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https://issues.apache.org/jira/browse/CALCITE-1055?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Hyde resolved CALCITE-1055.
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Resolution: Fixed
Fixed in http://git-wip-us.apache.org/repos/asf/calcite/commit/cecef9d3.
> SubQueryRemoveRule should create Correlate, not Join, for correlated
> sub-queries
> --------------------------------------------------------------------------------
>
> Key: CALCITE-1055
> URL: https://issues.apache.org/jira/browse/CALCITE-1055
> Project: Calcite
> Issue Type: Bug
> Reporter: Maryann Xue
> Assignee: Maryann Xue
> Fix For: 1.6.0
>
> Attachments: CALCITE-1055.patch, CALCITE-1055_2.patch
>
>
> In some cases of FILTER correlated subqueries, the "variablesSet" didn't get
> passed down to RelBuilder.join() and thus a Join rel was created while it
> should have been a Correlate rel.
> For example,
> {code}
> select order_id, quantity from orders o
> where quantity = (
> select max(quantity) from orders o2
> where o.item_id = o2.item_id)
> {code}
> Does the same apply to PROJECT and JOIN subqueries, [~julianhyde] ?
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