Earlier I asked a question related to it, and as suggested by the poster, this new question created the following question:
MongoDB full text search - matching words and exact phrases
I had some problems with unexpected results when using full-text search in MongoDB, especially when searching for mixtures of words and phrases.
Using this useful example presented by the poster in the previous question ...
> db.test.drop()
> db.test.insert({ "t" : "I'm on time, not late or delayed" })
> db.test.insert({ "t" : "I'm either late or delayed" })
> db.test.insert({ "t" : "Time flies like a banana" })
> db.test.ensureIndex({ "t" : "text" })
> db.test.find({ "$text" : { "$search" : "time late delay" } }, { "_id" : 0 })
{ "t" : "I'm on time, not late or delayed" }
{ "t" : "Time flies like a banana" }
{ "t" : "I'm either late or delayed" }
> db.test.find({ "$text" : { "$search" : "late delay" } }, { "_id" : 0 })
{ "t" : "I'm on time, not late or delayed" }
{ "t" : "I'm either late or delayed" }
> db.test.find({ "$text" : { "$search" : "late delay \"on time\"" } }, { "_id" : 0 })
{ "t" : "I'm on time, not late or delayed" }
The first two queries behave as I expected, the first search for “time OR late delay OR”, and the second for “delay with delay OR”.
, http://docs.mongodb.org/manual/reference/operator/query/text/#phrases, , , "" OR delay AND ( " " ) ".
, " (" ") ?