Question

Here’s a table I have with DATETIMEs in and out. I’d like to sum the TIMEDIFFs per p_ID and group them by p_ID.

t_ID p_ID   t_IN                     t_OUT
1    1      2011-07-13 18:54:56      2011-07-13 20:16:12
2    1      2011-07-14 09:26:56      2011-07-14 09:46:02
3    1      2011-07-14 10:06:39      2011-07-14 10:56:31
4    3      2011-07-14 13:07:04      2011-07-14 13:58:35

I’ve tried a few MySQL commands to no avail… My last attempt looked like this:

SELECT p_ID, TIME_FORMAT(SUM(TIMEDIFF(t_OUT,t_IN)),'%H:%i') AS time FROM timeclock GROUP BY p_ID

I’m guessing my command is not summing per record per p_ID… Any help?

Answer 1

Figured it out:

$timeDiffReq = mysql_query("CREATE VIEW totals AS SELECT p_ID, TIME_TO_SEC(TIMEDIFF(t_OUT,t_IN)) AS time FROM timeclock");
$timeTotalReq = mysql_query("SELECT p_ID, SEC_TO_TIME(SUM(time)) AS timetotals FROM totals GROUP BY p_ID");
while($row = mysql_fetch_array($timeTotalReq)) {
echo "<div class=\"clockInOut\"><div id=\"name\">" . $row['p_ID'] . " - " . $row['timetotals'] . "</div></div>";}
$timeTotalDrop = mysql_query("DROP VIEW totals");