Hongze Zhang created CALCITE-2847:
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Summary: Optimize global LOOKAHEAD for SQL parsers
Key: CALCITE-2847
URL: https://issues.apache.org/jira/browse/CALCITE-2847
Project: Calcite
Issue Type: Improvement
Components: core
Reporter: Hongze Zhang
Assignee: Julian Hyde
Currently global LOOKAHEAD is set to 2 for the built-in SQL parsers[1], we'd
like to optimize LOOKAHEAD to 1 to enable performance enhancement if possible.
[1]https://github.com/apache/calcite/blob/883666929478aabe07ee5b9e572c43a6f1a703e2/core/pom.xml#L304
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