Jinfeng Ni created CALCITE-978:
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Summary: Make ReduceExpressionsRule extensible to transform false
filter in schema-on-read case
Key: CALCITE-978
URL: https://issues.apache.org/jira/browse/CALCITE-978
Project: Calcite
Issue Type: Bug
Reporter: Jinfeng Ni
Assignee: Julian Hyde
This comes from a commit in Drill's forked Calcite
(https://github.com/dremio/calcite/commit/a29f007f4f4017368b6f41bf8c3aba4490a1cee8).
ReduceExpressionRule will transform a false filter into VALUES with empty
input. This only works in the case of schema-aware scenario. In schema-on-read
scenario like Drill, VALUES would not provide the schema type at the planning
time; schema has to be propagate during execution time.
We should allow ReduceExpressionRule extensible so that different behavior
would be allowed to handle false filter in both schema-aware case and
schema-on-read case.
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