简单搜索

深藏阁楼爱情的钟 2022-10-22 07:56 253阅读 0赞

# 简单搜索 #

### 预置学习数据 ###

# 删除索引
    DELETE localhost:9200/nba
    
    # 创建索引,指定mapping
    PUT localhost:9200/nba
    { 
        "mappings": { 
            "properties": { 
                "name": { 
                    "type": "text"
                },
                "team_name": { 
                    "type": "text"
                },
                "position": { 
                    "type": "text"
                },
                "play_year": { 
                    "type": "long"
                },
                "jerse_no": { 
                    "type": "keyword"
                }
            }
        }
    }
    
    # 新增文档 
    PUT localhost:9200/nba/_doc/1
    { 
        "name": "哈登",
        "team_name": "火箭",
        "position": "得分后卫",
        "play_year": 10,
        "jerse_no": "13"
    }
    
    PUT localhost:9200/nba/_doc/2
    { 
        "name": "库里",
        "team_name": "勇士",
        "position": "控球后卫",
        "play_year": 10,
        "jerse_no": "30"
    }
    
    PUT localhost:9200/nba/_doc/3
    { 
        "name": "詹姆斯",
        "team_name": "湖人",
        "position": "小前锋",
        "play_year": 15,
        "jerse_no": "23"
    }

### term 和 text 区别 ###

# term
    对应keyword
    词条查询,词条查询不会分析查询条件,只有完全匹配才会查出。
    
    # text
    对应text
    全文查询,会分词,查询到任意一个就可以查出。

### term查询 ###

# 单条查询
    POST localhost:9200/nba/_search
    { 
        "query": { 
            "term": { 
                "jerse_no": "23"
            }
        }
    }
    
    # 多条term查询
    POST localhost:9200/nba/_search
    { 
        "query": { 
            "terms": { 
                "jerse_no": [
                    "23",
                    "13"
                ]
            }
        }
    }

### match\_all 查询所有 ###

POST localhost:9200/nba/_search
    { 
        "query": { 
            "match_all": { }
        },
        "from": 0,
        "size": 10
    }

### match ###

# match查询会进行分词,命中一个词就符合条件
    POST localhost:9200/nba/_search
    { 
        "query": { 
            "match": { 
                "position": "控后1卫"
            }
        }
    }

### multi\_match ###

# 先更新文档
    POST localhost:9200/nba/_update/2
    { 
        "doc": { 
            "name": "库里",
            "team_name": "勇士",
            "position": "控球后卫",
            "play_year": 10,
            "jerse_no": "30",
            "title": "the best shooter"
        }
    }
    
    # 使用multi_match查询
    # title或name有shooter的文档
    POST localhost:9200/nba/_search
    { 
        "query": { 
            "multi_match": { 
                "query": "shooter",
                "fields": [
                    "title",
                    "name"
                ]
            }
        }
    }

### match\_phrase ###

# 精确查询
    # 得分后,得分后卫都可以查询出
    # 后卫会查询出2条
    # 得分后卫111, 会查询不到数据、
    post localhost:9200/nba/_search
    { 
        "query": { 
            "match_phrase": { 
                "position": "得分后卫"
            }
        }
    }

### match\_phrase\_prefix ###

# 先更新
    POST localhost:9200/nba/_update/2
    { 
        "doc": { 
            "name": "库里",
            "team_name": "勇士",
            "position": "控球后卫",
            "play_year": 10,
            "jerse_no": "30",
            "title": "the best 3-point shooter"
        }
    }
    
    POST localhost:9200/nba/_update/3
    { 
        "doc": { 
            "name": "詹姆斯",
            "team_name": "湖人",
            "position": "小前锋",
            "play_year": 15,
            "jerse_no": "23",
            "title": "the best small forward"
        }
    }
    
    # 查询 精确前置匹配
    POST localhost:9200/nba/_search
    { 
        "query": { 
            "match_phrase_prefix": { 
                "title": "the best s"
            }
        }
    }
    
    # 查询
    POST localhost:9200/nba/_search
    { 
        "query": { 
            "match_phrase_prefix": { 
                "title": "the best 3"
            }
        }
    }