Question

I have a database that looks like this: (dates are formated with strtotime)

ID  Date            
1   1338366170000
2   1337761370000
3   1337761370000
4   1337761370000
5   1337156570000
6   1331713370000
7   1331713370000

As you can see some entries are from the same date. I would now like to grab each date and the count how often it occurs.

So the end result would look like:

Date: 1338366170000
Count: 1

Date: 1337761370000
Count: 3

Date: 1337156570000
Count: 1 

Date: 1331713370000
Count: 2 

I am currently doing this to get all dates and count each date:

First I grab all rows:

$stats      = $sql->query("SELECT * FROM stats_clicks");

Now, I think the problems begin when I try to count the entries with same date: I loop through all results and search for each date and count it.

foreach($sql->get() as $result){

    //Sum clicks for each date
    $date   = $result["date"];

    $stats  = $sql->query("SELECT * FROM stats_clicks WHERE date = '$date'");
    $count  = count($sql->get());

    echo "Date: $date<br>Count: $count<br><br>";

}

The output is:

Date: 1338366170000
Count: 1

Date: 1337761370000
Count: 3

Date: 1337761370000
Count: 3

Date: 1337761370000
Count: 3

Date: 1337156570000
Count: 1 

Date: 1331713370000
Count: 2 

Date: 1331713370000
Count: 2 

How can I avoid outputing each date multiple times, but instead each date only once with the correct count?

Answer 1

SELECT `Date`, COUNT(`Date`) as `Count`
FROM stats_clicks
GROUP BY `Date`

Result

Date    Count
1331713370000   2
1337156570000   1
1337761370000   3
1338366170000   1