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https://issues.apache.org/jira/browse/SPARK-52157?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wenchen Fan reassigned SPARK-52157:
-----------------------------------
Assignee: Mihailo Aleksic
> Use earlier computed name for OuterReference in single-pass resolver
> --------------------------------------------------------------------
>
> Key: SPARK-52157
> URL: https://issues.apache.org/jira/browse/SPARK-52157
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 4.1.0
> Reporter: Mihailo Aleksic
> Assignee: Mihailo Aleksic
> Priority: Major
>
> In the following query we would have min(outer(t2.t2a)) as a name for
> min(t2a) expression.
> {code:java}
> SELECT t1a
> FROM t1
> WHERE t1a IN (SELECT t2a
> FROM t2
> WHERE EXISTS (SELECT min(t2a)
> FROM t3))
> {code}
> This is a problem in compatibility between single-pass resolver and
> fixed-point analyzer because names in single-pass are generated after we
> finish resolution of aggregate expression min(t2a) (bottom-up manner) and at
> that point we have OuterReference wrapped around aggregate expression (name
> looks like outer(min(t2a))).
> In this issue I propose that we store the name earlier (in a form of a tag)
> and use it when needed
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