SELECT browser,
MIN(CAST(version AS DECIMAL(4,1))) minVersion,
MAX(CAST(version AS DECIMAL(4,1))) maxVersion,
MAX(c.stamp) lastVisit,
COUNT(DISTINCT c.id) visits,
SUM(a.firstAccessFk = c.id AND v.firstAgentFk = a.id) newVisits
FROM visitUser e
JOIN visitAccess c ON c.id = e.accessFk
JOIN visitAgent a ON a.id = c.agentFk
JOIN visit v ON v.id = a.visitFk
WHERE c.stamp BETWEEN TIMESTAMP(#from,'00:00:00') AND TIMESTAMP(#to,'23:59:59')
GROUP BY browser ORDER BY visits DESC