FunctionQuery - Solr WikiFunctionQuery allows one to use the actual value of a field and functions of those fields in a relevancy score. What is a Function? A function can be: A Constant (numeric or string literal) - See "constant" and "literal" below. A Field - See "fieldvalue" below. Also see notes later on multivalued/vector fields. Another Function Solr4.0 A parameter substitution: $arg, where arg is another function
