Apache Solr Reference Guide Covering Apache Solr 6.0

enter:
http://localhost:8983/solr/collection_name/select?q=*:*&sort=dist(2, point1, point2)
desc
Sort by function also supports pseudo-fields: fields can be generated dynamically and return results as though it
was normal field in the index. For example,
&fl=id,sum(x, y),score
would return:
foo
40
0.343
Related Topics
FunctionQuery
Local Parameters in Queries
Local parameters are arguments in a Solr request that are specific to a query parameter. Local parameters
provide a way to add meta-data to certain argument types such as query strings. (In Solr documentation, local
parameters are sometimes referred to as LocalParams.)
Local parameters are specified as prefixes to arguments. Take the following query argument, for example:
q=solr rocks
We can prefix this query string with local parameters to provide more information to the Standard Query Parser.
For example, we can change the default operator type to "AND" and the default field to "title":
q={!q.op=AND df=title}solr rocks
These local parameters would change the query to require a match on both "solr" and "rocks" while searching
the "title" field by default.
Basic Syntax of Local Parameters
To specify a local parameter, insert the following before the argument to be modified:
Begin with {!
Insert any number of key=value pairs separated by white space
End with } and immediately follow with the query argument
You may specify only one local parameters prefix per argument. Values in the key-value pairs may be quoted via
single or double quotes, and backslash escaping works within quoted strings.
Query Type Short Form
If a local parameter value appears without a name, it is given the implicit name of "type". This allows short-form
representation for the type of query parser to use when parsing a query string. Thus
q={!dismax qf=myfield}solr rocks
Apache Solr Reference Guide 6.0
278