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Cheng Lian commented on SPARK-13418:
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Summary of offline discussion with [~rxin]:
Moving {{.sql}} to {{LogicalPlan}} can be subtle. For example, {{Subquery.sql}}
needs to match against {{MetastoreRelation}} for SQL generation, but
{{MetastoreRelation}} is in the {{hive}} package. On the other hand, we are
planning to merge {{SQLContext}} and {{HiveContext}}. These problems will be
gone after the merge. So let's leave it as is for now.
> SQL generation for uncorrelated scalar subqueries
> -------------------------------------------------
>
> Key: SPARK-13418
> URL: https://issues.apache.org/jira/browse/SPARK-13418
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Reporter: Reynold Xin
>
> This is pretty difficult right now because SQLBuilder is in the hive package,
> whereas the sql function for ScalarSubquery is defined in catalyst package.
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