andygrove opened a new issue, #2496:
URL: https://github.com/apache/arrow-datafusion/issues/2496
**Is your feature request related to a problem or challenge? Please describe
what you are trying to do.**
The logical plan for joins currently only supports equijoins on columns and
does not support joining on other expression types:
``` rust
/// Equijoin clause expressed as pairs of (left, right) join columns
pub on: Vec<(Column, Column)>,
```
**Describe the solution you'd like**
I would the SQL planner and logical plan to be able to model a wider range
of join conditions. At physical planning time, we would still need to fail for
now if the join is not an equijoin on columns.
**Describe alternatives you've considered**
None
**Additional context**
None
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