Github user viirya commented on the issue:
https://github.com/apache/spark/pull/16998
@sameeragarwal That's correct.
> By the way, as an aside we should probably allow constraint
inference/propagation to be turned off via a conf flag to provide a quick work
around against these kind of problems.
As we use constraints in optimization, if we turn off constraint
inference/propagation, wouldn't it miss optimization chance for query plans?
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