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Question
User Generated OID
How can I define an user genarated OID?
For example in IBM's DB2 I have an type to be referenced as (for example VARCHAR) and then by using the sentece REF IS OID USER GENERATED when I define an table of the type, I can refer to an object whith the value of the OID which is VARCHAR.
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by: schwertnerPosted on 2006-07-20 at 00:58:20ID: 17144352
Purpose
SYS_GUID generates and returns a globally unique identifier (RAW value) made up of
16 bytes. On most platforms, the generated identifier consists of a host identifier, a
process or thread identifier of the process or thread invoking the function, and a
nonrepeating value (sequence of bytes) for that process or thread.
Examples
The following example adds a column to the sample table hr.locations, inserts
unique identifiers into each row, and returns the 32-character hexadecimal
representation of the 16-byte RAW value of the global unique identifier:
ALTER TABLE locations ADD (uid_col RAW(32));
UPDATE locations SET uid_col = SYS_GUID();
SELECT location_id, uid_col FROM locations;
LOCATION_ID UID_COL
----------- --------------------------
1000 7CD5B7769DF75CEFE034080020
1100 7CD5B7769DF85CEFE034080020
1200 7CD5B7769DF95CEFE034080020
1300 7CD5B7769DFA5CEFE034080020
. . .