Get total record count in Lucene or SQL SERVER Full Text Search -


i have table named tags. within table have id, tag name. find total record count group when user type in prefix words in web page textbox. same stackoverflow.com.

when user type in "sql" word ,the result below: enter image description here

something work. note leading wildcard can very slow on large index.

ramdirectory dir = new ramdirectory(); indexwriter iw = new indexwriter(dir, new keywordanalyzer(), indexwriter.maxfieldlength.unlimited);  document d = new document(); field f = new field("tag", "", field.store.yes, field.index.analyzed); d.add(f);  f.setvalue("sql"); iw.adddocument(d); f.setvalue("mysql"); iw.adddocument(d); f.setvalue("sql-server"); iw.adddocument(d); f.setvalue("sql-server"); iw.adddocument(d); f.setvalue("sql-server"); iw.adddocument(d); f.setvalue("c#"); iw.adddocument(d); f.setvalue("java"); iw.adddocument(d); f.setvalue("java"); iw.adddocument(d);  iw.commit(); indexreader reader = iw.getreader(); console.writeline("tags containing sql"); using (filteredtermenum termenum = new wildcardtermenum(reader, new term("tag", "*sql*"))) {         {         if (termenum.term != null)             console.writeline(termenum.term.text + ":" + reader.docfreq(termenum.term));     }     while (termenum.next()); } console.writeline("\ntags containing java"); using (filteredtermenum termenum = new wildcardtermenum(reader, new term("tag", "*java*"))) {         {         if (termenum.term != null)             console.writeline(termenum.term.text + ":" + reader.docfreq(termenum.term));     }     while (termenum.next()); } reader.dispose(); iw.dispose();

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