xiong duan created CALCITE-7348:
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Summary: Remove redundant extraction correlation variables when
Trim Project Fields
Key: CALCITE-7348
URL: https://issues.apache.org/jira/browse/CALCITE-7348
Project: Calcite
Issue Type: Bug
Reporter: xiong duan
In RelFieldTrimmer：
{code:java}
trimFields( Project project, ImmutableBitSet fieldsUsed, Set<RelDataTypeField>
extraFields){code}
The Project RelNode already has the corresponding correlation variables, so
there is no need to extract them again from the Project.
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