gianm opened a new pull request, #14978:
URL: https://github.com/apache/druid/pull/14978

   Druid has previously refused to execute joins with non-equality-based 
conditions. This was well-intentioned: the idea was to push people to write 
their queries in a different, hopefully more performant way.
   
   But as we're moving towards fuller SQL support, it makes more sense to allow 
these conditions to go through with the best plan we can come up with: a cross 
join followed by a filter. In some cases this will allow the query to run, and 
people will be happy with that. In other cases, it will run into resource 
limits during execution. But we should at least give the query a chance.
   
   This patch also updates the documentation to explain how people can tell 
whether their queries are being planned this way.


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