Need help with a MYSQL query grouping

Question

Table schema is set up something like this:

userID      Points       timestamp

1           40
3           20
1           10
4           15
3           5

Need to be able to present a report that shows the following:

Total Points Allocated for the Day (0 if none allocated), (nice to have) To what userID's the points were allocated to for that day

I tried the following and well as you can see is not correct

SELECT uid, DATE(time_stamp) AS date, SUM(points) AS total_points
FROM table
GROUP BY date

Answer 1

Assuming you had values as the timestamp, and I'll use the column names userid, points and time_stamp and a table name of userpoints:

SELECT userID,
       sum(points),
       date(timestamp) as date
FROM   userpoints
GROUP BY userID, date(timestamp)

So:

userID      Points       timestamp 

1           40           18-8-2010 12:00:00.000
3           20           18-8-2010 12:00:00.000
1           10           18-8-2010 12:00:00.000
4           15           18-8-2010 12:00:00.000
3           5            18-8-2010 12:00:00.000

Would result in:

userid      points       date
1           50           18-8-2010
3           25           18-8-2010
4           15           18-8-2010

UPDATE: Refined for UNIX Issue

SELECT userID,
       sum(points),
       from_unixtime(timestamp, 'DD-MM-YYYY') as date
FROM   userpoints
GROUP BY userID, date(timestamp)