How to return 0 count for empty date ranges

Hi everyone... I am running this query which grabs activity per day for 10 days SELECT DATE_FORMAT( created, "%c/%d/%Y" ) AS `day` , COUNT( id ) AS 'activity' FROM `tracking` WHERE url_id = 1 GROUP BY DAY( created ) LIMIT 0 , 10 Which successfully returns activity by day: day activity 1/26/2010 5 2/01/2010 1 2/02/2010 1 2/03/2010 1 2/05/2010 8 2/06/2010 5 However, I am trying to get it to return "0"s for empty days, such as: day activity 1/26/2010 5 1/27/2010 0 1/28/2010 0 1/29/2010 0 1/30/2010 0 2/01/2010 1 2/02/2010 1 2/03/2010 1 2/05/2010 8 2/06/2010 5 Thanks in advance!

On 6 Feb, 21:57, John R <john...@gmail.com> wrote: > Hi everyone... > > I am running this query which grabs activity per day for 10 days > > SELECT DATE_FORMAT( created, =A0"%c/%d/%Y" ) AS =A0`day` , COUNT( id ) AS > 'activity' > FROM =A0`tracking` > WHERE url_id =3D 1 > GROUP BY DAY( created ) > LIMIT 0 , 10 > > Which successfully returns activity by day: > > day =A0 =A0 activity > 1/26/2010 =A0 =A0 =A0 5 > 2/01/2010 =A0 =A0 =A0 1 > 2/02/2010 =A0 =A0 =A0 1 > 2/03/2010 =A0 =A0 =A0 1 > 2/05/2010 =A0 =A0 =A0 8 > 2/06/2010 =A0 =A0 =A0 5 > > However, I am trying to get it to return "0"s for empty days, such as: > > day =A0 =A0 activity > 1/26/2010 =A0 =A0 =A0 5 > 1/27/2010 0 > 1/28/2010 0 > 1/29/2010 0 > 1/30/2010 0 > 2/01/2010 =A0 =A0 =A0 1 > 2/02/2010 =A0 =A0 =A0 1 > 2/03/2010 =A0 =A0 =A0 1 > 2/05/2010 =A0 =A0 =A0 8 > 2/06/2010 =A0 =A0 =A0 5 > > Thanks in advance! http://tinyurl.com/yc6fz4h /Lennart

On Feb 6, 3:11=A0pm, Lennart <erik.lennart.jons...@gmail.com> wrote: > On 6 Feb, 21:57, John R <john...@gmail.com> wrote: > > > > > > > Hi everyone... > > > I am running this query which grabs activity per day for 10 days > > > SELECT DATE_FORMAT( created, =A0"%c/%d/%Y" ) AS =A0`day` , COUNT( id ) = AS > > 'activity' > > FROM =A0`tracking` > > WHERE url_id =3D 1 > > GROUP BY DAY( created ) > > LIMIT 0 , 10 > > > Which successfully returns activity by day: > > > day =A0 =A0 activity > > 1/26/2010 =A0 =A0 =A0 5 > > 2/01/2010 =A0 =A0 =A0 1 > > 2/02/2010 =A0 =A0 =A0 1 > > 2/03/2010 =A0 =A0 =A0 1 > > 2/05/2010 =A0 =A0 =A0 8 > > 2/06/2010 =A0 =A0 =A0 5 > > > However, I am trying to get it to return "0"s for empty days, such as: > > > day =A0 =A0 activity > > 1/26/2010 =A0 =A0 =A0 5 > > 1/27/2010 0 > > 1/28/2010 0 > > 1/29/2010 0 > > 1/30/2010 0 > > 2/01/2010 =A0 =A0 =A0 1 > > 2/02/2010 =A0 =A0 =A0 1 > > 2/03/2010 =A0 =A0 =A0 1 > > 2/05/2010 =A0 =A0 =A0 8 > > 2/06/2010 =A0 =A0 =A0 5 > > > Thanks in advance! > > http://tinyurl.com/yc6fz4h > > /Lennart I have seen that method elsewhere, however I am still a bit confused on what I would need. A massive table of dates from now to the foreseeable future? Or a constantly changing table that just has the most recent 10 days dates?

On Sat, 06 Feb 2010 14:25:49 -0800, John R wrote: > On Feb 6, 3:11 pm, Lennart <erik.lennart.jons...@gmail.com> wrote: >> On 6 Feb, 21:57, John R <john...@gmail.com> wrote: >> >> >> >> >> >> > Hi everyone... >> >> > I am running this query which grabs activity per day for 10 days >> >> > SELECT DATE_FORMAT( created, "%c/%d/%Y" ) AS `day` , COUNT( id ) AS >> > 'activity' >> > FROM `tracking` >> > WHERE url_id = 1 >> > GROUP BY DAY( created ) >> > LIMIT 0 , 10 >> >> > Which successfully returns activity by day: >> >> > day activity >> > 1/26/2010 5 >> > 2/01/2010 1 >> > 2/02/2010 1 >> > 2/03/2010 1 >> > 2/05/2010 8 >> > 2/06/2010 5 >> >> > However, I am trying to get it to return "0"s for empty days, such >> > as: >> >> > day activity >> > 1/26/2010 5 >> > 1/27/2010 0 >> > 1/28/2010 0 >> > 1/29/2010 0 >> > 1/30/2010 0 >> > 2/01/2010 1 >> > 2/02/2010 1 >> > 2/03/2010 1 >> > 2/05/2010 8 >> > 2/06/2010 5 >> >> > Thanks in advance! >> >> http://tinyurl.com/yc6fz4h >> >> /Lennart > > I have seen that method elsewhere, however I am still a bit confused on > what I would need. A massive table of dates from now to the foreseeable > future? Or a constantly changing table that just has the most recent 10 > days dates? As I read it, a table with 31 rows containing the numbers 1 to 31. It's only necessary to cover all the possible days of the month.

On Feb 7, 6:28=A0am, Derek Turner <frde...@cesmail.net> wrote: > On Sat, 06 Feb 2010 14:25:49 -0800, John R wrote: > > On Feb 6, 3:11=A0pm, Lennart <erik.lennart.jons...@gmail.com> wrote: > >> On 6 Feb, 21:57, John R <john...@gmail.com> wrote: > > >> > Hi everyone... > > >> > I am running this query which grabs activity per day for 10 days > > >> > SELECT DATE_FORMAT( created, =A0"%c/%d/%Y" ) AS =A0`day` , COUNT( id= ) AS > >> > 'activity' > >> > FROM =A0`tracking` > >> > WHERE url_id =3D 1 > >> > GROUP BY DAY( created ) > >> > LIMIT 0 , 10 > > >> > Which successfully returns activity by day: > > >> > day =A0 =A0 activity > >> > 1/26/2010 =A0 =A0 =A0 5 > >> > 2/01/2010 =A0 =A0 =A0 1 > >> > 2/02/2010 =A0 =A0 =A0 1 > >> > 2/03/2010 =A0 =A0 =A0 1 > >> > 2/05/2010 =A0 =A0 =A0 8 > >> > 2/06/2010 =A0 =A0 =A0 5 > > >> > However, I am trying to get it to return "0"s for empty days, such > >> > as: > > >> > day =A0 =A0 activity > >> > 1/26/2010 =A0 =A0 =A0 5 > >> > 1/27/2010 0 > >> > 1/28/2010 0 > >> > 1/29/2010 0 > >> > 1/30/2010 0 > >> > 2/01/2010 =A0 =A0 =A0 1 > >> > 2/02/2010 =A0 =A0 =A0 1 > >> > 2/03/2010 =A0 =A0 =A0 1 > >> > 2/05/2010 =A0 =A0 =A0 8 > >> > 2/06/2010 =A0 =A0 =A0 5 > > >> > Thanks in advance! > > >>http://tinyurl.com/yc6fz4h > > >> /Lennart > > > I have seen that method elsewhere, however I am still a bit confused on > > what I would need. A massive table of dates from now to the foreseeable > > future? Or a constantly changing table that just has the most recent 10 > > days dates? > > As I read it, a table with 31 rows containing the numbers 1 to 31. It's > only necessary to cover all the possible days of the month. Thanks for the response. I still don't understand how this would work. My dates are stored in the DATETIME format. If I have a list of 1-31, how would I just match the last 10 days? Wouldn't you need the month and even the year?

On Mon, 08 Feb 2010 08:09:01 -0800, John R wrote: > Thanks for the response. I still don't understand how this would work. > My dates are stored in the DATETIME format. If I have a list of 1-31, > how would I just match the last 10 days? Wouldn't you need the month and > even the year? No, they're not. They are stored as the number of seconds since 1 January 1970. MySQL coverts that to the DATETIME format when you query the data base. There are a number of functions in MySQL that allow you to get the data out in whatever format you want. e.g. SELECT UNIX_TIMESTAMP(eventDate) AS unixdate, .... by using these in a complex query you can use an outside join on the 31- row table to return your null values. That's how I read it, but I've never done it!

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