ElasticSearch(7.2.2)-搜索的簡單使⽤
- 2019 年 10 月 30 日
- 筆記
版權聲明：本文為部落客原創文章，遵循 CC 4.0 BY-SA 版權協議，轉載請附上原文出處鏈接和本聲明。
本文鏈接：https://blog.csdn.net/weixin_42528266/article/details/102799417
準備⼯作
- 刪掉nba索引
- DELETE localhost:9200/nba
- 新建⼀個索引,並且指定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": "得分後衛", "play_year": 10, "jerse_no": "13" }
- PUT localhost:9200/nba/_doc/2
{ "name": "庫⾥", "team_name": "勇⼠", "position": "控球後衛", "play_year": 10, "jerse_no": "30" }
- PUT localhost:9200/nba/_doc/3
{ "name": "詹姆斯", "team_name": "湖⼈", "position": "⼩前鋒", "play_year": 15, "jerse_no": "23" }
term(詞條)查詢和full text(全⽂)查詢
- 詞條查詢：詞條查詢不會分析查詢條件，只有當詞條和查詢字元串完全匹配時，才匹配搜索。
- 全⽂查詢：ElasticSearch引擎會先分析查詢字元串，將其拆分成多個分詞，只要已分析的欄位中包含詞條的任意⼀個，或全部包含，就匹配查詢條件，返回該⽂檔；如果不包含任意⼀個分詞，表示沒有任何⽂檔匹配查詢條件
單條term查詢
- POST localhost:9200/nba/_search
{ "query": { "term": { "jerse_no": "23" } } }
多條term查詢
- 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": "得分後衛", "play_year": 10, "jerse_no": "13" } }, { "_index": "nba", "_type": "_doc", "_id": "3", "_score": 1, "_source": { "name": "詹姆斯", "team_name": "湖⼈", "position": "⼩前鋒", "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": "得分後衛", "play_year": 10, "jerse_no": "13" } }, { "_index": "nba", "_type": "_doc", "_id": "2", "_score": 1, "_source": { "name": "庫⾥", "team_name": "勇⼠", "position": "控球後衛", "play_year": 10, "jerse_no": "30" } }, { "_index": "nba", "_type": "_doc", "_id": "3", "_score": 1, "_source": { "name": "詹姆斯", "team_name": "湖⼈", "position": "⼩前鋒", "play_year": 15, "jerse_no": "23" } } ] } }
match
- POST localhost:9200/nba/_search
{ "query": { "match": { "position": "後衛" } } }
{ "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": "得分後衛", "play_year": 10, "jerse_no": "13" } }, { "_index": "nba", "_type": "_doc", "_id": "2", "_score": 0.90630186, "_source": { "name": "庫⾥", "team_name": "勇⼠", "position": "控球後衛", "play_year": 10, "jerse_no": "30" } } ] } }
multi_match
- POST localhost:9200/nba/_update/2
{ "doc": { "name": "庫⾥", "team_name": "勇⼠", "position": "控球後衛", "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": "得分後衛" } } }
{ "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": "得分後衛", "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": "⼩前鋒", "play_year": 15, "jerse_no": "23", "title": "the best small forward" } }
- POST localhost:9200/nba/_search
{ "query": { "match_phrase_prefix": { "title": "the best s" } } }
