无限范围查询（Unbounded range queries）

If the upper or lower bound of a range does not tokenize to a sensible value for the property type, the query will be treated as unbounded.
如果范围的上限或下限没有标记为属性类型的可感知值，则查询将被视为无边界查询。

@test\:integer:[3 TO MAX]

This is find any integer equal to or greater than 3.
上述语句查找任何等于或大于3的整数。

By convention, MIN and MAX are good tokens for numeric and date types. For string types \u0000 and \uFFFF are good conventions.
按照惯例，MIN和MAX是数值和日期类型的好标记。对于字符串类型\u0000和\uFFFF是比较好的选择。