Ted Xu created CALCITE-2694:
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Summary: Improve type conversion with respect to charset and
collation
Key: CALCITE-2694
URL: https://issues.apache.org/jira/browse/CALCITE-2694
Project: Calcite
Issue Type: Sub-task
Reporter: Ted Xu
Assignee: Julian Hyde
Type conversion need to improved both in correctness and efficiency w.r.t.
charset and collation. The changes include:
# RexSimplify
# RexDataTypeFactory#leastRestrictive
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