Elasticsearch 7.7 and I'm using the official php client to interact with the server.
My issue was somewhat solved here: https://discuss.elastic.co/t/need-to-return-part-of-a-doc-from-a-search-query-filter-is-parent-child-the-way-to-go/64514/2
However "Types are deprecated in APIs in 7.0+" https://www.elastic.co/guide/en/elasticsearch/reference/7.x/removal-of-types.html
Here is my document:
{
"offering_id": "1190",
"account_id": "362353",
"service_id": "20087",
"title": "Quick Brown Mammal",
"slug": "Quick Brown Fox",
"summary": "Quick Brown Fox"
"header_thumb_path": "uploads/test/test.png",
"duration": "30",
"alter_ids": [
"59151",
"58796",
"58613",
"54286",
"51812",
"50052",
"48387",
"37927",
"36685",
"36554",
"28807",
"23154",
"22356",
"21480",
"220",
"1201",
"1192"
],
"premium": "f",
"featured": "f",
"events": [
{
"event_id": "9999",
"start_date": "2020-07-01 14:00:00",
"registration_count": "22",
"description": "boo"
},
{
"event_id": "9999",
"start_date": "2020-07-01 14:00:00",
"registration_count": "22",
"description": "xyz"
},
{
"event_id": "9999",
"start_date": "2020-08-11 11:30:00",
"registration_count": "41",
"description": "test"
}
]
}
Notice how the object may have one or many "events"
Searching based on event data is the most common use case.
For example:
Find events that start before 12pm
Find events with a description of "xyz"
List find events with a start date in the next 10 days.
I would like to NOT return any events that didn't match the query!
So, for example Find events with a description of "xyz" for a given service
{
"query": {
"bool": {
"must": {
"match": {
"events.description": "xyz"
}
},
"filter": {
"bool": {
"must": [
{
"term": {
"service_id": 20087
}
}
]
}
}
}
}
}
I would want the result to look like this:
{
"offering_id": "1190",
"account_id": "362353",
"service_id": "20087",
"title": "Quick Brown Mammal",
"slug": "Quick Brown Fox",
"summary": "Quick Brown Fox"
"header_thumb_path": "uploads/test/test.png",
"duration": "30",
"alter_ids": [
"59151",
"58796",
"58613",
"54286",
"51812",
"50052",
"48387",
"37927",
"36685",
"36554",
"28807",
"23154",
"22356",
"21480",
"220",
"1201",
"1192"
],
"premium": "f",
"featured": "f",
"events": [
{
"event_id": "9999",
"start_date": "2020-07-01 14:00:00",
"registration_count": "22",
"description": "xyz"
}
]
}
However, instead it just returns the ENTIRE document, with all events.
Is it even possible to return only a subset of the data? Maybe with Aggregations?
Right now, we're doing an "extra" set of filtering on the result set in the application (php in this case) to strip out event blocks that don't match the desired results.
It would be nice to just have elastic give directly what's needed instead of doing extra processing on the result to pull out the applicable event.
Thought about restructuring the data to instead have it based around "events" but then I would be duplicating data since every offering will have the parent data too.
This used to be in SQL, where there was a relation instead of having the data nested like this.
A subset of the nested data can be returned using Nested Aggregations along with Filter Aggregations
To know more about these aggregations refer these official documentation :
Filter Aggregation
Nested Aggregation
Index Mapping:
{
"mappings": {
"properties": {
"offering_id": {
"type": "integer"
},
"account_id": {
"type": "integer"
},
"service_id": {
"type": "integer"
},
"title": {
"type": "text"
},
"slug": {
"type": "text"
},
"summary": {
"type": "text"
},
"header_thumb_path": {
"type": "keyword"
},
"duration": {
"type": "integer"
},
"alter_ids": {
"type": "integer"
},
"premium": {
"type": "text"
},
"featured": {
"type": "text"
},
"events": {
"type": "nested",
"properties": {
"event_id": {
"type": "integer"
},
"registration_count": {
"type": "integer"
},
"description": {
"type": "text"
}
}
}
}
}
}
Search Query :
{
"size": 0,
"aggs": {
"nested": {
"nested": {
"path": "events"
},
"aggs": {
"filter": {
"filter": {
"match": { "events.description": "xyz" }
},
"aggs": {
"total": {
"top_hits": {
"size": 10
}
}
}
}
}
}
}
}
Search Result :
"hits": [
{
"_index": "foo21",
"_type": "_doc",
"_id": "1",
"_nested": {
"field": "events",
"offset": 1
},
"_score": 1.0,
"_source": {
"event_id": "9999",
"start_date": "2020-07-01 14:00:00",
"registration_count": "22",
"description": "xyz"
}
}
]
Second Method :
{
"query": {
"bool": {
"must": [
{
"match": {
"service_id": "20087"
}
},
{
"nested": {
"path": "events",
"query": {
"bool": {
"must": [
{
"match": {
"events.description": "xyz"
}
}
]
}
},
"inner_hits": {
}
}
}
]
}
}
}
You can even go through this SO answer:
How to filter nested aggregation bucket?
Returning a partial nested document in ElasticSearch
Related
i am new to elastic search Query and aggregation.
I have a nested document with the following mapping
PUT /company
{
"mappings": {
`"data": {
"properties": {
"deptId": {
"type": "keyword"
},
"deptName": {
"type": "keyword"
},
"employee": {
"type": "nested",
"properties": {
"empId": {
"type": "keyword"
},
"empName": {
"type": "text"
},
"salary": {
"type": "float"
}
}}}}}}
I have inserted Sample Data as follows
PUT company/data/1
{
"deptId":"1",
"deptName":"HR",
"employee": [
{
"empId": "1",
"empName": "John",
"salary":"1000"
},
{
"empId": "2",
"empName": "Will",
"salary":"2000"
}
]}
PUT company/data/3
{
"deptId":"3",
"deptName":"FINANCE",
"employee": [
{
"empId": "1",
"empName": "John",
"salary":"1000"
},
{
"empId": "2",
"empName": "Will",
"salary":"2000"
},
{
"empId": "3",
"empName": "Mark",
"salary":"4000"
}]
}
How can i Construct a Query DSL for the following
Department with the maximum Employees
Employee that is present in most departments
I am using Elastic Search 6.2.4
Your First Questions answer is in this link nested inner doc count Which Stats
POST test/_search
{
"query": {
"nested": {
"path": "employee",
"inner_hits": {}
}
}
}
This Answers your Second Question there is also reading the link attached.
GET /my_index/blogpost/_search
{
"size" : 0,
"aggs": {
"employee": {
"nested": {
"path": "employee"
},
"aggs": {
"by_name": {
"terms": {
"field": "employee.empName"
}
}
}
}
}
}
Read Nested Agg
I hope this gives you what you need.
We have a simple index of entities with mapping:
PUT resource/_mapping/entity
{
"properties": {
"id": {
"type": "keyword"
},
"name": {
"type": "keyword"
},
"claims": {
"type": "nested",
"properties": {
"claimid": {
"type": "keyword"
},
"priority": {
"type": "short"
},
"visibility": {
"type": "keyword"
}
}
}
}
}
Here's a sample document in the index:
POST resource/entity/
{
"id": "2",
"name": "e2",
"claims": [
{
"claimid": "c1",
"priority": "2",
"visibility": "M",
"reqid" : "2"
},
{
"claimid": "c2",
"priority": "1",
"visibility": "V",
"reqid" : "2"
},
{
"claimid": "c5",
"priority": "3",
"visibility": "H",
"reqid" : "2"
}
]
}
And a query to filter documents by provided set of 'claims.claimid', then to sort by 'claims.priority', select the one with highest priority and return only the 'claims.visibility' e.g.:
GET resource/entity/_search/
{
"query": {
"nested": {
"path": "claims",
"query": {
"bool": {
"must": [
{
"terms": {
"claims.claimid": [
"c1",
"c4",
"c5"
]
}
}
]
}
},
"inner_hits": {
"sort": [
{
"claims.priority": "asc"
}
],
"size":1,
"_source":{"includes":["claims.visibility"]}
}
}
}
}
And finally the problem to be solved: how to modify the query to filter out documents having resulted in "H" for visibility with highest priority in inner hits? Or what other query will return a set of documents with visibility of highest priority filtered by provided claim ids, but only those where visibility is not "H"?
A catch here is that we have to sort the documents having all types of visibilities and filter out those with resulting "H" on a complete list of results.
I have the following Json that describes a country-city (1:n) relation
{
"country": [
{
"id": 1,
"name": "Country1",
"city": [
{"id": 1, "name": "City1"},
{"id": 2,"name": "City2"}
]
}, {
"id": 2,
"name": "Country2",
"city": [
{"id": 3,"name": "City3"},
{"id": 4,"name": "City4"}
]
}, {
"id": 3,
"name": "Country3",
"city": [
{"id": 5,"name": "City5"},
{"id": 6,"name": "City6"}
]
}
]
}
I have loaded it into an ES map with 3 documents of the three countries.
I have added nested property in the city index
...
"city": {
"type": "nested",
...
I want to query all cities and get a paged result.
For instance 3 hits will return city1, city2, city3
I want to filter by country name
I tried
GET /127.0.0.1:9200/country_city/_search
{
"from": 0,
"size": 2,
"fields": [
"city.id", "city.name"
]
}
and
GET /127.0.0.1:9200/country_city/country/_search?_source=false
{
"query": {
"nested": {
"path": "city",
"query": {
"match_all": {}
},
"inner_hits": {
"sort": "city.id",
"from": 0,
"size": 3
}
}
},
"fields": [
"name",
"city.id",
"city.name"
]
}
But the first returned two 4 cities instead of 2.
(2 countries have 2 cities each)
The second returned all documents(although size is 2 in the request) and in an inner element returned the first 3 cities of each country.
How Can I get a page size of the nested object?
And then progress to the next page?
This should work
Mappings
{
"mappings": {
"type": {
"properties": {
"country": {
"type": "nested",
"properties": {
"id": {
"type": "integer"
},
"name": {
"type": "text"
},
"city": {
"type": "nested",
"properties": {
"id": {
"type": "integer"
},
"name": {
"type": "keyword"
}
}
}
}
}
}
}
}
}
Query
{
"query": {
"nested": {
"path": "country",
"inner_hits": {},
"query": {
"nested": {
"path": "country.city",
"query": {
"match_all": {}
},
"inner_hits": {
"from": 0,
"size": 1,
"_source": {
"includes": ["country.city.name", "country.city.id"]
}
}
}
}
}
}
}
github bug
source filtering
Thanks
I have a problem.
I have tried to make plenty of queries and none have returned any documents.
My data format is something like:
{
"_index": "orders",
"_type": "order",
"_id": "AVad66hjiOD-asNwVILB",
"_score": 1,
"_source": {
"document": {
"orderID": "1337",
"sku": "awesomeSku",
"customerID": "7331",
"productID": "20490859",
"variantID": "97920239",
"createTime": "2016-07-13T13:23:19Z",
"retailPrice": "10000",
"costPrice": "10000",
"new": 123
}
}
}
My query:
{
"query": {
"bool": {
"filter": [
{ "range": { "new": { "gte": "20" } } }
]
}
}
}
I just want to start somewhere simply and find all documents which has the attribute "new" with a value above 20.
Any feedback would be awesome.
Edit:
Data formart in ES:
{
"orders": {
"mappings": {
"order": {
"properties": {
"document": {
"properties": {
"costPrice": {
"type": "string"
},
"createTime": {
"type": "string"
},
"customerID": {
"type": "string"
},
"new": {
"type": "long"
},
"orderID": {
"type": "string"
},
"productID": {
"type": "string"
},
"retailPrice": {
"type": "string"
},
"sku": {
"type": "string"
},
"variantID": {
"type": "string"
}
}
}
}
}
}
}
}
You need to make your query like this on the document.new field since all your fields are nested into the top-level document section:
{
"query": {
"bool": {
"filter": [
{
"range": {
"document.new": {
"gte": 20
}
}
}
]
}
}
}
I'm using the following mapping:
PUT /my_index
{
"mappings": {
"blogpost": {
"properties": {
"title": {"type": "string"}
"comments": {
"type": "nested",
"properties": {
"comment": { "type": "string" },
"date": { "type": "date" }
}
}
}
}
}
}
Example of document:
PUT /my_index/blogpost/1
{
"title": "Nest eggs",
"comments": [
{
"comment": "Great article",
"date": "2014-09-01"
},
{
"comment": "More like this please",
"date": "2014-10-22"
},
{
"comment": "Visit my website",
"date": "2014-07-02"
},
{
"comment": "Awesome",
"date": "2014-08-23"
}
]
}
My question is how to retrieve this document and sort the nested object "comments" by "date"? the result:
PUT /my_index/blogpost/1
{
"title": "Nest eggs",
"comments": [
{
"comment": "Awesome",
"date": "2014-07-23"
},
{
"comment": "Visit my website",
"date": "2014-08-02"
},
{
"comment": "Great article",
"date": "2014-09-01"
},
{
"comment": "More like this please",
"date": "2014-10-22"
}
]
}
You need to sort on the inner_hits to sort the nested objects. This will give you the desired output
GET my_index/_search
{
"query": {
"nested": {
"path": "comments",
"query": {
"match_all": {}
},
"inner_hits": {
"sort": {
"comments.date": {
"order": "asc"
}
},
"size": 5
}
}
},
"_source": [
"title"
]
}
I am using source filtering to get only "title" as comments will be retrieved inside inner_hit but you can avoid that if you want
size is 5 because default value is 3 and we have 4 objects in the given example.
Hope this helps!