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Posted to user@spark.apache.org by Christopher Piggott <cp...@gmail.com> on 2018/05/04 14:10:40 UTC

Free Column Reference with $

How does $"something" actually work (from a scala perspective) as a free
column reference?

Re: Free Column Reference with $

Posted by Vadim Semenov <va...@datadoghq.com>.

https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/SQLImplicits.scala#L38-L47

It's called String Interpolation
See "Advanced Usage" here
https://docs.scala-lang.org/overviews/core/string-interpolation.html

On Fri, May 4, 2018 at 10:10 AM, Christopher Piggott <cp...@gmail.com>
wrote:

> How does $"something" actually work (from a scala perspective) as a free
> column reference?
>
>


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