Elasticsearch 权威指南 －－－内容记录

第一节Relational DB -> Databases -> Tables -> Rows -> Columns
Elasticsearch -> Indices   -> Types  -> Documents -> Fields

1.6小节"match" : {
            "about" : "rock climbing"
        }

会hit到两条记录如下：

{
   ...
   "hits": {
      "total":      2,
      "max_score":  0.16273327,
      "hits": [
         {
            ...
            "_score":         0.16273327, <1>
            "_source": {
               "first_name":  "John",
               "last_name":   "Smith",
               "age":         25,
               "about":       "I love to go rock climbing",
               "interests": [ "sports", "music" ]
            }
         },
         {
            ...
            "_score":         0.016878016, <2>
            "_source": {
               "first_name":  "Jane",
               "last_name":   "Smith",
               "age":         32,
               "about":       "I like to collect rock albums",
               "interests": [ "music" ]
            }
         }
      ]
   }
}

<1>比<2>的_score高，因为<2>只匹配到rock，没有climbing

如果想精确匹配"rock climbing"这个单词的话，把match改成match_phrase来匹配短语