How add new field as primary key for existing table

Hi,
There is table with name REVIEWER_REUSE_EFFORT and the table has 8000 rows in it.
Now the enhacement i must do on this table is there is no primary key on this table. so i must create a ID also add values to this table of ID
Table structure is like this
Create table REVIEWER_REUSE_EFFORT
PRO_ID number,
POBJ_ID number,
TASK_ID number,
POTENTIAL_EFFORT number,
COMMENTS varchar2(1200),
CREATED_BY varchar2(100),
CREATION_DATE sysdate
UPDATED_BY varchar2(1200),
UPDATED_DATE sysdate
Please suggest me how to add values in that 8000 rows
Thanks
Sudhir

Hi,
If you want to add a new column and update the new column with sequence of number
alter table REVIEWER_REUSE_EFFORT add (ID number);
update REVIEWER_REUSE_EFFORT set ID=rownum;Regards,
Prazy
Edited by: Prazy on Jun 21, 2010 3:13 PM

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http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14251/adfns_indexing.htm#sthref594
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[http://help.sap.com/saphelp_nw04/helpdata/en/cf/21ea0b446011d189700000e8322d00/frameset.htm|http://help.sap.com/saphelp_nw04/helpdata/en/cf/21ea0b446011d189700000e8322d00/frameset.htm]
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