On 2020-Nov-06, Сергей _ wrote: > https://docs.oracle.com/database/121/VLDBG/GUID-00923EB3-05F6-41F7-8437-E42FC9BD9571.htm#VLDBG1093 > > There is a widespread model when data related to properties of a superclass > is stored in a base table, and data related to subclasses in a detail table. Or > when the main entity has volatile additional parameters. A very simplified > example in the attached image. Sounds easier to achieve by using a JSONB column that holds all the contract details. > The most successful choice of partitioning table *Contracts* is sectioning > by list with key column *ContractTypeID*. It would be nice if the table > *ContractDetails* is partitioned automatically like the parent table > *Contracts*. Then we don't have to add a crutch column *ContractTypeID* to > the table* Contract**Details* and partition manually in sync with > *Contracts*. This field also consumes disk space, since the table of details > is usually large and there can be more than one partitioning key. Hmm, so you want to partition a table based on values appearing in another table. I wouldn't hold my breath waiting for this.