GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/6261
[SQL][minor] correct semanticEquals logic
@chenghao-intel, I agree that we probably never knows `semanticEquals` in a
general way, but I think we have done that in `TreeNode`, so we can use similar
logic. Then we can handle something like `Coalesce(children: Seq[Expression])`
correctly.
Also we can just use `Seq[(Expression, NamedExpression)]` instead of
`Map[Expression, NamedExpression]`
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark tmp
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/6261.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #6261
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commit 23491dad955dd079d272690d3ab39822da79c3ef
Author: Wenchen Fan <[email protected]>
Date: 2015-05-19T08:20:19Z
correct semanticEquals
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