hadley/plyr — Issue #74: Join with no common rows
Author: hadley
Created: 2012-01-30 15:12:09+00:00
State: open

```R
library(plyr)

a <- data.frame(a = 1:10)
b <- data.frame(b = 1:10)

join(a, b, type = "left") # should be 10 rows
join(a, b, type = "right") # should be 10 rows
join(a, b, type = "full") # should be 20 rows
join(a, b, type = "inner") # should be no rows
```

Thanks to bug report by Franckx Laurent