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https://issues.apache.org/jira/browse/CALCITE-2977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16812066#comment-16812066
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pengzhiwei commented on CALCITE-2977:
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Thank [~julianhyde] for take you time, Please have a review again.
> Exception is not thrown out when there are ambiguous field in select list
> --------------------------------------------------------------------------
>
> Key: CALCITE-2977
> URL: https://issues.apache.org/jira/browse/CALCITE-2977
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.20.0
> Reporter: pengzhiwei
> Assignee: pengzhiwei
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.20.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> In the following sql:
> {code:java}
> select t0 from (select 1 as t0, 2 as t0 from dept){code}
> _SqlValidatorImpl_ does not throw an exception for the ambiguous field "t0".
>
>
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