Can we safely assuming that the rules match nodes which are closer to root would execute earlier than those rules matches nodes which are closer to tableScan?

[张静]

Hi, guys.
Can we safely assuming that the rules match nodes which are closer to root
would execute earlier than those rules  matches nodes which are closer to
tableScan?
For the following nodes tree, can we assume the rules matches aggregate are
always execute earlier than the rules matches filter?
Aggregate
|_Project
             |_Filter
                       |_TableScan