以官网文档为例，里面有一个user是nested类型，我要统计user下的所有子文档数，需要怎么写呢？求大佬指点~
官网地址：https://www.elastic.co/guide/e ... .html
官网地址：https://www.elastic.co/guide/e ... .html
PUT my_index
{
"mappings": {
"properties": {
"user": {
"type": "nested"
}
}
}
}
PUT my_index/_doc/1
{
"group" : "fans",
"user" : [
{
"first" : "John",
"last" : "Smith"
},
{
"first" : "Alice",
"last" : "White"
}
]
}
1 个回复
Garf
赞同来自:
{
"size": 0,
"aggs": {
"nest_user": {
"nested": {
"path": "user"
},
"aggs": {
"user_count": {
"value_count": {
"field": "user.first"
}
}
}
}
}
}