UPDATE value in column with value in SAME TABLE
Hi all,
Here's my issue...
I have a table which records all incidents for a person.
The table looks something like this:
tbl_connect(person_Id NUMBer,
OLD_ID VARCHAR2(24),
CASE_NUMBER VARCHAR2(10),
CASE_TYPE VARCHAR2(10),
PERSON_ROLE VARCHAR2(30),
INCIDENT_TYPE VARCHAR2(40));
The table is populated from a source table with all fields except person_id. Person_id is a sequence number that gets generated if the person comitting the incident is a NEW PERSON to our system. OLD_Id is the unique identifier between the source table and tbl_connect to identify a person.
The problem: If an existing person commits a new incident, a new record will be inserted into tbl_connect without PERSON_ID. Since the person already is in the database the person_id already exists in tbl_connect for that person. I now need to UPDATE person_id column with the person_id that already exists for this person. How can i achieve this.
Ive been trying all sorts of update queries but nothing seems to work. ANy help will be appreciated. Thanks in advance.