创建分区概述

{ range_partitions
| list_partitions
| hash_partitions
| composite_range_partitions
| composite_list_partitions
| composite_hash_partitions
| reference_partitioning
| system_partitioning
| consistent_hash_partitions
| consistent_hash_with_subpartitions
| partitionset_clauses
}

reference_partitioning:
PARTITION BY REFERENCE ( constraint ) 
  [ (reference_partition_desc...) ]

system_partitioning:
PARTITION BY SYSTEM [ PARTITIONS integer
                    | reference_partition_desc
                       [, reference_partition_desc ...]
                    ]

consistent_hash_partitions:
PARTITION BY CONSISTENT HASH (column [, column ]...)
  [ PARTITIONS AUTO ] TABLESPACE SET tablespace_set

consistent_hash_with_subpartitions:
PARTITION BY CONSISTENT HASH (column [, column ]...)
  { subpartition_by_range
  | subpartition_by_list
  | subpartition_by_hash
  }
  [ PARTITIONS AUTO ]

partitionset_clauses:
{ range_partitionset_clause | list_partitionset_clause }