now