用于提升查询的弹性搜索parsing_exception

Question

我试图使用弹性搜索来提升查询。最近公布的头条新闻必须得到提升，并且应该是最重要的。但是，我已经返回以下代码：

{
"query": {
"function_score": {
"query": {
    "bool": {
            "must": {
                  "match": { 
                       "keywords": {
                          "query":"trump"
                                       }
                                  }
                             },
       "should": [
           { "match": {
                     "type": {
                             "query": "headline"
               }
           }}
       ]}},  

    "functions": [
        { "boost":  5 },
        {
        "gauss": {
        "versioncreated": {
        "origin": "now/d", 
        "scale": "50w", 
        "offset": "4w", 
        "decay": "0.5" 
}}}],
        "score_mode": "sum"
}
}}

我收到此错误： -

{
   "error": {
      "root_cause": [
     {
        "type": "parsing_exception",
        "reason": "no [score_function] registered for [params]",
        "line": 24,
        "col": 20
     }
      ],
      "type": "parsing_exception",
      "reason": "no [score_function] registered for [params]",
      "line": 24,
      "col": 20
   },
   "status": 400
}

Answer 1

你查询有点不对劲。你想做什么呢？

lookup()

如果您想提升它，请尝试使用此查询

"functions": [
        { "boost":  5 },