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    <p>You can use <code>SUM(condition)</code> on a single use of the <code>tbl_user_work_settings</code> table:</p> <pre><code>// get total days worked, unpaid days, bank holidays, holidays, sicknesses // and absences within given date range for given users $sql = " SELECT users.username, SUM(ws.isUnpaid ='1') AS unpaidDays, SUM(ws.isBankHoliday ='1') AS bankHolidays, SUM(ws.isHoliday ='1') AS holidays, SUM(ws.isSickness ='1') AS sicknesses, SUM(ws.isOtherAbsence='1') AS absences, COUNT(DISTINCT DATE(cl.in_time)) AS daysWorked, SUM(cl.seconds_duration) AS secondsWorked FROM users LEFT JOIN tbl_user_work_settings AS ws ON ws.username = users.username AND ws.selectedDate BETWEEN '$startDate' AND '$endDate' LEFT JOIN tbl_clockins AS cl ON cl.username = users.username AND DATE(cl.in_time) BETWEEN '$startDate' AND '$endDate' WHERE users.clockin_valid='1'"; if(count($selectedUsers)&gt;0) $sql .= " AND users.username IN ('" . implode("','", $selectedUsers) . "')"; $sql .= " GROUP BY users.username ORDER BY users.username ASC"; </code></pre> <p>By the way (and perhaps more for the benefit of other readers), I <strong>really</strong> hope that you are avoiding SQL injection attacks by properly escaping your PHP variables before inserting them into your SQL. Ideally, you shouldn't do that at all, but instead pass such variables to MySQL as the parameters of a prepared statement (which don't get evaluated for SQL): read more about <a href="http://bobby-tables.com" rel="nofollow">Bobby Tables</a>.</p> <p>Also, as an aside, why are you handling integer types as strings (by enclosing them in single quote characters)? That's needless and a waste of resource in MySQL having to perform unnecessary type conversion. Indeed, if the various <code>isUnpaid</code> etc. columns are all <code>0</code>/<code>1</code>, you can change the above to remove the equality test and just use <code>SUM(ws.isUnpaid)</code> etc. directly.</p>
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    1. COremove " isUnpaid = '1'" from where clause.
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      1. USRomil Kumar Jain
    2. CO@Romil: Thanks, just spotted that too!
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    3. COHi, many thanks for the replies and suggestions. I took the solution you gave above and had to modify it slightly to get it to work, but I now have a working solution. I have included it below for your reference
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