hello,
This problems keeps making me puzzled.
question1: what is the differences between the two implemenrations of
view-based query rewriting?Advantages and disadvantages
based on view substitution( SubstitutionVisitor、rules:unifyrule）
Rewriting using plan structural information(rules:MaterializedViewRule)
question2: Is there some materialized rewriting example where the first one
not work but the second work? if can list , very thanks
I look forward to hearing from you very much
thanks
rules transformation
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