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https://issues.apache.org/jira/browse/CALCITE-2441?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16654348#comment-16654348
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Julian Hyde commented on CALCITE-2441:
--------------------------------------

Even if it does, I'm not sure we should make RelBuilder depend on everything. 
Too much coupling.

> Relational algebra doesn't work with SQL views
> ----------------------------------------------
>
>                 Key: CALCITE-2441
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2441
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>            Reporter: Andrei Sereda
>            Assignee: Julian Hyde
>            Priority: Major
>
> Query execution fails when one tries to use 
> [RelBuilder|https://calcite.apache.org/docs/algebra.html] on the top of SQL 
> view:
> {quote}
> Caused by: java.lang.UnsupportedOperationException
>  at org.apache.calcite.plan.RelOptUtil$4.expandView(RelOptUtil.java:2805)
>  at org.apache.calcite.schema.impl.ViewTable.expandView(ViewTable.java:124)
>  ... 36 more
> {quote}



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