GitHub user uzadude opened a pull request:
https://github.com/apache/spark/pull/23042
[SPARK-26070] add rule for implicit type coercion for decimal(x,0)
## What changes were proposed in this pull request?
Adding another excpetion rule for a popular case where ID columns are saved
as decimal(x,0) and are compared with same ID columns in other tables which are
saved as strings
## How was this patch tested?
added a unit tests and made some manual tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/uzadude/spark SPARK-26070-decimal-coercion
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/23042.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 #23042
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commit 5bb97493c5a8d214762f36bbb824d34b6b44a5e2
Author: oraviv <oraviv@...>
Date: 2018-11-15T08:13:07Z
add another exception rule for a wide use case in which ID columns are
saved as decimal(x, 0)
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