Suppose that my database looks something like the following:

```
First Entry | Second Entry | Third Entry
    0              0              0
    0              1              2
    2              1              0 
    2              0              1
    3              0              0

```

I am trying to return the subset of this table where an element in the `FirstEntry` column repeats at least once. So in this case it would return all but the final row. How can I go about this? I've tried using things such as `count()` but have only managed to achieve grouping instead of returning the actual rows I am curious in (in particular, I care aboout Second and Third entry but only when First entry has repeated at least once).