我注意到如果我在某个集合的全文搜索启用字符串字段中输入值'seasons'，那么MongoDB在查询“season”时会找到此值。但如果我输入更复杂的东西，例如“老鼠”或“标准”，当我分别查询“鼠标”或“标准”时，它找不到这些值。这是正常的，是否有明确的规则，MongoDB能够阻止什么不是？
[test] 2014-03-30 18:25:09.551 >>> db.TestFullText7.find();
{
"_id" : ObjectId("53389720063ab25d2d55c94c"),
"dt" : ISODate("2014-03-30T22:13:52.717Z"),
"title" : "mice",
"txt" : "mice"
}
{
"_id" : ObjectId("5338994c063ab25d2d55c94d"),
"dt" : ISODate("2014-03-30T22:23:08.259Z"),
"title" : "criteria",
"txt" : "criteria"
}
{
"_id" : ObjectId("533899c5063ab25d2d55c94e"),
"dt" : ISODate("2014-03-30T22:25:09.551Z"),
"title" : "seasons",
"txt" : "seasons"
}
[test] 2014-03-30 18:25:13.295 >>> db.runCommand({"text" : "TestFullText7", "search" : "season"});
{
"queryDebugString" : "season||||||",
"language" : "english",
"results" : [
{
"score" : 2,
"obj" : {
"_id" : ObjectId("533899c5063ab25d2d55c94e"),
"dt" : ISODate("2014-03-30T22:25:09.551Z"),
"title" : "seasons",
"txt" : "seasons"
}
}
],
"stats" : {
"nscanned" : 1,
"nscannedObjects" : 0,
"n" : 1,
"nfound" : 1,
"timeMicros" : 148
},
"ok" : 1
}
[test] 2014-03-30 18:25:22.406 >>> db.runCommand({"text" : "TestFullText7", "search" : "mouse"});
{
"queryDebugString" : "mous||||||",
"language" : "english",
"results" : [ ],
"stats" : {
"nscanned" : 0,
"nscannedObjects" : 0,
"n" : 0,
"nfound" : 0,
"timeMicros" : 110
},
"ok" : 1
}
[test] 2014-03-30 18:25:30.986 >>> db.TestFullText7.getIndexes();
[
{
"v" : 1,
"key" : {
"_id" : 1
},
"ns" : "test.TestFullText7",
"name" : "_id_"
},
{
"v" : 1,
"key" : {
"_fts" : "text",
"_ftsx" : 1
},
"ns" : "test.TestFullText7",
"name" : "$**_text",
"weights" : {
"$**" : 1
},
"default_language" : "english",
"language_override" : "language",
"textIndexVersion" : 1
}
]
[test] 2014-03-30 18:25:45.228 >>>