jonahgao opened a new pull request, #6830: URL: https://github.com/apache/arrow-datafusion/pull/6830
# Which issue does this PR close? Related to #6345 # Rationale for this change Quoted from the [PostgreSQL documentation](https://www.postgresql.org/docs/current/functions-comparison.html): > Notice that IS UNKNOWN and IS NOT UNKNOWN are effectively the same as IS NULL and IS NOT NULL, respectively, except that the input expression must be of Boolean type. So they can apply the same simplification rules. # What changes are included in this PR? Simplify `IsUnkown` and `IsNotUnkown` expression # Are these changes tested? Yes # Are there any user-facing changes? No -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
