ElasticSearch(7.2.2)-搜索的简单使⽤
- 2019 年 10 月 30 日
- 筆記
版权声明：本文为博主原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
本文链接：https://blog.csdn.net/weixin_42528266/article/details/102799417
准备⼯作
- 删掉nba索引
- DELETE localhost:9200/nba
- 新建⼀个索引,并且指定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document
- 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(词条)查询和full text(全⽂)查询
- 词条查询：词条查询不会分析查询条件，只有当词条和查询字符串完全匹配时，才匹配搜索。
- 全⽂查询：ElasticSearch引擎会先分析查询字符串，将其拆分成多个分词，只要已分析的字段中包含词条的任意⼀个，或全部包含，就匹配查询条件，返回该⽂档；如果不包含任意⼀个分词，表示没有任何⽂档匹配查询条件
单条term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" ] } } }
{ "took": 21, "timed_out": false, "_shards": { "total": 1, "successful": 1, "skipped": 0, "failed": 0 }, "hits": { "total": { "value": 2, "relation": "eq" }, "max_score": 1, "hits": [{ "_index": "nba", "_type": "_doc", "_id": "1", "_score": 1, "_source": { "name": "哈登", "team_name": "⽕箭", "position": "得分后卫", "play_year": 10, "jerse_no": "13" } }, { "_index": "nba", "_type": "_doc", "_id": "3", "_score": 1, "_source": { "name": "詹姆斯", "team_name": "湖⼈", "position": "⼩前锋", "play_year": 15, "jerse_no": "23" } } ] } }
match_all
- POST localhost:9200/nba/_search
{ "query": { "match_all": {} }, "from": 0, "size": 10 }
{ "took": 9, "timed_out": false, "_shards": { "total": 1, "successful": 1, "skipped": 0, "failed": 0 }, "hits": { "total": { "value": 3, "relation": "eq" }, "max_score": 1, "hits": [{ "_index": "nba", "_type": "_doc", "_id": "1", "_score": 1, "_source": { "name": "哈登", "team_name": "⽕箭", "position": "得分后卫", "play_year": 10, "jerse_no": "13" } }, { "_index": "nba", "_type": "_doc", "_id": "2", "_score": 1, "_source": { "name": "库⾥", "team_name": "勇⼠", "position": "控球后卫", "play_year": 10, "jerse_no": "30" } }, { "_index": "nba", "_type": "_doc", "_id": "3", "_score": 1, "_source": { "name": "詹姆斯", "team_name": "湖⼈", "position": "⼩前锋", "play_year": 15, "jerse_no": "23" } } ] } }
match
- POST localhost:9200/nba/_search
{ "query": { "match": { "position": "后卫" } } }
{ "took": 89, "timed_out": false, "_shards": { "total": 1, "successful": 1, "skipped": 0, "failed": 0 }, "hits": { "total": { "value": 2, "relation": "eq" }, "max_score": 0.90630186, "hits": [{ "_index": "nba", "_type": "_doc", "_id": "1", "_score": 0.90630186, "_source": { "name": "哈登", "team_name": "⽕箭", "position": "得分后卫", "play_year": 10, "jerse_no": "13" } }, { "_index": "nba", "_type": "_doc", "_id": "2", "_score": 0.90630186, "_source": { "name": "库⾥", "team_name": "勇⼠", "position": "控球后卫", "play_year": 10, "jerse_no": "30" } } ] } }
multi_match
- 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" } }
- POST localhost:9200/nba/_search
{ "query": { "multi_match": { "query": "shooter", "fields": ["title", "name"] } } }
{ "query": { "multi_match": { "query": "shooter", "fields": ["*title", "name"] } } }
match_phrase
- post localhost:9200/nba/_search
{ "query": { "match_phrase": { "position": "得分后卫" } } }
{ "took": 4, "timed_out": false, "_shards": { "total": 1, "successful": 1, "skipped": 0, "failed": 0 }, "hits": { "total": { "value": 1, "relation": "eq" }, "max_score": 3.0384295, "hits": [{ "_index": "nba", "_type": "_doc", "_id": "1", "_score": 3.0384295, "_source": { "name": "哈登", "team_name": "⽕箭", "position": "得分后卫", "play_year": 10, "jerse_no": "13" } }] } }
match_phrase_prefix
- 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" } }
- POST localhost:9200/nba/_search
{ "query": { "match_phrase_prefix": { "title": "the best s" } } }
