MODIFY PARTITION partition
{ { deallocate_unused_clause
  | allocate_extent_clause
  | physical_attributes_clause
  | logging_clause
  | key_compression
  }
    [ deallocate_unused_clause
    | allocate_extent_clause
    | physical_attributes_clause
    | logging_clause
    | key_compression
    ]...
| PARAMETERS ('ODCI_parameters')
| COALESCE
| UPDATE BLOCK REFERENCES
| UNUSABLE
}