如何更好的学习Elasticsearch DSL
原创如何更好的学习Elasticsearch DSL
原创
周银辉
修改于 2024-07-11 11:53:35
修改于 2024-07-11 11:53:35
一、结构化查询
结构化查询样例数据
DELETE users;
GET users/_mapping
PUT users/_bulk
{ "index": { "_id": "1" } }
{ "name": "Alice", "age": 25, "status": "active", "description": "Alice loves hiking and outdoor activities." }
{ "index": { "_id": "2" } }
{ "name": "Bob", "age": 30, "status": "inactive", "description": "Bob is a software engineer who enjoys coding." }
{ "index": { "_id": "3" } }
{ "name": "Charlie", "age": 35, "status": "pending", "description": "Charlie is a photographer and loves to travel." }
{ "index": { "_id": "4" } }
{ "name": "David", "age": 40, "status": "active", "description": "David is a data scientist with a passion for machine learning." }
{ "index": { "_id": "5" } }
{ "name": "Eve", "age": 45, "status": "inactive", "description": "Eve is a project manager who enjoys reading." }1、term查询
GET users/_search
{
"query": {
"term": {
"description": {
"value": "loves hiking and outdoor"
}
}
}
}2、terms查询
GET users/_search
{
"query": {
"terms":{
"status":["active","inactive"]
}
}
}3、range 查询
GET users/_search
{
"query": {
"range": {
"age": {
"gte": 20,
"lte": 250
}
}
}
}4、exist
GET users/_search
{
"query": {
"exists": {
"field": "description1"
}
}
}5、prefix
GET users/_search
{
"query": {
"prefix": {
"status": {
"value": "act"
}
}
}
}6、wildcard
GET users/_search
{
"query": {
"wildcard": {
"status": {
"value": "inact*"
}
}
}
}7、 regexp
GET users/_search
{
"query": {
"regexp": {
"description": "**love.*"
}
}
}8、fuzzy
GET users/_search
{
"query": {
"fuzzy": {
"name": {
"value": "davd"
}
}
}
}9、匹配特定id
GET users/_search
{
"query": {
"ids": {
"values": ["1","4"]
}
}
}10、用于filter查询
GET users/_search
{
"query": {
"constant_score": {
"filter": {
"term": {
"status": "active"
}
},
"boost": 1.5
}
}
}GET users/_search
{
"query": {
"term": {
"status": "active"
}
}
}GET users/_search
{
"query": {
"match": {
"status": "active"
}
}
}二、全文查询
POST /books/_bulk
{ "index": { "_index": "books", "_id": "1" } }
{ "title": "Elasticsearch Guide", "description": "A comprehensive guide to Elasticsearch, the powerful search engine." }
{ "index": { "_index": "books", "_id": "2" } }
{ "title": "Learning Elasticsearch", "description": "Learn how to use Elasticsearch for search and data analysis." }
{ "index": { "_index": "books", "_id": "3" } }
{ "title": "Elasticsearch in Action", "description": "A practical book on how to implement Elasticsearch in real-world scenarios." }
{ "index": { "_index": "books", "_id": "4" } }
{ "title": "Mastering Elasticsearch", "description": "Advanced techniques and best practices for Elasticsearch." }
{ "index": { "_index": "books", "_id": "5" } }
{ "title": "Elasticsearch Essentials", "description": "Essential knowledge for getting started with Elasticsearch." }1、match query
GET /books/_search
{
"query": {
"match": {
"title": "Learning Elasticsearch"
}
}
}- 因为match查询是分词后查询，默认是或的关系，所以会把learning或elasticsearch相关联的文档查出来。
- 可以加上operator:"and"，查询他们且的关系。
GET /books/_search
{
"query": {
"match": {
"title": {
"query": "Learning Elasticsearch",
"operator": "and"
}
}
}
}2、match phrase
GET /books/_search
{
"query": {
"match_phrase": {
"title": "Learning Elasticsearch"
}
}
}3、multi match query
GET /books/_search
{
"query": {
"multi_match": {
"query": "Elasticsearch",
"fields": ["title","description"]
}
}
}4、 query string query
GET /books/_search
{
"query": {
"query_string": {
"query": "guide OR learning" ,
"fields": ["title", "description"]
}
}
}5、simple query string query
GET /books/_search
{
"query": {
"simple_query_string": {
"query": "guide +learning",
"fields": ["title", "description"]
}
}
}6、 common terms query
GET /books/_search
{
"query": {
"common": {
"description": {
"query":"Elasticsearch guide",
"cutoff_frequency": 0.001
}
}
}
}7、 match_all
GET /books/_search
{
"query": {
"match_all": {}
}
}原创声明：本文系作者授权腾讯云开发者社区发表，未经许可，不得转载。
如有侵权，请联系 cloudcommunity@tencent.com 删除。
原创声明：本文系作者授权腾讯云开发者社区发表，未经许可，不得转载。
如有侵权，请联系 cloudcommunity@tencent.com 删除。
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