amazon-web-services - 结构化查询中的短语和术语有什么区别？

Question

结构化查询中的短语和术语有何不同？

我的 CloudSearch 域中有此数据:

{
    "guid": 9,
    "operating_systems": [
        "12345", "123"
    ],
    "manufacturer": "sealand",
    "model": "gaming tree whale plum",
    "identifier": "gaming tree whale plum",
    "type": "computer",
    "created_at": "1982-10-14T14:43:54Z"
}

"model" 是 text 类型，"identifier" 是 literal 类型，"created_at “ 是日期类型。

让我们问几个问题:

(phrase field=model 'tree whale')                match
(phrase field= identifier 'tree whale')          no match
(phrase 'tree whale')                            match
(phrase field=created_at '1982-10-14T14:43:54Z') match (this shouldn't match according to docs)

(term field=model 'tree whale')                match
(term field= identifier 'tree whale')          no match
(term 'tree whale')                            match
(term field=created_at '1982-10-14T14:43:54Z') match

是否有什么事情是我可以用 phrase 做而用 term 做不到的，反之亦然？

Answer 1

如果有人想知道，事实证明短语搜索匹配整个短语，而术语搜索匹配可能是短语但可能是散布在文档中的单词的术语。示例:

文字:

"model": gaming tree whale plum

以下保留:

(phrase field=model 'tree whale')                match
(phrase field=model 'tree plum')                 no match

(term field=model 'tree whale')                  match
(term field=model 'tree plum')                   match