id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
1021	detselect should treat NULL values as always matching	eugene	jhoblitt	"in detselect, it seems that a NULL value in one of the restriction fields (eg, exp_time_max) is treated as a 0.0 value.  this may work for the minima, but it does not work for the maxima.  If, for example, we search by exptime, then we get the constraints:
exp_time_min < exptime + epsilon AND
exp_time_max > exptime + epsilon 

if the detRun has exp_time_max set to NULL, the second condition is never true.  the logic should instead be something like:

((exp_time_min IS NULL) OR (exp_time_min < exptime + epsilon)) AND
((exp_time_max IS NULL) OR (exp_time_max > exptime + epsilon))"	enhancement	closed	high		ippTools	unspecified	minor	fixed