how to get only particular elements from an array in elastic search - elasticsearch

Question

I'm very new to elastic search. I'm trying to get some particular elements from an array...
I created my index like below
PUT store
{
"mappings": {
"properties": {
"storeList": {"type": "nested"},
"storeLocation": {"type": "text"},
"storePinCode" : {"type": "long"}
}
}
}
and I'm having data like this
{
"storeLocation": "tirupati",
"storePinCode" : 517501
"storeList" : [
{
"storeName" : "apollo",
"storeType" : "med"
},
{
"storeName" : "carrots",
"storeType" : "restaurants"
},
{
"storeName" : "more",
"storeType" : "supermarket"
}
]
},
{
"storeLocation": "hyderabad",
"storePinCode" : 500038
"storeList" : [
{
"storeName" : "apollo",
"storeType" : "med"
},
{
"storeName" : "bahar cafe",
"storeType" : "restaurants"
},
{
"storeName" : "dmart",
"storeType" : "supermarket"
}
]
}
My excepted output should be like below
{
"took" : 2,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 2,
"relation" : "eq"
},
"max_score" : 1.0,
"hits" : [
{
"_index" : "store",
"_type" : "_doc",
"_id" : "Yk8SFWwB2zt5weEsMHn7",
"_score" : 1.0,
"_source" : {
"storeLocation" : "tirupati",
"storePinCode" : 517501,
"storeList" : [
{
"storeName" : "apollo",
"storeType" : "med"
}
]
}
},
{
"_index" : "store",
"_type" : "_doc",
"_id" : "ZE8SFWwB2zt5weEsqnkd",
"_score" : 1.0,
"_source" : {
"storeLocation" : "hyderabad",
"storePinCode" : 500038,
"storeList" : [
{
"storeName" : "apollo",
"storeType" : "med"
}
]
}
}
]
}
}
To achive that i try with below query
POST store/_search
{
"query": {
"nested": {
"path": "storeList",
"query": {
"bool" : {
"must" : [
{"match":{"storeList.storeName": "apollo"}}
]
}
},
"inner_hits": {}
}
}
}
I'm getting the output but it not exactly what I expect. Is it possible to get the output as I expect..?
Actual Output:
{
"took" : 4,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 2,
"relation" : "eq"
},
"max_score" : 1.093527,
"hits" : [
{
"_index" : "store",
"_type" : "_doc",
"_id" : "Yk8SFWwB2zt5weEsMHn7",
"_score" : 1.093527,
"_source" : {
"storeLocation" : "tirupati",
"storePinCode" : 517501,
"storeList" : [
{
"storeName" : "apollo",
"storeType" : "med"
},
{
"storeName" : "carrots",
"storeType" : "restaurants"
},
{
"storeName" : "more",
"storeType" : "supermarket"
}
]
},
"inner_hits" : {
"storeList" : {
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 1.093527,
"hits" : [
{
"_index" : "store",
"_type" : "_doc",
"_id" : "Yk8SFWwB2zt5weEsMHn7",
"_nested" : {
"field" : "storeList",
"offset" : 0
},
"_score" : 1.093527,
"_source" : {
"storeName" : "apollo",
"storeType" : "med"
}
}
]
}
}
}
},
{
"_index" : "store",
"_type" : "_doc",
"_id" : "ZE8SFWwB2zt5weEsqnkd",
"_score" : 1.093527,
"_source" : {
"storeLocation" : "hyderabad",
"storePinCode" : 500038,
"storeList" : [
{
"storeName" : "apollo",
"storeType" : "med"
},
{
"storeName" : "bahar cafe",
"storeType" : "restaurants"
},
{
"storeName" : "dmart",
"storeType" : "supermarket"
}
]
},
"inner_hits" : {
"storeList" : {
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 1.093527,
"hits" : [
{
"_index" : "store",
"_type" : "_doc",
"_id" : "ZE8SFWwB2zt5weEsqnkd",
"_nested" : {
"field" : "storeList",
"offset" : 0
},
"_score" : 1.093527,
"_source" : {
"storeName" : "apollo",
"storeType" : "med"
}
}
]
}
}
}
}
]
}
}
could you please help me out of this...
#ajay sharma, as you suggested i change my query like this
GET store/_search
{
"_source": {
"includes": [ "*" ],
"excludes": [ "storeList" ]
},
"query": {
"nested": {
"path": "storeList",
"inner_hits": {
"_source": [
"storeName", "storeType"
]
},
"query": {
"bool": {
"must": [
{"match":{"storeList.storeName": "more"}}
]
}
}
}
}
}
but im getting the response like below...
{
"_index" : "store",
"_type" : "_doc",
"_id" : "Yk8SFWwB2zt5weEsMHn7",
"_score" : 1.0946013,
"_source" : {
"storeLocation" : "tirupati",
"storePinCode" : 517501
},
"inner_hits" : {
"storeList" : {
"hits" : {
"total" : {
"value" : 1,
"relation" : "eq"
},
"max_score" : 1.0946013,
"hits" : [
{
"_index" : "store",
"_type" : "_doc",
"_id" : "Yk8SFWwB2zt5weEsMHn7",
"_nested" : {
"field" : "storeList",
"offset" : 2
},
"_score" : 1.0946013,
"_source" : { }
}
]
}
}
}
}

Answer 1

I cannot respond to your comment by a comment. Therefore sharing as an answer.
I have updated the query below. Please check. I replicated your index on my local machine and could get the desired result.
Query
{
"_source": {
"includes": [ "*" ],
"excludes": [ "storeList" ]
},
"query": {
"nested": {
"path": "storeList",
"inner_hits": {
"_source": [
"storeList.storeName", "storeList.storeType" <-- changes are here -->
]
},
"query": {
"bool": {
"must": [
{"match":{"storeList.storeName": "more"}}
]
}
}
}
}
}
Output
"hits": {
"total": 1,
"max_score": 0.9808292,
"hits": [
{
"_index": "store",
"_type": "store",
"_id": "2",
"_score": 0.9808292,
"_source": {
"storeLocation": "tirupati",
"storePinCode": 517501
},
"inner_hits": {
"storeList": {
"hits": {
"total": 1,
"max_score": 0.9808292,
"hits": [
{
"_nested": {
"field": "storeList",
"offset": 2
},
"_score": 0.9808292,
"_source": {
"storeList": {
"storeType": "supermarket",
"storeName": "more"
}
}
}
]
}
}
}
}
]
}