本篇文章为大家展示了ElasticSearch中group by + avg + sort等聚合分析是什么样的，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。
将文本fields的Fielddata属性设置true
计算
安全
数据库
网络和加速
企业服务
PUT http://{{es-host}}/ecommerce/_mapping/produce
{
"properties":{
"tags":{
"type":"text",
"fielddata":true
}
}
}GET http://{{es-host}}/ecommerce/produce/_search
{
"size":0,
"aggs":{
"group_by_tags":{
"terms":{
"field":"tags"
}
}
}
}group_by_tags 代表聚合分组名称，可以随意写，表述清楚含义即可；
field的值对应要聚合的字段
结果：
{
"took": 43,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 4,
"max_score": 0,
"hits": []
},
"aggregations": {
"group_by_tags": {
"doc_count_error_upper_bound": 0,
"sum_other_doc_count": 0,
"buckets": [
{
"key": "fangzhu",
"doc_count": 2
},
{
"key": "meibai",
"doc_count": 2
},
{
"key": "qingxin",
"doc_count": 1
}
]
}
}
}GET http://{{es-host}}/ecommerce/produce/_search
{
"query":{
"match_phrase":{
"name":"yagao"
}
},
"aggs":{
"group_by_tags":{
"terms":{
"field":"tags"
}
}
},
"size":0
}检索结果：
{
"took": 17,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 4,
"max_score": 0,
"hits": []
},
"aggregations": {
"group_by_tags": {
"doc_count_error_upper_bound": 0,
"sum_other_doc_count": 0,
"buckets": [
{
"key": "fangzhu",
"doc_count": 2
},
{
"key": "meibai",
"doc_count": 2
},
{
"key": "qingxin",
"doc_count": 1
}
]
}
}
}GET http://{{es-host}}/ecommerce/produce/_search
{
"size":0,
"aggs":{
"group_by_tags":{
"terms":{
"field":"tags"
},
"aggs":{
"avg_price":{
"avg":{
"field":"price"
}
}
}
}
}
}结果：
{
"took": 83,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"skipped": 0,
"failed": 0
},
"hits": {
"total": 4,
"max_score": 0,
"hits": []
},
"aggregations": {
"group_by_tags": {
"doc_count_error_upper_bound": 0,
"sum_other_doc_count": 0,
"buckets": [
{
"key": "fangzhu",
"doc_count": 2,
"avg_price": {
"value": 27.5
}
},
{
"key": "meibai",
"doc_count": 2,
"avg_price": {
"value": 40
}
},
{
"key": "qingxin",
"doc_count": 1,
"avg_price": {
"value": 40
}
}
]
}
}
}上述内容就是ElasticSearch中group by + avg + sort等聚合分析是什么样的，你们学到知识或技能了吗？如果还想学到更多技能或者丰富自己的知识储备，欢迎关注亿速云行业资讯频道。
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原文链接：https://my.oschina.net/shxjinchao/blog/3095291
