GitHub user HyukjinKwon reopened a pull request:
https://github.com/apache/spark/pull/15432
[SPARK-17854][SQL] rand/randn allows null as input seed
## What changes were proposed in this pull request?
This PR proposes `rand`/`randn` accept `null` as input. In this case, it
Github user HyukjinKwon closed the pull request at:
https://github.com/apache/spark/pull/15432
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GitHub user HyukjinKwon opened a pull request:
https://github.com/apache/spark/pull/15432
[SPARK-17854][SQL] rand/randn allows null as input seed
## What changes were proposed in this pull request?
This PR proposes `rand`/`randn` accept `null` as input. In this case, it
