ElasticSearch: Filter by distinct count during aggregation - elasticsearch

The following query returns distinct Ids in order by largest distinct count of Ids. What I would like to do is "include only those IDs for which total number of documents is less than 2000"
{
"size": "0",
"query": {
"range": {
"#timestamp": {
"gte": "2020-10-20T00:00:00",
"lt": "2020-10-21T00:00:00"
}
}
},
"aggs": {
"ids": {
"terms": {
"field": "Id.keyword",
"size": 1000
}
}
}
}
I tried adding filter by 'doc_count' but that didn't help. How do I do this?

You can filter the buckets using bucket_selector aggregation
Bucket Selector Aggregation is a parent pipeline aggregation which executes a script which determines
whether the current bucket will be retained in the parent multi-bucket
aggregation.
{
"size": "0",
"query": {
"range": {
"#timestamp": {
"gte": "2020-10-20T00:00:00",
"lt": "2020-10-21T00:00:00"
}
}
},
"aggs": {
"ids": {
"terms": {
"field": "Id.keyword",
"size": 1000
},
"aggs": {
"count_filter": {
"bucket_selector": {
"buckets_path": {
"values": "_count"
},
"script": "params.values < 2000" <-- note this
}
}
}
}
}
}

Related

How to define percentage of result items with specific field in Elasticsearch query?

I have a search query that returns all items matching users that have type manager or lead.
{
"from": 0,
"size": 20,
"query": {
"bool": {
"should": [
{
"terms": {
"type": ["manager", "lead"]
}
}
]
}
}
}
Is there a way to define what percentage of the results should be of type "manager"?
In other words, I want the results to have 80% of users with type manager and 20% with type lead.
I want to make a suggestion to use bucket_path aggregation. As I know this aggregation needs to be run in sub-aggs of a histogram aggregation. As you have such field in your mapping so I think this query should work for you:
{
"size": 0,
"aggs": {
"NAME": {
"date_histogram": {
"field": "my_datetime",
"interval": "month"
},
"aggs": {
"role_type": {
"terms": {
"field": "type",
"size": 10
},
"aggs": {
"count": {
"value_count": {
"field": "_id"
}
}
}
},
"role_1_ratio": {
"bucket_script": {
"buckets_path": {
"role_1": "role_type['manager']>count",
"role_2": "role_type['lead']>count"
},
"script": "params.role_1 / (params.role_1+params.role_2)*100"
}
},
"role_2_ratio": {
"bucket_script": {
"buckets_path": {
"role_1": "role_type['manager']>count",
"role_2": "role_type['lead']>count"
},
"script": "params.role_2 / (params.role_1+params.role_2)*100"
}
}
}
}
}
}
Please let me know if it didn't work well for you.

Elasticsearch Pagination with timestamp range

Elasticsearch official documentation introduce that elasticsearch can realize pagination by composite aggregations.
The composite aggregation will fetch data many times to get all results.
So my question is, Can I use range from now-1h to now when I execute composite aggregation?
If I can. How to composite aggregation query keep source data unchanging when every range query have different now.
If I can't. My query below has no error and the result seems to be right.
{
"size": 0,
"query": {
"bool": {
"filter": [
{
"range": {
"timestamp": {
"gte": "now-1h"
}
}
}
]
}
},
"aggs": {
"user_device": {
"composite": {
"after": {
"user_name": "alen.lv"
},
"size": 100,
"sources": [
{
"user_name": {
"terms": {
"field": "user_name"
}
}
}
]
},
"aggs": {
"user_mac": {
"terms": {
"field": "user_mac",
"size": 1000
}
}
}
}
}
}

How to diversify the result of top-hits aggregation?

Let's start with a concrete example. I have a document with these fields:
{
"template": {
"mappings": {
"template": {
"properties": {
"tid": {
"type": "long"
},
"folder_id": {
"type": "long"
},
"status": {
"type": "integer"
},
"major_num": {
"type": "integer"
}
}
}
}
}
}
I want to aggregate the query result by field folder_id, and for each group divided by folder_id, retrieve the top-N documents' _source detail. So i write query DSL like:
GET /template/template/_search
{
"size": 0,
"query": {
"bool": {
"filter": [
{
"term": {
"status": 1
}
}
]
}
},
"aggs": {
"folder": {
"terms": {
"field": "folder_id",
"size": 10
},
"aggs": {
"top_hit":{
"top_hits": {
"size": 5,
"_source": ["major_num"]
}
}
}
}
}
}
However, now comes a requirement that the top hits documents for each folder_id must be diversified on the field major_num. For each folder_id, the top hits documents retrieve by the sub top_hits aggregation under the terms aggregation, must be unique on field major_num, and for each major_num value, return at most 1 document in the sub top hits aggregation result.
top_hits aggregation cannot accept sub-aggregations, so how should i solve the question?
Why not simply adding another terms aggregation on the major_num field ?
GET /template/template/_search
{
"size": 0,
"query": {
"bool": {
"filter": [
{
"term": {
"status": 1
}
}
]
}
},
"aggs": {
"folder": {
"terms": {
"field": "folder_id",
"size": 10
},
"aggs": {
"majornum": {
"terms": {
"field": "major_num",
"size": 10
},
"aggs": {
"top_hit": {
"top_hits": {
"size": 1
}
}
}
}
}
}
}
}

Elasticsearch term aggregation and range with timestamp

I'm trying to count # of logs grouped by user agent.
This is what I have.
GET /myindex/_search
{
"size": 30,
"stored_fields": ["req.headers.user-agent.keyword"],
"aggs": {
"group_by_userAgent": {
"terms": {
"field": "req.headers.user-agent.keyword"
}
}
}
}
I wanted to add "Query last 15 mins" feature. I've tried to add 'range' query and I ended up the following query, which does not work.
GET /myindex/_search
{
"size": 30,
"stored_fields": ["req.headers.user-agent.keyword"],
"aggs": {
"group_by_userAgent": {
"terms": {
"field": "req.headers.user-agent.keyword"
},
"range": {
"timestamp": {
"gt": "now-15m"
}
}
}
}
}
How do I query terms aggregation with range with "now-x15min" syntax?
The range should go inside the query section, not aggs. The time range is good as it is
I think what you're looking for is this, the number of docs in the first 30 user-agent buckets, i.e. the top 30 user agents producing the most logs
GET /myindex/_search
{
"size": 0,
"query": {
"range": {
"#timestamp": {
"gt": "now-15m"
}
}
},
"aggs": {
"group_by_userAgent": {
"terms": {
"field": "req.headers.user-agent.keyword",
"size": 30
}
}
}
}
you can do this in two ways to achieve aggregation results for user-agent.
POST phrase_index/_search
{
"aggs": {
"date_range_filtered_agg": {
"filter": {
"range": {
"timestamp": {
"gte": "now-15m/m"
}
}
},
"aggs": {
"group_by_userAgent": {
"terms": {
"field": "req.headers.user-agent.keyword",
"size": 10
}
}
}
}
},
"size": 30,
"stored_fields": ["req.headers.user-agent.keyword"]
}
POST phrase_index/_search
{
"query": {
"range": {
"timestamp": {
"gte": "now-15m/m"
}
}
},
"aggs": {
"group_by_userAgent": {
"terms": {
"field": "req.headers.user-agent.keyword",
"size": 10
}
}
},
"size": 30,
"stored_fields": ["req.headers.user-agent.keyword"]
}
You need a filter aggregation first to apply the range query, then add a terms sub-aggregation.
See: https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-bucket-filter-aggregation.html

Need aggregation on document inner array object - ElasticSearch

I am trying to do aggregation over the following document
{
"pid": 900000,
"mid": 9000,
"cid": 90,
"bid": 1000,
"gmv": 1000000,
"vol": 200,
"data": [
{
"date": "25-11-2018",
"gmv": 100000,
"vol": 20
},
{
"date": "24-11-2018",
"gmv": 100000,
"vol": 20
},
{
"date": "23-11-2018",
"gmv": 100000,
"vol": 20
}
]
}
The analysis which needs to be done here is:
Filter on mid or/and cid on all documents
Filter range on data.date for last 7 days and sum data.vol over that range for each pid
sort the documents over the sum obtained in previous step in desc order
Group these results by pid.
This means we are trying to get top products by sum of the volume (quantity sold) within a date range for specific cid/mid.
PID here refers product ID,
MID refers here merchant ID,
CID refers here category ID
Firstly you need to change your mapping to run the query on nested fields.
change the type for field 'data' as 'nested'.
Then you can use the range query in filter along with the terms filter on mid/cid to filter on the data. Once you get the correct data set, then you can aggregate on the pid following the sub aggregation on sum of vol.
Here is the below query.
{
"query": {
"bool": {
"filter": [
{
"bool": {
"must": [
{
"range": {
"data.date": {
"gte": "28-11-2018",
"lte": "25-11-2018"
}
}
},
{
"must": [
{
"terms": {
"mid": [
"9000"
]
}
}
]
}
]
}
}
]
}
},
"aggs": {
"AGG_PID": {
"terms": {
"field": "pid",
"size": 0,
"order": {
"TOTAL_SUM": "desc"
},
"min_doc_count": 1
},
"aggs": {
"TOTAL_SUM": {
"sum": {
"field": "data.vol"
}
}
}
}
}
}
You can modify the query accordingly. Hope this will be helpful.
Please find nested aggregation query which sorts by "vol" for each bucket of "pid". You can add any number of filters in the query part.
{
"size": 0,
"query": {
"bool": {
"must": [
{
"term": {
"mid": "2"
}
}
]
}
},
"aggs": {
"top_products_sorted_by_order_volume": {
"terms": {
"field": "pid",
"order": {
"nested_data_object>order_volume_by_range>order_volume_sum": "desc"
}
},
"aggs": {
"nested_data_object": {
"nested": {
"path": "data"
},
"aggs": {
"order_volume_by_range": {
"filter": {
"range": {
"data.date": {
"gte": "2018-11-26",
"lte": "2018-11-27"
}
}
},
"aggs": {
"order_volume_sum": {
"sum": {
"field": "data.ord_vol"
}
}
}
}
}
}
}
}
}
}

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