MySQL Group By Dates Between

Question

Is there a way to group records that fall between two dates?

For example, my table has records that look like this:

rid     stamp                   u         


        

Answer 1

In slight combination of the others... you can expand the case structure for however range specific you want. The group by respects the "ordinal" column 1 position so you don't have to copy the same case condition in the group by clause. Additionally, I threw in the Order by to have same context of the case since it would otherwise order the results alphabetically. You can order by whatever you wanted... even in reverse if you wanted most current date activity listed first.

SELECT
      case when stamp between "2005-07-01" and "2006-02-01"
              then "July 2005 - January 2006   "
           when stamp between "2006-02-01" and "2006-08-01"
              then "February 2006 - August 2006"
           else    "After August 2006          "
      end as GroupColumn,
      count(*) as TotalPerGroup
   from  
      table
   where 
      date >= '2005-07-01'
   group by 
      1
   order by 
      case when stamp between "2005-07-01" and "2006-02-01"
              then 1
           when stamp between "2006-02-01" and "2006-08-01"
              then 2
           else    3
      end