我是Elasticsearch的新手。
有人可以解释为什么进行此搜索(NEST 6
):
var searchResponse1 = this.elasticClient.Search<dynamic>(
s => s.AllTypes().AllIndices().IgnoreUnavailable().Size(100).From(0)
.Query(q => q.Bool(b => b.Must(m => m.SimpleQueryString(c => c.Query("query"))))));
正确地导致以下请求(我是使用Fiddler获得的:)
POST https://someUrl.com/_search?pretty=true&error_trace=true&typed_keys=true&ignore_unavailable=true HTTP/1.1
{
"from": 0,
"query": {
"bool": {
"must": [
{
"simple_query_string": {
"query": "query"
}
}
]
}
},
"size": 100
}
但是以下两项都搜索'MatchPhrasePrefix':
var searchResponse2 = this.elasticClient.Search<dynamic>(
s => s.AllTypes().AllIndices().IgnoreUnavailable().Size(100).From(0)
.Query(q => q.Bool(b => b.Must(m => m.MatchPhrasePrefix(c => c.Query("query"))))));
var searchResponse3 = this.elasticClient.Search<dynamic>(
s => s.AllTypes().AllIndices().IgnoreUnavailable().Size(100).From(0)
.Query(q => q.MatchPhrasePrefix(p => p.Query("query"))));
结果:
POST https://someUrl.com/_search?pretty=true&error_trace=true&typed_keys=true&ignore_unavailable=true HTTP/1.1
{
"from": 0,
"size": 100
}
我在这里想念什么?
MatchPhrasePrefix
查询必须还指定要定位的字段。例如
var searchResponse2 = client.Search<dynamic>(s => s
.AllTypes()
.AllIndices()
.IgnoreUnavailable()
.Size(100)
.From(0)
.Query(q => q
.Bool(b => b
.Must(m => m
.MatchPhrasePrefix(c => c
.Field("some_field") // <-- target the "some_field" field
.Query("query")
)
)
)
)
);
导致查询的结果
POST /_search { "from": 0, "query": { "bool": { "must": [ { "match_phrase_prefix": { "some_field": { "query": "query" } } } ] } }, "size": 100 }
没有指定该字段,该查询在客户端中被视为无条件,并且将从响应中省略。 an issue讨论是否应在下一个主要版本中删除conditionless查询。