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https://issues.apache.org/jira/browse/SPARK-14785?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15259941#comment-15259941
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Roy Cecil edited comment on SPARK-14785 at 4/27/16 10:29 AM:
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Q32 falls in this category as well.
TPC query rewrite rules do not allow the proposed rewrites. So our hands are
tied. If this feature is supported along with SPARK-14781 we would achieve 100%
TPC-DS capability and would be a great press for spark!!
was (Author: roycecil):
Q32 falls in this category.
TPC query rewrite rules do not allow the proposed rewrites. So our hands are
tied. If this feature is supported along with SPARK-14781 we would achieve 100%
TPC-DS capability and would be a great press for spark!!
> Support correlated scalar subquery
> ----------------------------------
>
> Key: SPARK-14785
> URL: https://issues.apache.org/jira/browse/SPARK-14785
> Project: Spark
> Issue Type: New Feature
> Reporter: Davies Liu
>
> For example:
> {code}
> SELECT a from t where b > (select avg(c) from t2 where t.id = t2.id)
> {code}
> it could be rewritten as
> {code}
> SELECT a FROM t JOIN (SELECT id, AVG(c) FROM t2 GROUP by id) t3 ON t3.id =
> t.id
> {code}
> TPCDS Q92, Q81, Q6 required this
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