[Developers] Multiple Wildcards in MQL Query

James Taylor jame0taylor at gmail.com
Sat Jan 3 23:13:02 UTC 2009


Concatenating results is not idea.  Is there a way to solve this in a single
query by combining the 'pattern matching' operator and the 'one of'
operator?

Something like (which doesn't work):
[
  {
    "name" : null,
    "name|=" : [
      "^0*",
      "^1*",
      "^2*"
    ],
    "type" : "/base/bioventurist/science_or_technology_company"
  }
]

-JT

On Sat, Jan 3, 2009 at 2:37 PM, Kurt Bollacker <kurt at metaweb.com> wrote:

>
> Your query is simply the logical intersection of the name constraints,
> rather than the union ("OR") that you wanted.  You could write each of
> your 10 queries like:
>
> [
>  {
>      "a:name~=" : "^0*",
>       "name" : null,
>      "type" : "/base/bioventurist/science_or_technology_company"
>  }
> ]
>
> and concatenate the results.  Currently, MQL pattern matching does not
> have a "full set" of regular expressions.
>
>
>                                                                Kurt :-)
>
>
>
> On Sat, Jan 03, 2009 at 02:06:43PM -0800, Rob Warren wrote:
> > Hi,
> >
> > I was wondering if anybody has any experience using multiple wildcards
> > within a single MQL query?
> >
> > I am trying to write a single query that returns all names that begin
> with a
> > number for a given type (e.g. for "type" :
> > "/base/bioventurist/science_or_technology_company", I want freebase to
> > return 3M, 454 Life Sciences, 23andme etc.).
> >
> > I have tried using property prefixes such as in the example below and not
> > had any luck.
> >
> > [
> >   {
> >     "a:name~=" : "^0*",
> >     "b:name~=" : "^1*",
> >     "c:name~=" : "^2*",
> >     "d:name~=" : "^3*",
> >     "e:name~=" : "^4*",
> >     "f:name~=" : "^5*",
> >     "g:name~=" : "^6*",
> >     "h:name~=" : "^7*",
> >     "i:name~=" : "^8*",
> >     "j:name~=" : "^9*",
> >     "name" : null,
> >    "type" : "/base/bioventurist/science_or_technology_company"
> >   }
> > ]
> >
> > I am unsure as to how to combine wildcards and either numeric comparisons
> > "one of" operators and am not sure if this is even an effective solution.
> >
> > Any suggestions or help would be much appreciated.
>
> > _______________________________________________
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> > Developers at freebase.com
> > http://lists.freebase.com/mailman/listinfo/developers
>
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