GitHub user wangyum opened a pull request:
https://github.com/apache/spark/pull/18019
[SPARK-20748][SQL] Add built-in SQL function CH[A]R.
## What changes were proposed in this pull request?
Add built-in SQL function `CH[A]R`:
For `CHR(bigint|double n)`, returns the ASCII character having the binary
equivalent to `n`. If n is larger than 256 the result is equivalent to CHR(n %
256)
## How was this patch tested?
unit tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/wangyum/spark SPARK-20748
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18019.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 #18019
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