Question

I have a table that looks like this:

ID  t_stamp         views uviews hits uhits
1   7/18/2012 19:00 105   11     0    0
5   7/18/2012 20:00 1     1      0    0
2   7/19/2012 9:00  118   4      0    0
1   7/19/2012 10:00 196   18     0    0
7   7/19/2012 11:00 2     1      0    0
2   7/19/2012 12:00 38    11     0    0
2   7/19/2012 13:00 20    5      0    0
2   7/19/2012 19:00 9     2      0    0
2   7/20/2012 15:00 85    6      0    0
1   7/20/2012 16:00 483   101    2    2
2   7/20/2012 17:00 1200  240    0    0
2   7/20/2012 18:00 1200  232    0    0
2   7/20/2012 19:00 1199  231    0    0
2   7/20/2012 20:00 1200  236    0    0
2   7/20/2012 21:00 1201  237    0    0
1   7/20/2012 22:00 1220  187    0    0
1   7/20/2012 23:00 869   165    0    0

And my method is to combine them by the day so I can get a SUM for each of the last four columns. The IDs do not really matter.

I am using this:

SELECT `bannerID` , DATE_FORMAT( `t_stamp` , '%m/%d/%Y' ) AS `date` ,
SUM( `views` ) AS `views` , SUM( `uviews` ) AS `uviews` , SUM( `hits` ) AS `hits` , SUM( `uhits` ) AS `uhits`
FROM test_bannerstats
WHERE DATE( t_stamp ) >= DATE( '2012-07-01' )
AND DATE( t_stamp ) <= DATE( '2012-08-24' )
GROUP BY `date`
ORDER BY `date` ASC

However that doesn’t seem correct to me as that the numbers seem conflicting. In the end I want to get a daily tally the last four columns by day.

EDIT:

It is a problem with time zones it looks! I will show you why…

Look at the table above, now let’s do the additions for the entire day…

1   07/18/2012  106     12    0     0
1   07/19/2012  383     41    0     0
1   07/20/2012  8657    1635  2     2

Above is correct. Below is wrong.

1   07/18/2012  105     11    0     0
1   07/19/2012  384     42    0     0
1   07/20/2012  4167    810   2     2

The problem? Anything after 8pm is going to the next day. It is a timezone issue that I have to sort out it seems.

Answer 1

Your query can be simplified as:

SELECT `bannerID`,
        DATE_FORMAT( `t_stamp` , '%m/%d/%Y' ) AS `date`,
        SUM( `views` ) AS `views`,
        SUM( `uviews` ) AS `uviews`,
        SUM( `hits` ) AS `hits`,
        SUM( `uhits` ) AS `uhits`
FROM    test_bannerstats
WHERE   DATE( t_stamp ) BETWEEN '2012-07-01' AND '2012-08-24'
GROUP BY DATE(t_stamp)
ORDER BY DATE(t_stamp) ASC;