Is there a function similar to subquery in elasticsearch? - elasticsearch

Question

I want to act like a subquery in elasticsearch.
Let's look at the example below.
create index
PUT test_index
{
"mappings" : {
"properties" : {
"human" : {
"type" : "nested",
"properties" : {
"age" : {
"type" : "integer"
},
"name" : {
"type" : "text"
}
}
}
}
}
}
insert into index sample data
POST test_index/_doc/1
{
"human": [
{
"name": "adrian",
"age" : 24
},
{
"name": "simon",
"age" : 26
},
{
"name": "michale",
"age" : 24
},
{
"name": "beom",
"age" : 25
},
{
"name": "simon",
"age" : 24
}
]
}
In this situation, i want to get a result if doc satisfied condition that human.name == "adrian" and human.name = "simon"
as follow
{
"took" : 0,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 0.87546873,
"hits" : [
{
"_index" : "test_index",
"_id" : "1",
"_score" : 0.87546873,
"_source" : {
"human" : [
{
"name" : "adrian",
"age" : 24
},
{
"name" : "simon",
"age" : 26
},
{
"name" : "michale",
"age" : 24
},
{
"name" : "beom",
"age" : 25
},
{
"name" : "simon",
"age" : 24
}
]
}
}
]
}
}
but, when i try like this
GET test_index/_search
{
"query": {
"nested": {
"path": "human",
"query": {
"bool": {
"must": [
{
"match": {
"human.name": "simon"
}
},
{
"match": {
"human.name": "adrian"
}
}
]
}
}
}
}
}
then, result is below
{
"took" : 0,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 0,
"relation" : "eq"
},
"max_score" : null,
"hits" : [ ]
}
}
Is there any way to solve this situation??

Answer 1

You need to do it as follows with two nested queries as each nested document is a document of its own. So you're looking for a top-level document that has two nested documents that must match each human.name:
GET test_index/_search
{
"query": {
"bool": {
"must": [
{
"nested": {
"path": "human",
"query": {
"match": {
"human.name": "simon"
}
}
}
},
{
"nested": {
"path": "human",
"query": {
"match": {
"human.name": "adrian"
}
}
}
}
]
}
}
}