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Posted to github@arrow.apache.org by "asimsedhain (via GitHub)" <gi...@apache.org> on 2023/12/30 21:56:21 UTC

Re: [I] Add `NULL` in list simplifications [arrow-datafusion]

asimsedhain commented on issue #8688:
URL: https://github.com/apache/arrow-datafusion/issues/8688#issuecomment-1872613935

   I would like to take a look at this.
   
   If my understanding is correct, the first case i.e. `SELECT .. WHERE NULL IN (…)` would simplify to  `SELECT .. WHERE False`.
   
   As for the second case, `SELECT .. WHERE x IN (NULL, …)` would be simplified to `SELECT .. WHERE x IN (…)` as it could still return rows for the other exprs in the list. 


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