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https://issues.apache.org/jira/browse/CALCITE-7681?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CALCITE-7681:
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Labels: pull-request-available (was: )
> SqlDatetimeSubtractionOperator drops parentheses around compound interval
> expressions
> -------------------------------------------------------------------------------------
>
> Key: CALCITE-7681
> URL: https://issues.apache.org/jira/browse/CALCITE-7681
> Project: Calcite
> Issue Type: Bug
> Reporter: Matthew Bayer
> Priority: Major
> Labels: pull-request-available
>
> [{{SqlDialect.unparseSqlDatetimeArithmetic}}|https://github.com/apache/calcite/blob/701da98408d95ecdc8e80af9be2dc805e6c23242/core/src/main/java/org/apache/calcite/sql/SqlDialect.java#L496-L508]
> does not apply the datetime operator’s precedence when unparsing its right
> operand.
>
> – Input
> CURRENT_DATE - (INTERVAL '3' YEAR + INTERVAL '3' YEAR)
>
> – Incorrect RelToSql output
> CURRENT_DATE - INTERVAL '3' YEAR + INTERVAL '3' YEAR
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