Re: [Virtuoso-users] [Virtuoso-devel] bif:contains

[Ivan M. <imi...@op...>]

Hello Kunal,

The syntax of free-text queries is described in details in
http://docs.openlinksw.com/virtuoso/queryingftcols.html#textexprsyntax

Free-text is capable of looking weaker that an exact phrase but has no way to get more strict filtering. So you may start with bif:contains and additionally provide "like" operator in the filter. In this case free-text may work fist and provide a list of "more or less appropriate" hits and the filter will deal with short "appropriate list", not with everything.

Best Regards,

Ivan Mikhailov
OpenLink Software

----- Original Message ----- 
  From: Kunal Patel 
  To: Hugh Williams 
  Cc: vir...@li... ; virtuoso-users 
  Sent: Friday, April 25, 2008 8:25 AM
  Subject: Re: [Virtuoso-devel] bif:contains


  Thanks Hugh,

    The quotes work.  Also is there a way to do exact matches with bif:contains, for example a query to get all the people whose name is exactly "jack jill".

  Kunal

  Hugh Williams <hwi...@op...> wrote:
    Hi Kunal,


    The following query should work:



    select *
     from <people>
    where {?s foaf:Name ?name . ?name bif:contains "'jack jill'" .}


    Note the addition of single quotes within the double quotes which is how we handle phrases in bif:contains.


    Best Regards
    Hugh Wiilliams
    Professional Services
    OpenLink Software




    On 24 Apr 2008, at 21:41, Kunal Patel wrote:


      Hi,

        How can I use bif:contains predicate for a string value with multiple words.  For example when I run the following query it works fine,

      select *
        from <people>
       where {?s foaf:Name ?name . ?name bif:contains "jack" .}

      But trying to run the query below doesn't work.

      select *
        from <people>
       where {?s foaf:Name ?name . ?name bif:contains "jack jill" .}

      Kunal



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