Question

I am trying to retrieve statistical data between December of the previous year and November of the current year. The date column of my table has the data type of date.

The following SQL works fine with the obvious problem that it only works if the year is manually changed. How would one accomplish the same with a dynamically changing year for this time period?

SELECT date, SUM(numCalls) AS callTotal FROM callstats_callData
WHERE date BETWEEN '2011-12-01' AND '2012-11-01'
GROUP BY date ORDER BY date

The data is being retrieved from a MySQL table by PHP.

UPDATE

The code below works but I was hoping to have an SQL based solution.

$date1 = (date("Y") - 1) . '12-01';
$date2 = date("Y") . '-11-01';
$fetchTotals = $this->contentDB->prepare("SELECT date, SUM(numCalls) AS callTotal FROM callstats_callData
WHERE date BETWEEN ? AND ?
GROUP BY date ORDER BY date");
$fetchTotals->execute(array($date1, $date2));
$totals = $fetchTotals->fetchAll();

Working Example

This is to retrieve the call data for the Total Calls chart here. The results need to be retrieved in a loop in order to display the total for each month in that period of time. This page is currently working properly using the PHP & MySQL code above, just hoping for an SQL based solution.

Answer 1

This gives you a bit of flexibility in selecting arbitrary month and day values for updated queries – as you set in your posted PHP code:

SELECT date, SUM(numCalls) AS callTotal 
FROM callstats_callData
WHERE DATE(date) 
BETWEEN CONCAT(YEAR(CURDATE())-1,'-12-01') AND CONCAT(YEAR(CURDATE()),'-11-01')
GROUP BY date ORDER BY date;