Re: problem with formulating a negative query

[Chris Hostetter <ho...@fucit.org>]

: thanks for your explanations. But why are all docs being *removed* from the
: set of all docs that contain R in their topic field? This would correspond to
: a boolean AND and would stand in conflict with the clause q.op=OR. This seems
: a bit strange to me.

Erick's explanation might have been a tad missleading ... it's not an 
ordered operation, AND, OR, and NOT are just syntactic-sugar for modifying 
the MUST, MUST_NOT, and SHOULD.  The default op of "OR" only affects the 
first clause of your query (R) because it doesn't have any modifiers -- 
the second clause has that NOT modifier so your query is effectivley...

	topic:R -topic:[* TO *]

...which by definition can't match anything.

-Hoss

Re: problem with formulating a negative query

[Sascha Szott <sz...@zib.de>]

Hi,

Chris Hostetter wrote:
> AND, OR, and NOT are just syntactic-sugar for modifying
> the MUST, MUST_NOT, and SHOULD.  The default op of "OR" only affects the
> first clause of your query (R) because it doesn't have any modifiers --
Thanks for pointing that out!

-Sascha

> the second clause has that NOT modifier so your query is effectivley...
>
> 	topic:R -topic:[* TO *]
>
> ...which by definition can't match anything.
>
> -Hoss
>