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Oracle Table partitioning

Select existing partitions

Check existing partitions on Schema

SELECT * FROM user_tab_partitions;

Drop partition

ALTER TABLE table_name DROP PARTITION partition_name;

Select data from a partition

Select data from a partition

SELECT * FROM orders PARTITION(partition_name);

Split Partition

Splits some partition into two partitions with another high bound.

ALTER TABLE table_name SPLIT PARTITION old_partition
 AT (new_high_bound) INTO (PARTITION new_partition TABLESPACE new_tablespace,
 PARTITION old_partition)

Merge Partitions

Merge two partitions into single one

ALTER TABLE table_name
 MERGE PARTITIONS first_partition, second_partition
 INTO PARTITION splitted_partition TABLESPACE new_tablespace


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