I see that the feature of Query Cache has been completed
I tried it, and it supports the result cache of the entire statement, but does not support the result cache of subquery?
I would like to ask if it（cache subquery）is not supported, or it is my usage problem.

• the SQL statement select a from (SubQueryA setting use_query_cache = 1), if the result of SubQueryA can be cached, then the execution performance of the statement select b from (SubQueryA) can also be improved?

If it is not supported, please tell me when it will be supported in the future？

• the featue in changelog：