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From cloud-fan <>
Subject [GitHub] spark pull request: [SPARK-12720] [SQL] SQL Generation Support for...
Date Thu, 03 Mar 2016 04:37:40 GMT
Github user cloud-fan commented on the pull request:
    overall LGTM, but we can leverage more information to make the code simpler. For example,
`Aggregate.groupingExpressions` are guaranteed to be `Attribute`s, each projection list in
`expand.projections` are compose by `original output` + `group by attributes` + `gid`, etc.

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