Thanks you for your answer.
But, is it possible to group clauses with a "not". exemple:
type:product NOT (name:"toto" OR name:"titi") ??
Christophe
Mark Miller a écrit :
Personally, I think of it as not a 'not' operator, but more a 'but
not' or 'and not' operator. Thats not totally the case I believe, but
gives you semantics that work. Truly I think that each part of the
query creates a score and the NOT query scores 0. That gives a
different result than a boolean system. More than a few times it has
been mentioned that Lucene is a scoring system and not a boolean system.
- Mark
christophe leroy wrote:
Hello,
I don't understand how to use "not" with Lucene. I
think that it is not a boolean not. I read the
documentation but it is not clear enough on how the
"not" works.
For example, I tried to do this request:
type:product
--> I got 100 responses. It is normal. Then, I tried
this request:
type:product AND name:test --> I got 1 response. It is normal too.
And when I
tried this request:
type:product AND (name:test OR NOT name:test)
--> I got 1 response only. I should normally get 100
responses if the "not" was a boolean not.
Could you explain me how the "not" works?
Thank in advance,
Christophe
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