Question: How do I
drop a partition based on a date?
Answer: The Oracle docs note that
"You can drop interval partitions in an
interval-partitioned table. This operation drops the data
for the interval only and leaves the interval definition in
tact. If data is inserted in the interval just dropped, then
the database again creates an interval partition.
You
can also drop range partitions in an interval-partitioned
table. The rules for dropping a range partition in an
interval-partitioned table follow the rules for dropping a
range partition in a range-partitioned table. If you drop a
range partition in the middle of a set of range partitions,
then the lower boundary for the next range partition shifts
to the lower boundary of the range partition you just
dropped. You cannot drop the highest range partition in the
range-partitioned section of an interval-partitioned table.
The following example drops the September 2007 interval
partition from the sales table. There are only local indexes
so no indexes are invalidated."
ALTER
TABLE
sales
DROP
PARTITION FOR(TO_DATE('01-SEP-2007','dd-MON-yyyy'));
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