nseekhao opened a new issue, #6544:
URL: https://github.com/apache/arrow-datafusion/issues/6544
### Is your feature request related to a problem or challenge?
If you run a roundtrip test on
```sql
SELECT d1.b, d2.c FROM data d1 JOIN data d2 ON CAST(d1.b AS int) = d2.e
```
you'll got the error `Error: Internal("invalid join condition expression")`.
This is due to the lack of support of expressions not in the form
`AND(f0(...), ..., fk(...))`, where `fi()` is `EQ()` in the consumer
([ref](https://github.com/apache/arrow-datafusion/blob/main/datafusion/substrait/src/logical_plan/consumer.rs#LL367C5-L367C5)).
### Describe the solution you'd like
Support for more arbitrary join condition expressions.
### Describe alternatives you've considered
This effort can be incremental. I just wanted to make sure this gets brought
up and tracked.
### Additional context
_No response_
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