1,匹配查询(match)
match
查询主要的应用场景是进行全文搜索;
// 1,初始化数据
DELETE /my_index
PUT /my_index
{ "settings": { "number_of_shards": 1 }}
POST /my_index/my_type/_bulk
{ "index": { "_id": 1 }}
{ "title": "The quick brown fox" }
{ "index": { "_id": 2 }}
{ "title": "The quick brown fox jumps over the lazy dog" }
{ "index": { "_id": 3 }}
{ "title": "The quick brown fox jumps over the quick dog" }
{ "index": { "_id": 4 }}
{ "title": "Brown fox brown dog" }
// 2,match 单个词查询
GET /my_index/my_type/_search
{
"query":{
"match":{
"title":"QUICK!"
}
}
}
// 3,match 多词查询
GET /my_index/my_type/_search
{
"query":{
"match":{
"title":"BROWN DOG!"
}
}
}
// 3.1 operator 操作符,默认值为or
GET /my_index/my_type/_search
{
"query":{
"match":{
"title":{
"query":"BROWN DOG!",
"operator":"and"
}
}
}
}
// 3.2 minimum_should_match 最小匹配参数
GET /my_index/my_type/_search
{
"query":{
"match":{
"title":{
"query":"quick brown dog",
"minimum_should_match": "75%"
}
}
}
}
2,组合查询
// 组合查询
GET /my_index/my_type/_search
{
"query":{
"bool":{
"must":{"match":{"title":"quick"}},
"must_not":{"match":{"title":"lazy"}},
"should":[
{"match":{"title":"brown"}},
{"match":{"title":"dog"}}
]
}
}
}
// 备注:should语句,一个文档不必包含“brown”或“dog”这两个词项,但如果一旦包含,它的相关性会提高。
// 控制精度(minimum_should_match)
GET /my_index/my_type/_search
{
"query":{
"bool":{
"should":[
{"match":{"title":"brown"}},
{"match":{"title":"fox"}},
{"match":{"title":"dog"}}
],
"minimum_should_match": 2
}
}
}
3,查询语句提升权重
// boost 控制查询语句的相对权重,默认值为1,大于1会提升一个语句的相对权重
GET /_search
{
"query": {
"bool": {
"must": {
"match": {
"content": {
"query": "full text search",
"operator": "and"
}
}
},
"should": [
{ "match": {
"content": {
"query": "Elasticsearch",
"boost": 3
}
}},
{ "match": {
"content": {
"query": "Lucene",
"boost": 2
}
}}
]
}
}
}
4,控制分析
// 1,新增字段,并配置分析器
PUT /my_index/_mapping/my_type
{
"my_type": {
"properties": {
"english_title": {
"type": "text",
"analyzer": "english"
}
}
}
}
// 2,validate-query API 分析查询过程
GET /my_index/my_type/_validate/query?explain
{
"query":{
"bool":{
"should":[
{"match":{"title":"Foxes"}},
{"match":{"english_title": "Foxes"}}
]
}
}
}
参考资料:
-FORBIDDEN/12/index read-only / allow delete (api)
原文地址:https://www.cnblogs.com/linkworld/p/12030686.html
时间: 2024-10-10 10:44:20