MySQL Query to get count of unique values?

Question

Hits Table:

hid | lid | IP
1   | 1   | 123.123.123.123
2   | 1   | 123.123.123.123
3   | 2   | 123.123.123.123
4   | 2   | 123.123.123.123
5   | 2   | 123.123.123.124
6   | 2   | 123.123.123.124
7   | 3   | 123.123.123.124
8   | 3   | 123.123.123.124
9   | 3   | 123.123.123.124

As you can see, there following are the unique hits for the various lid:

lid 1: 1 unique hit
lid 2: 2 unique hits
lid 3: 1 unique hit

So basically, I need a query that will return the following:

lid | uhits |
1   | 1     |
2   | 2     |
3   | 1     |

Anybody know how to get that?

Answer 1

SELECT lid, COUNT(DISTINCT IP)  
FROM hits  
GROUP BY lid

Answer 2

Select lid, count(distinct IP) as uhits
from hits
group by lid