ElasticSearch（四）：基本搜索
ElasticSearch（四）：基本搜索
學習課程連接《Elasticsearch核心技術與實戰》java
<br/> ## URI Search 使用HTTP的GET方法，在URL中使用查詢參數進行查詢。 ``` GET /movies/_search?q=2012&df=title&sort=year:desc&from=0&size=10&timeout=1s { "profile":"true" } ``` * `q`指定查詢語句，使用`Query String Syntax` * `df`默認字段，若不指定，會對全部字段進行查詢 * `sort`用於排序 * `from`、`size`用於分頁 * `profile`用於展現查詢是如何被執行的node
#基本查詢 GET /movies/_search?q=2012&df=title&sort=year:desc&from=0&size=10&timeout=1s
#基本查詢返回結果
{
"took" : 50,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 2,
"relation" : "eq"
},
"max_score" : null,
"hits" : [
{
"_index" : "movies",
"_type" : "_doc",
"_id" : "105254",
"_score" : null,
"_source" : {
"id" : "105254",
"genre" : [
"Adventure",
"Comedy"
],
"title" : "Crystal Fairy & the Magical Cactus and 2012",
"year" : 2013,
"@version" : "1"
},
"sort" : [
2013
]
},
{
"_index" : "movies",
"_type" : "_doc",
"_id" : "72378",
"_score" : null,
"_source" : {
"id" : "72378",
"genre" : [
"Action",
"Drama",
"Sci-Fi",
"Thriller"
],
"title" : "2012",
"year" : 2009,
"@version" : "1"
},
"sort" : [
2009
]
}
]
}
}
#帶profile
GET /movies/_search?q=2012&df=title
{
"profile":"true"
}
#指定字段q=title:2012等價於q=2012&df=title
GET /movies/_search?q=title:2012&sort=year:desc&from=0&size=10&timeout=1s
{
"profile":"true"
}
#帶profile返回結果
{
"took" : 14,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 2,
"relation" : "eq"
},
"max_score" : 11.303033,
"hits" : [
{
"_index" : "movies",
"_type" : "_doc",
"_id" : "72378",
"_score" : 11.303033,
"_source" : {
"id" : "72378",
"genre" : [
"Action",
"Drama",
"Sci-Fi",
"Thriller"
],
"title" : "2012",#只查詢title中的2012
"year" : 2009,
"@version" : "1"
}
},
{
"_index" : "movies",
"_type" : "_doc",
"_id" : "105254",
"_score" : 5.2497,
"_source" : {
"id" : "105254",
"genre" : [
"Adventure",
"Comedy"
],
"title" : "Crystal Fairy & the Magical Cactus and 2012",
"year" : 2013,
"@version" : "1"
}
}
]
},
"profile" : {
"shards" : [
{
"id" : "[u-4S1mfbQiuA1Bqe-wfPJQ][movies][0]",
"searches" : [
{
"query" : [
{
"type" : "TermQuery",
"description" : "title:2012",
"time_in_nanos" : 1105745,
"breakdown" : {
"set_min_competitive_score_count" : 0,
"match_count" : 0,
"shallow_advance_count" : 0,
"set_min_competitive_score" : 0,
"next_doc" : 7966,
"match" : 0,
"next_doc_count" : 4,
"score_count" : 2,
"compute_max_score_count" : 0,
"compute_max_score" : 0,
"advance" : 0,
"advance_count" : 0,
"score" : 133876,
"build_scorer_count" : 9,
"create_weight" : 187971,
"shallow_advance" : 0,
"create_weight_count" : 1,
"build_scorer" : 775916
}
}
],
"rewrite_time" : 4990,
"collector" : [
{
"name" : "CancellableCollector",
"reason" : "search_cancelled",
"time_in_nanos" : 574426,
"children" : [
{
"name" : "SimpleTopScoreDocCollector",
"reason" : "search_top_hits",
"time_in_nanos" : 158099
}
]
}
]
}
],
"aggregations" : [ ]
}
]
}
}
#泛查詢，正對_all,全部字段，查詢全部字段中的2012
GET /movies/_search?q=2012
{
"profile":"true"
}
#使用引號，Phrase查詢，還要求先後順序保持一致，"Beautiful Mind"等效於Beautiful AND Mind
GET /movies/_search?q=title:"Beautiful Mind"
{
"profile":"true"
}
#Phrase查詢返回結果
{
"took" : 16,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 13.68748,
"hits" : [
{
"_index" : "movies",
"_type" : "_doc",
"_id" : "4995",
"_score" : 13.68748,
"_source" : {
"id" : "4995",
"genre" : [
"Drama",
"Romance"
],
"title" : "Beautiful Mind, A", #查詢條件
"year" : 2001,
"@version" : "1"
}
}
]
},
"profile" : {
"shards" : [
{
"id" : "[u-4S1mfbQiuA1Bqe-wfPJQ][movies][0]",
"searches" : [
{
"query" : [
{
"type" : "PhraseQuery", #查詢類型爲PhraseQuery
"description" : """title:"beautiful mind"""",
"time_in_nanos" : 10670089,
"breakdown" : {
"set_min_competitive_score_count" : 0,
"match_count" : 1,
"shallow_advance_count" : 0,
"set_min_competitive_score" : 0,
"next_doc" : 28250,
"match" : 27343,
"next_doc_count" : 3,
"score_count" : 1,
"compute_max_score_count" : 0,
"compute_max_score" : 0,
"advance" : 0,
"advance_count" : 0,
"score" : 9171,
"build_scorer_count" : 9,
"create_weight" : 7583491,
"shallow_advance" : 0,
"create_weight_count" : 1,
"build_scorer" : 3021819
}
}
],
"rewrite_time" : 7818,
"collector" : [
{
"name" : "CancellableCollector",
"reason" : "search_cancelled",
"time_in_nanos" : 39950,
"children" : [
{
"name" : "SimpleTopScoreDocCollector",
"reason" : "search_top_hits",
"time_in_nanos" : 25137
}
]
}
]
}
],
"aggregations" : [ ]
}
]
}
}
# Term查詢爲泛查詢，(Beautiful Mind)等效於Beautiful OR Mind
GET /movies/_search?q=title:(Beautiful Mind)
{
"profile":"true"
}
{
"took" : 10,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 20,
"relation" : "eq"
},
"max_score" : 13.687479,
"hits" : [
{
"_index" : "movies",
"_type" : "_doc",
"_id" : "4995",
"_score" : 13.687479,
"_source" : {
"id" : "4995",
"genre" : [
"Drama",
"Romance"
],
"title" : "Beautiful Mind, A",
"year" : 2001,
"@version" : "1"
}
},
{
"_index" : "movies",
"_type" : "_doc",
"_id" : "3912",
"_score" : 8.723258,
"_source" : {
"id" : "3912",
"genre" : [
"Comedy",
"Drama"
],
"title" : "Beautiful",
"year" : 2000,
"@version" : "1"
}
},
{
"_index" : "movies",
"_type" : "_doc",
"_id" : "47404",
"_score" : 8.576847,
"_source" : {
"id" : "47404",
"genre" : [
"Adventure",
"Animation",
"Comedy",
"Fantasy",
"Romance",
"Sci-Fi"
],
"title" : "Mind Game",
"year" : 2004,
"@version" : "1"
}
},
{
"_index" : "movies",
"_type" : "_doc",
"_id" : "1046",
"_score" : 7.317063,
"_source" : {
"id" : "1046",
"genre" : [
"Drama",
"Romance"
],
"title" : "Beautiful Thing",
"year" : 1996,
"@version" : "1"
}
},
{
"_index" : "movies",
"_type" : "_doc",
"_id" : "3302",
"_score" : 7.317063,
"_source" : {
"id" : "3302",
"genre" : [
"Comedy"
],
"title" : "Beautiful People",
"year" : 1999,
"@version" : "1"
}
},
{
"_index" : "movies",
"_type" : "_doc",
"_id" : "4242",
"_score" : 7.317063,
"_source" : {
"id" : "4242",
"genre" : [
"Comedy",
"Crime",
"Drama",
"Thriller"
],
"title" : "Beautiful Creatures",
"year" : 2000,
"@version" : "1"
}
},
{
"_index" : "movies",
"_type" : "_doc",
"_id" : "4372",
"_score" : 7.317063,
"_source" : {
"id" : "4372",
"genre" : [
"Drama",
"Romance"
],
"title" : "Crazy/Beautiful",
"year" : 2001,
"@version" : "1"
}
},
{
"_index" : "movies",
"_type" : "_doc",
"_id" : "94",
"_score" : 7.317063,
"_source" : {
"id" : "94",
"genre" : [
"Comedy",
"Drama",
"Romance"
],
"title" : "Beautiful Girls",
"year" : 1996,
"@version" : "1"
}
},
{
"_index" : "movies",
"_type" : "_doc",
"_id" : "90353",
"_score" : 7.317063,
"_source" : {
"id" : "90353",
"genre" : [
"Drama"
],
"title" : "Beautiful Boy",
"year" : 2010,
"@version" : "1"
}
},
{
"_index" : "movies",
"_type" : "_doc",
"_id" : "100487",
"_score" : 7.317063,
"_source" : {
"id" : "100487",
"genre" : [
"Drama",
"Fantasy",
"Romance"
],
"title" : "Beautiful Creatures",
"year" : 2013,
"@version" : "1"
}
}
]
},
"profile" : {
"shards" : [
{
"id" : "[u-4S1mfbQiuA1Bqe-wfPJQ][movies][0]",
"searches" : [
{
"query" : [
{
"type" : "BooleanQuery",
"description" : "title:beautiful title:mind",
"time_in_nanos" : 963305,
"breakdown" : {
"set_min_competitive_score_count" : 0,
"match_count" : 6,
"shallow_advance_count" : 0,
"set_min_competitive_score" : 0,
"next_doc" : 133259,
"match" : 2086,
"next_doc_count" : 27,
"score_count" : 20,
"compute_max_score_count" : 0,
"compute_max_score" : 0,
"advance" : 0,
"advance_count" : 0,
"score" : 32590,
"build_scorer_count" : 14,
"create_weight" : 401324,
"shallow_advance" : 0,
"create_weight_count" : 1,
"build_scorer" : 393978
},
"children" : [
{
"type" : "TermQuery",
"description" : "title:beautiful",
"time_in_nanos" : 492649,
"breakdown" : {
"set_min_competitive_score_count" : 0,
"match_count" : 0,
"shallow_advance_count" : 6,
"set_min_competitive_score" : 0,
"next_doc" : 49055,
"match" : 0,
"next_doc_count" : 15,
"score_count" : 16,
"compute_max_score_count" : 6,
"compute_max_score" : 85498,
"advance" : 6172,
"advance_count" : 6,
"score" : 20213,
"build_scorer_count" : 17,
"create_weight" : 255976,
"shallow_advance" : 4730,
"create_weight_count" : 1,
"build_scorer" : 70938
}
},
{
"type" : "TermQuery",
"description" : "title:mind",
"time_in_nanos" : 187326,
"breakdown" : {
"set_min_competitive_score_count" : 0,
"match_count" : 0,
"shallow_advance_count" : 6,
"set_min_competitive_score" : 0,
"next_doc" : 2447,
"match" : 0,
"next_doc_count" : 4,
"score_count" : 5,
"compute_max_score_count" : 6,
"compute_max_score" : 11373,
"advance" : 4506,
"advance_count" : 5,
"score" : 5483,
"build_scorer_count" : 15,
"create_weight" : 120204,
"shallow_advance" : 3324,
"create_weight_count" : 1,
"build_scorer" : 39947
}
}
]
}
],
"rewrite_time" : 16452,
"collector" : [
{
"name" : "CancellableCollector",
"reason" : "search_cancelled",
"time_in_nanos" : 85953,
"children" : [
{
"name" : "SimpleTopScoreDocCollector",
"reason" : "search_top_hits",
"time_in_nanos" : 60755
}
]
}
]
}
],
"aggregations" : [ ]
}
]
}
}
#布爾操做符
# 必須包括Beautiful 和 Mind
GET /movies/_search?q=title:(Beautiful AND Mind)
{
"profile":"true"
}
# 必須包括Beautiful 但不能包括 Mind
GET /movies/_search?q=title:(Beautiful NOT Mind)
{
"profile":"true"
}
#‘%2B’即爲‘+’號表示必須包括包括 Mind
GET /movies/_search?q=title:(Beautiful %2BMind)
{
"profile":"true"
}
#範圍查詢 ,區間寫法年份在2002~2018
GET /movies/_search?q=title:beautiful AND year:[2002 TO 2018]
{
"profile":"true"
}
#通配符查詢
GET /movies/_search?q=title:b*
{
"profile":"true"
}
#模糊匹配&近似度匹配
GET /movies/_search?q=title:beautifl~1
{
"profile":"true"
}
GET /movies/_search?q=title:"Lord Rings"~2
{
"profile":"true"
}
<br/> ## Request Body Search 使用Elasticsearch提供的，基於JSON格式的更加完備的Query Domain Specific Language (DSL)golang
#query查詢
#ignore_unavailable=true，能夠忽略嘗試訪問不存在的索引「404_idx」致使的報錯
POST /movies,404_idx/_search?ignore_unavailable=true
{
"profile": true,
"query": {
"match_all": {}
}
}
#查詢movies分頁
POST /movies/_search
{
"from":10,
"size":20,
"query":{
"match_all": {}
}
}
#對日期排序
POST kibana_sample_data_ecommerce/_search
{
"sort":[{"order_date":"desc"}],
"query":{
"match_all": {}
}
}
#_source 過濾顯示的字段
POST kibana_sample_data_ecommerce/_search
{
"_source":["order_date"],#返回結果只顯示"order_date"
"query":{
"match_all": {}
}
}
#腳本字段
GET kibana_sample_data_ecommerce/_search
{
"script_fields": {
"new_field": {
"script": {
"lang": "painless",
"source": "doc['order_date'].value+'hello'"
}
}
},
"query": {
"match_all": {}
}
}
#match查詢，last OR christmas
POST movies/_search
{
"query": {
"match": {
"title": "last christmas"
}
}
}
#match查詢，last AND christmas
POST movies/_search
{
"query": {
"match": {
"title": {
"query": "last christmas",
"operator": "and"
}
}
}
}
#match_phrase查詢，one AND love，且順序不能亂
POST movies/_search
{
"query": {
"match_phrase": {
"title":{
"query": "one love"#不能夠查出 "title" : "One I Love, The",
}
}
}
}
#match_phrase查詢，slop在one love中間插入指定數量單詞
POST movies/_search
{
"query": {
"match_phrase": {
"title":{
"query": "one love",#能夠查出 "title" : "One I Love, The",
"slop": 1
}
}
}
}
PUT /users/_doc/1
{
"name":"Ruan Yiming",
"about":"java, golang, node, swift, elasticsearch"
}
PUT /users/_doc/2
{
"name":"Li Yiming",
"about":"Hadoop"
}
#query_string查詢
POST users/_search
{
"query": {
"query_string": {
"default_field": "name",
"query": "Ruan AND Yiming"
}
}
}
#query_string查詢
POST users/_search
{
"query": {
"query_string": {
"fields":["name","about"],
"query": "(Ruan AND Yiming) OR (Java AND Elasticsearch)"
}
}
}
#Simple Query 相似query_string查詢，但會忽略錯誤的語法，同時只支持部分查詢語法；默認的operator是 Or，能夠指定；不支持AND OR NOT，會當字符串處理；支持部分邏輯+替代AND，|替代OR，-替代NOT
POST users/_search
{
"query": {
"simple_query_string": {
"query": "Ruan AND Yiming",
"fields": ["name"]
}
}
}
#Simple Query
POST users/_search
{
"query": {
"simple_query_string": {
"query": "Ruan Yiming",
"fields": ["name"],
"default_operator": "AND"
}
}
}
GET /movies/_search
{
"profile": true,
"query":{
"query_string":{
"default_field": "title",
"query": "Beafiful AND Mind"
}
}
}
# 多fields
GET /movies/_search
{
"profile": true,
"query":{
"query_string":{
"fields":[
"title",
"year"
],
"query": "2012"
}
}
}
GET /movies/_search
{
"profile":true,
"query":{
"simple_query_string":{
"query":"Beautiful +mind",
"fields":["title"]
}
}
}
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