ElasticSearch入门第一章
注:本文仅针对ElasticSearch权威指南(中文版)中出现的简写命令进行curl的示例复原.仅供作为学习笔记使用.
ES权威指南中文版
链接地址:
http://es.xiaoleilu.com/010_Intro/25_Tutorial_Indexing.html
http://es.xiaoleilu.com/010_Intro/30_Tutorial_Search.html
1.简单的ES搜索请求
#查询索引数量
curl -XGET '192.168.4.3:9201/_count?pretty' -d '
{
"query": {
"match_all": {}
}
}'
#插入数据
curl -XPUT '127.0.0.1:9201/megacorp/employee/1' -d '
{
"first_name" : "John",
"last_name" : "Smith",
"age" : 25,
"about" : "I love to go rock climbing",
"interests": [ "sports", "music" ]
}'
curl -XPUT '127.0.0.1:9201/megacorp/employee/2' -d '
{
"first_name" : "Jane",
"last_name" : "Smith",
"age" : 32,
"about" : "I like to collect rock albums",
"interests": [ "music" ]
}'
curl -XPUT '127.0.0.1:9201/megacorp/employee/3' -d '
{
"first_name" : "Douglas",
"last_name" : "Fir",
"age" : 35,
"about": "I like to build cabinets",
"interests": [ "forestry" ]
}'
curl -XPUT '127.0.0.1:9201/megacorp/employee/4' -d '
{
"first_name" : "Douglas",
"last_name" : "Fir2",
"age" : 35,
"about": "I like to build cabinets",
"interests": [ "forestry" ]
}'
curl -XPUT '127.0.0.1:9201/megacorp/employee/5' -d '
{
"first_name" : "Douglas",
"last_name" : "Fir Smith",
"age" : 35,
"about": "I like to build cabinets",
"interests": [ "forestry" ]
}'
#查询数据-检索文档
curl -XGET '127.0.0.1:9201/megacorp/employee/1'
#删除索引
curl -XDELETE '127.0.0.1:9201/megacorp/'
#删除类型
curl -XDELETE '127.0.0.1:9201/megacorp/employee'
#删除文档
curl -XDELETE '127.0.0.1:9201/megacorp/employee/3'
#简单搜索--默认返回前十个数据
curl -XGET '127.0.0.1:9201/megacorp/employee/_search'
#按关键字查询--查询制定字符串,精确匹配 q=${fieldName}:${fieldValue}
curl -XGET '127.0.0.1:9201/megacorp/employee/_search?q=last_name:Smith'
#使用DSL语言进行查询
curl -XGET '127.0.0.1:9201/megacorp/employee/_search' -d '
{
"query" : {
"match" : {
"last_name" : "Smith"
}
}
}'
curl -XGET '127.0.0.1:9201/megacorp/employee/_search' -d '
{
"query" : {
"match" : {
"last_name" : "Fir"
}
}
}'
#使用DSL语言进行查寻并添加区间过滤器过滤结果--首先查找年龄大于30的结果再查找lastname为史密斯的结果
curl -XGET '127.0.0.1:9201/megacorp/employee/_search' -d '
{
"query" : {
"filtered" : {
"filter" : {
"range" : {
"age" : { "gt" : 30 }
}
},
"query" : {
"match" : {
"last_name" : "smith"
}
}
}
}
}'
#相关性查询即全文搜索,包含短语或某个词就返回,然后进行打分--根据相关性评分查找并进行排序
curl -XGET '127.0.0.1:9201/megacorp/employee/_search' -d '
{
"query" : {
"match" : {
"about" : "rock climbing"
}
}
}'
#精确匹配即短语搜索--确切的匹配若干个单词或短语
curl -XGET '127.0.0.1:9201/megacorp/employee/_search' -d '
{
"query" : {
"match_phrase" : {
"about" : "rock climbing"
}
}
}'
#高亮结果--结果在上一个查询结果上添加highlight字段包含来自about中的文本,并用<em></em>来标识单词
curl -XGET '127.0.0.1:9201/megacorp/employee/_search' -d '
{
"query" : {
"match_phrase" : {
"about" : "rock climbing"
}
},
"highlight": {
"fields" : {
"about" : {}
}
}
}'
2.简单的聚合请求
#统计所有职员的兴趣爱好 计数
curl -XGET '127.0.0.1:9201/megacorp/employee/_search?pretty' -d '
{
"aggs": {
"all_interests": {
"terms": { "field": "interests" }
}
}
}'
#统计员工名叫Smith的兴趣爱好
curl -XGET '127.0.0.1:9201/megacorp/employee/_search?pretty' -d '
{
"query": {
"match": {
"last_name": "smith"
}
},
"aggs": {
"all_interests": {
"terms": {
"field": "interests"
}
}
}
}'
#统计所有员工的平均年龄
curl -XGET '127.0.0.1:9201/megacorp/employee/_search?pretty' -d '
{
"aggs" : {
"avg_age" : {
"avg" : { "field" : "age" }
}
}
}
}'
#统计每种兴趣下员工的平均年龄--分级聚合
curl -XGET '127.0.0.1:9201/megacorp/employee/_search?pretty' -d '
{
"aggs" : {
"all_interests" : {
"terms" : { "field" : "interests" },
"aggs" : {
"avg_age" : {
"avg" : { "field" : "age" }
}
}
}
}
}'
#按first_name统计聚合结果
curl -XGET '127.0.0.1:9201/megacorp/employee/_search?pretty' -d '
{
"aggs": {
"all_interests": {
"terms": {
"field": "first_name"
}
}
}
}'
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