cloud-fan commented on pull request #31612:
URL: https://github.com/apache/spark/pull/31612#issuecomment-783840517
It's internal so I think we can update the DSL API to the best shape we
want. However, it does raise some issues after I looking into the test
failures:
```
where(col === "abc")
select("abc".as(...))
"abc" like ...
```
Previously they all create expressions with string literal, and breaking
them seems a much bigger impact than I thought. I tend to agree that we should
create a new syntax for creating attributes from strings.
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