[GitHub] [druid] gianm commented on pull request #11068: Enable rewriting certain inner joins as filters.

[GitBox <gi...@apache.org>]

gianm commented on pull request #11068:
URL: https://github.com/apache/druid/pull/11068#issuecomment-814264336


   > Looks good. Out of curiosity, given that we exclude null values, how are null values in the left table matched?
   
   I was thinking that because it's an inner join, null values from the left table are supposed to be dropped anyway. (That's why I didn't allow this optimization to trigger for left joins.)


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