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From Guohui Xiao <>
Subject Using Calcite for query planning
Date Wed, 14 Feb 2018 13:24:50 GMT

We are considering using Calcite to perform cost-based query optimization
in our project.

Specifically, we can already generate some SQL queries expressed in some
relational algebra expression through our API, and we want to optimize the
generated expressions using Calcite.

We have a cost model based on cardinality estimation. We want to use it to
convert e.g., a union of conjunctive queries (UCQ) into a a join of UCQs.

We would like to understand how much efforts are needed to realize our idea
using Calcite.

Do you have suggestions about this?

Thanks in advance.

Best regards,

Guohui & Davide

Guohui Xiao, PhD
Assistant Professor with a fixed-term contract
KRDB - Faculty of Computer Science
Free University of Bozen-Bolzano
Piazza Domenicani, 3
I-39100 Bolzano, Italy

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