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https://issues.apache.org/jira/browse/CALCITE-2279?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Hyde updated CALCITE-2279:
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Fix Version/s: (was: 1.18.0)
> Druid adapter duplicate binary expression
> -----------------------------------------
>
> Key: CALCITE-2279
> URL: https://issues.apache.org/jira/browse/CALCITE-2279
> Project: Calcite
> Issue Type: Bug
> Components: druid
> Reporter: Kevin Risden
> Assignee: Nishant Bangarwa
> Priority: Major
> Labels: pull-request-available
>
> I was looking into Error Prone [1] checking for Calcite and it found what
> looks like a bug in Druid Adapter. The output is as follows
>
> {quote}DruidJsonFilter.java:[324,9] [IdentityBinaryExpression] A binary
> expression where both operands are the same is usually incorrect; the value
> of this expression is equivalent to `lhs.getType().getFamily() ==
> SqlTypeFamily.NUMERIC`.
> [ERROR] (see
> [http://errorprone.info/bugpattern/IdentityBinaryExpression]){quote}
>
> The DruidJsonFilter [2] has left and right hand the exact same.
>
> [1] [http://errorprone.info/]
> [2]
> [https://github.com/apache/calcite/blob/master/druid/src/main/java/org/apache/calcite/adapter/druid/DruidJsonFilter.java#L323]
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