morningman commented on pull request #4006:
URL: https://github.com/apache/incubator-doris/pull/4006#issuecomment-653043560


   In fact, we are also trying to implement a batch delete function that can 
support the deletion of a large number of specified keys (including specifying 
multiple values in inPredicate)
   
   In your current implementation, if there are too many values in InPredicate 
(for example, tens of thousands), then each column must be looped through tens 
of thousands of conditions during query, which may be inefficient.
   
   Maybe you can discuss it with @yangzhg about it.


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