GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/10781
[SPARK-12783][SQL] fix cast in filter
In SPARK-10743 we wrap cast with `UnresolvedAlias` to give `Cast` a better
alias if possible. However, for cases like `filter`, the `UnresolvedAlias`
can't be resolved and actually we don't need a better alias for this case.
This PR move the cast wrapping logic to `Column.named` so that we will only do
it when we need a alias name.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark bug
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/10781.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 #10781
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commit da348bff013ff1f613b6ec2245e9207a49936441
Author: Wenchen Fan <[email protected]>
Date: 2016-01-16T00:56:39Z
fix cast in filter
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