[Solr Wiki] Update of "StandardRequestHandler" by ErikHatcher

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The following page has been changed by ErikHatcher:
http://wiki.apache.org/solr/StandardRequestHandler

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  Other then the optional sort specification the only difference between how this query string is parsed, and how the Lucene !QueryParser works, is that by default, the Solr !QueryParser uses constant score variations of Range and Prefix queries by default, so you don't need to worry about the dreaded "Too Many Clauses" exception.  Open-ended range queries are also supported by using "*" as an end-point.
  
+ == q.op ==
+ 
+ Specifies the default operator for query expressions, overriding the default operator specified in SchemaXml.  Possible values are "AND" or "OR".
+ 
  == df ==
  
  This parameter overrides the default field defined in SchemaXml, if provided.