On 20/8/2025 07:38, Chao Li wrote:
I know some memory must be retained until the entire query finishes. But those per-node memories, such as hash table, might be destroyed immediately after a node finishes.I'm not sure I understand your reasoning clearly. How do you know that the current subtree will not be rescanned with the same parameter set? Building a hash table repeatedly may be pretty costly, no?
-- regards, Andrei Lepikhov
