查询Solr的绝对值的最简单方法

Question

I know similar questions have been asked WRT function querying, but I'd like to simply query Solr for a field with absolute value greater than or equal to something. for example, field change can be a negative or positive integer. I'd like to query (REST) along the lines of abs(change):[2 TO *]. How would I accomplish this/is it possible?

Thanks in adv.

Answer 1

Function Range Query Parser can be used for this:

{!frange l=2}abs(change)

There is also a possibility to include(default)/exclude lower and upper bounds if needed. More details available in Solr wiki .

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Update

In case there is a need to combine the function query with a regular one, the magic _val_ field name can be used:

field1:("xxxx") AND _val_:"{!frange l=2}abs(change)"