Returns the partition ID (as an integer) of
the partition of the current record in a specified buffer.
Syntax
BUFFER-PARTITION-ID ( buffer-name )
|
-
buffer-name
- An identifier that specifies the name of a record buffer.
If
the buffer is not populated with a record, this function returns
the Unknown value (?). If there is a record in the buffer
but it is not for a partitioned table, this function returns zero (0).
Notes
- If
you use this function in a WHERE clause, it will be evaluated for
each iteration on the client side after the record has been retrieved.
It will not participate in any index bracketing, so unless there
are other partition-column criteria in the same WHERE clause, it
will be very inefficient.
- The partition ID is only unique within a given table.
