GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/15929
[SPARK-18053][SQL] compare unsafe and safe complex-type values correctly
## What changes were proposed in this pull request?
In Spark SQL, some expression may output safe format values, e.g.
`CreateArray`, `CreateStruct`, `Cast`, etc. When we compare 2 values, we should
be able to compare safe and unsafe formats.
The `GreaterThan`, `LessThan`, etc. in Spark SQL already handles it, but
the `EqualTo` doesn't. This PR fixes it.
## How was this patch tested?
new unit test and regression test
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark type-aware
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15929.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 #15929
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commit 00c432a23336d20634f2caf957a4df1c0c23f78e
Author: Wenchen Fan <wenc...@databricks.com>
Date: 2016-11-18T07:51:44Z
compare unsafe and safe complex-type values correctly
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