wesm/pandas — Issue #214: Add multi-key join capability
Author: wesm
Created: 2011-10-11 17:54:16+00:00
State: open
Labels: Enhancement

API would look like

```python
a.join(b, on=['foo', 'bar'])
```

where 'foo', and 'bar' are columns in a and b is indexed by a MultiIndex with 2 levels