I am new to Druid and just started playing with it. I have a quick question regarding queries: it seems that filters can only be applied to dimensions and dimensions can only be strings. Furthermore, there does not seem to be range options for filters, i.e., return all rows whose specific column have values in a specific range. So, I cannot run multidimensional range queries on numeric columns in a straightforward way. For example, assume that we have a column called price that has numerical values. Now, I want to find all records whose price value is between 100 and 200. I was just wondering if what I said is correct or I am missing something.