Index: roundup/backends/rdbms_common.py
===================================================================
--- roundup/backends/rdbms_common.py	(revision 4205)
+++ roundup/backends/rdbms_common.py	(working copy)
@@ -2312,6 +2312,22 @@
                     except ValueError:
                         # If range creation fails - ignore that search parameter
                         pass
+            elif isinstance(propclass, Number) and v is not None:
+                # Bare-bones support for interval searches against Number
+                try:
+                    if float(v) == abs(int(v)):
+                        where.append('_%s._%s = %s'%(pln, k, a))
+                        args.append(v)
+                except ValueError:
+                    try:
+                        v0, v1 = v[0], v[1:]
+                        if v0 in ('<', '>'):
+                            if float(v1) != abs(int(v1)):
+                                raise ValueError
+                            where.append('_%s._%s %s %s'%(pln, k, v0, a))
+                            args.append(v1)
+                    except (IndexError, ValueError):
+                            pass
             elif isinstance(propclass, Interval):
                 # filter/sort using the __<prop>_int__ column
                 if p.sort_type < 2: