The first query is parsed as a TermQuery whilst the second as a PrefixQuery (since it only contains a trailing asterisk). Don't know about PrefixQueries if they are the same as WildcardQueries in the sence where a larger prefix decreases the number of terms it needs to enumerate to find matches.
Look at 3.4.7 & 3.5.5 in Lucene in Action. //Daniel 2010/8/8 Ayende Rahien <aye...@ayende.com> > I run into an interesting perf issue just now. > > 100 runs of this query: "Name:WILLY" @ 224ms > 100 runs of this query: "Name:WIL*" @ 790ms > > There are ~5000 documents in the index, two fields, Name is using > StandardAnalyzer. > > Is there supposed to be that big a perf difference between the two? >
