How to add a sequence column to an existing table with records
- by user1888543
I had created a new table named USERLOG with two fields from a previous VIEW. The table already consist of about 9000 records. The two fields taken from the VIEW, i.e. weblog_views consist of IP (consists of IP address), and WEB_LINK (consists of URL). This is the code I used,
    CREATE TABLE USERLOG
    AS
    SELECT C_IP, WEB_LINK FROM weblog_views;
I want to add another column to this table called the USER_ID, which would consists of a sequence starting with 1 to 9000 records to create a unique id for each existing rows. I need help with this part. I'm using Oracle SQL Developer: ODMiner version 3.0.04. 
I tried using the AUTO-INCREMENT option,
    ALTER TABLE USERLOG
    ADD USER_ID INT UNSIGNED NOT NULL AUTO_INCREMENT;
But I get an error with this,
    Error report:
    SQL Error: ORA-01735: invalid ALTER TABLE option
    01735. 00000 -  "invalid ALTER TABLE option"
So, I would really appreciate any help that I can get!