Going to make a line graph. I want to query count with difference of 5 days. Suppose if I have following rows:
booking_date
2015-02-1
2015-02-3
2015-02-5
2015-02-6
2015-02-6
2015-02-9
2015-02-10
2015-02-15
2015-02-17
2015-02-23
2015-02-28
In above table column it contains date. Now How can I do mysql query so that it can return with difference of 5 days like:
1 => 3 // count of date between 2015-02-1 & 2015-02-05 is 3
2 => 4 // count of date between 2015-02-06 & 2015-02-10 is 4
3 => 1 // count of date between 2015-02-11 & 2015-02-15 is 1
4 => 1 // count of date between 2015-02-16 & 2015-02-20 is 1
5 => 1 // count of date between 2015-02-21 & 2015-02-25 is 1
6 => 1 // count of date between 2015-02-26 & 2015-02-30 is 1
Is any direct way to query like above. I am not so good at mysql. But can do php nicely.
You can do the following to get everything in the same query.
First of all get the unix timestamp for the date you want to start grouping in 5 days. In your example that would be 2015-02-01 -> 1422748800
Then the query would be the following:
SELECT COUNT(*), FLOOR((UNIX_TIMESTAMP(booking_date) - 1422748800)/ (60*60*24*5)) as FiveDayPackNumber from tbl GROUP BY FLOOR((UNIX_TIMESTAMP(booking_date) - 1422748800)/ (60*60*24*5))
Haven't tested it so it may require some tweaking but you can get the idea: It will group them by the number of 5-days-packs that passed since your initial date, starting at 0.
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