[Solr Wiki] Trivial Update of "FunctionQuery" by GrantIngersoll

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The following page has been changed by GrantIngersoll:
http://wiki.apache.org/solr/FunctionQuery

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   1. Use a parameter that has an explicit type of FunctionQuery, such as DisMaxRequestHandler's '''bf''' (boost function) parameter.
      * NOTE: the '''bf''' parameter actually takes a list of function queries separated by whitespace and each with an optional boost.  Make sure to eliminate any internal whitespace in single function queries when using '''bf'''.
      * Example: {{{q=foo&bf="ord(popularity)^0.5 recip(rord(price),1,1000,1000)^0.3"}}}
+ 
+ See http://wiki.apache.org/solr/SolrPlugins#head-566d72e9c5e48b8c9fd8ae5c898d9e06917a7bb3 for information on how to hook in your own FunctionQuery.
  
  = Function Query Syntax =
  There is currently no infix parser - functions must be expressed as function calls (e.g. sum(a,b) instead of a+b)