alamb commented on issue #1160:
URL:
https://github.com/apache/arrow-datafusion/issues/1160#issuecomment-1989147640
> Given the age of these discussions, I am wondering if any of the context
or recommended approaches may have changed. @alamb any new thoughts on this?
I think algorithms for such order dependent simplifications look something
like:
```
do {
expr = simplify(expr)
} until expr is unchanged OR some fixed number of iterations is reached
```
Perhaps we can use the API that @peter-toth added in
https://github.com/apache/arrow-datafusion/pull/8891 to check if/when the expr
is unchanged.
The rewrite API for a long time did not have a way to know when the
expression was actually rewritten (and thus when to terminate the iteration). I
think we have it now
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