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https://issues.apache.org/jira/browse/CALCITE-2847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16790182#comment-16790182
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Hongze Zhang commented on CALCITE-2847:
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Thank you very much [~krisden] and [~julianhyde], working on repairing the PR
now.
> 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: Hongze Zhang
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.19.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> 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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