2010YOUY01 commented on issue #16054:
URL: https://github.com/apache/datafusion/issues/16054#issuecomment-2924301139
> I've had a closer look, we simply wrap `- {foo}` in parentheses regardless
of whether that's strictly necessary. Following the same principle for
`BinaryExpr` won't look as pretty as it could, but it would always be correct.
To avoid adding parentheses when not necessary, we'd have to pass more
information into `SchemaDisplay`. We'd need to be able to access the parent's
precedence to make a decision.
Thank you for the help. `DuckDB` also always add parentheses (e.g.
`(-(1+2))`), I think it's good enough. Trying to only display the necessary
parentheses might not worth the effort.
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