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https://issues.apache.org/jira/browse/CALCITE-1219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15264944#comment-15264944
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Julian Hyde commented on CALCITE-1219:
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If they're not used by core, then they must be part of Calcite's public API. Do
you think the public API should be tested?
> Add a method to SqlOperatorBinding to help determine if an operand is Literal
> or not
> ------------------------------------------------------------------------------------
>
> Key: CALCITE-1219
> URL: https://issues.apache.org/jira/browse/CALCITE-1219
> Project: Calcite
> Issue Type: New Feature
> Components: core
> Reporter: Sean Hsuan-Yi Chu
> Assignee: Julian Hyde
>
> When Drill is doing type inference, a decimal {color:red} literal {color} can
> be treated as double in some cases.
> However, SqlOperatorBinding has not had a method to tell the caller if an
> operand is literal or not. This JIRA proposes adding such a helper method.
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