hello,
I'm reading code anout materialized views , up to now，I have accumulated a
lot of problems ,These problems keeps making me puzzled.
question1:
what is the schema for query it‘s related materialized
views（MaterializationService.query(CalciteSchema rootSchema)），I debug test
case，but it is empty。
recently，I have read the paper：Optimizing queries using
materialized views: A practical, scalable solution，It mentioned a filter tree
to find materialized views fastly，is there has
any engineering practice？
question2:
can you give some examples for the applicableMaterializations
and latticeUses(in method registerMaterializations)？and differences Compared to
the first
one(materializationUsers)
I look forward to hearing from you very much
thanks
rules transformation
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