Add substrait query frontend #2075
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This commit adds a new query language plugin that allows for specifying "frontend" languages. We rewrote the Sigma rule parser as an example plugin to demonstrate the use.
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@mavam do you plan to proceed this work sometime in the future, or can we close this as it's unlikely to be picked up again? |
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We can close it until we pick it up again. This was a 24h hackathon experiment. We got a good understanding how DuckDB integrates with Substrait and learned about DuckDB's internal query plan representation. We also got hands-on experience with Substrait and were able to extract WHERE expressions. So a success overall. Before going deeper, we have to do some homework in VAST so that we can equip query engines with the needed partitions relevant to a query, as well as sqlizing VASTQL. |
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This PR adds support for a new query language frontend using substrait, a cross-language protobuf-spec for query plans. The idea of this query language plugin is that users can easily connect any query language that compiles into substrait, and VAST takes the query plan as binary substrait blob.
This code originated from our bi-monthly hackathon and was heavily inspired by the awesome work from the @duckdb folks over at duckdb/duckdb#3034. It's highly experimental in nature.
Moving forward, we may consider pushing substrait deeper into VAST and adopting it as only internal representation for a query plan, similar to what Arrow aims at with Compute IR.
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