Re: Query parser problem, using fuzzy search

[David Frese]

Am 31.01.18 um 16:30 schrieb David Frese:

Am 29.01.18 um 18:05 schrieb Erick Erickson:

Try searching with lowercase the word and. Somehow you have to allow
the parser to distinguish the two.


Oh yeah, the biggest unsolved problem in the ~80 years history of 
programming languages... NOT ;-)



You _might_ be able to try "AND~2" (with quotes) to see if you can get
that through the parser. Kind of a hack, but


Well, the parser swallows that, but it's not a fuzzy search then anymore.


There's also a parameter (depending on the parser) about lowercasing
operators, so if and~2 doesn't work check thatl


And if both appear?

Well, thanks for your ideas - of course you are not the one to blame.



If anybody runs into the same problem, I found a possibility:

field:\AND~1

will find documents with field values similar to "AND".



--
David Frese
+49 7071 70896 75

Active Group GmbH
Hechinger Str. 12/1, 72072 Tübingen
Registergericht: Amtsgericht Stuttgart, HRB 224404
Geschäftsführer: Dr. Michael Sperber

Re: Query parser problem, using fuzzy search

[David Frese]

Am 29.01.18 um 18:05 schrieb Erick Erickson:

Try searching with lowercase the word and. Somehow you have to allow
the parser to distinguish the two.


Oh yeah, the biggest unsolved problem in the ~80 years history of 
programming languages... NOT ;-)



You _might_ be able to try "AND~2" (with quotes) to see if you can get
that through the parser. Kind of a hack, but


Well, the parser swallows that, but it's not a fuzzy search then anymore.


There's also a parameter (depending on the parser) about lowercasing
operators, so if and~2 doesn't work check thatl


And if both appear?

Well, thanks for your ideas - of course you are not the one to blame.



On Mon, Jan 29, 2018 at 8:32 AM, David Frese
 wrote:

Hello everybody,

how can I formulate a fuzzy query that works for an arbitrary string, resp.
is there a formal syntax definition somewhere?

I already found by by hand, that

field:"val"~2

Is read by the parser, but the fuzzyness seems to get lost. So I write

field:val~2

Now if val contain spaces and other special characters, I can escape them:

field:my\ val~2

But now I'm stuck with the term AND:

field:AND~2

Note that I do not want a boolean expression here, but I want to match the
string AND! But the parser complains:

"org.apache.solr.search.SyntaxError: Cannot parse 'field:AND~2': Encountered
\"  \"AND \"\" at line 1, column 4.\nWas expecting one of:\n
 ...\n\"(\" ...\n\"*\" ...\n ...\n
...\n ...\n ...\n  ...\n\"[\"
...\n\"{\" ...\n ...\n \"filter(\" ...\n ...\n
",




--
David Frese
+49 7071 70896 75

Active Group GmbH
Hechinger Str. 12/1, 72072 Tübingen
Registergericht: Amtsgericht Stuttgart, HRB 224404
Geschäftsführer: Dr. Michael Sperber

Re: Query parser problem, using fuzzy search

[Erick Erickson]

Try searching with lowercase the word and. Somehow you have to allow
the parser to distinguish the two.

You _might_ be able to try "AND~2" (with quotes) to see if you can get
that through the parser. Kind of a hack, but

There's also a parameter (depending on the parser) about lowercasing
operators, so if and~2 doesn't work check thatl

On Mon, Jan 29, 2018 at 8:32 AM, David Frese
 wrote:
> Hello everybody,
>
> how can I formulate a fuzzy query that works for an arbitrary string, resp.
> is there a formal syntax definition somewhere?
>
> I already found by by hand, that
>
> field:"val"~2
>
> Is read by the parser, but the fuzzyness seems to get lost. So I write
>
> field:val~2
>
> Now if val contain spaces and other special characters, I can escape them:
>
> field:my\ val~2
>
> But now I'm stuck with the term AND:
>
> field:AND~2
>
> Note that I do not want a boolean expression here, but I want to match the
> string AND! But the parser complains:
>
> "org.apache.solr.search.SyntaxError: Cannot parse 'field:AND~2': Encountered
> \"  \"AND \"\" at line 1, column 4.\nWas expecting one of:\n
>  ...\n\"(\" ...\n\"*\" ...\n ...\n
> ...\n ...\n ...\n  ...\n\"[\"
> ...\n\"{\" ...\n ...\n \"filter(\" ...\n ...\n
> ",
>
>
> Thanks for any hints and help.
>
> --
> David Frese
> +49 7071 70896 75
>
> Active Group GmbH
> Hechinger Str. 12/1, 72072 Tübingen
> Registergericht: Amtsgericht Stuttgart, HRB 224404
> Geschäftsführer: Dr. Michael Sperber