Following works fine
curl -X GET "localhost:9200/_search?pretty" -H 'Content-Type: application/json' -d'
{
"query" : {
"query_string" : {
"query" : "chicag*",
"fields" : ["name"],
"_name":"myqry"
}
}
}
'
How can I create a browser url for this GET request ? I URLEncoded the json and tried -
localhost:9200/_search?data=%7B%0A%20%20%22query%22%20%3A%20%7B%0A%20%20%20%20%22query_string%22%20%3A%20%7B%0A%20%20%20%20%20%20%22query%22%20%3A%20%22chicag%2A%22%2C%0A%20%20%20%20%20%20%22fields%22%20%20%3A%20%5B%22name%22%5D%2C%0A%20%20%20%20%20%20%22_name%22%3A%22Chcagoooo%22%0A%20%20%20%20%7D%0A%20%20%7D
but it did not work
It is definitely possible to send your DSL query as a query string parameter using the source parameter like this:
localhost:9200/_search?pretty&source={"query":{"query_string":{"query":"chicag*","fields":["name"],"_name":"myqry"}}}&source_content_type=application/json
I am using multi-get API _mget. In my case, I am using the following URL to get all the documents in the specified range.
Refer: https://www.elastic.co/guide/en/elasticsearch/reference/7.10/docs-multi-get.html#mget-ids
This example displays documents with id 49 and 50.
http://localhost:9200/my_index/_mget?pretty&source={ "ids" : [49, 50] }&source_content_type=application/json
Im using _msearch api to send multiple queries to elastic.
I only need to know how many hits generates each query.
What I understood, you can use the size parameter by setting it to "0" in order to only get the count. However, I still get results with all the found documents. Here is my query:
{"index":"myindex","type":"things","from":0,,"size":0}
{"query":{"bool":{"must":[{"match_all":{}}],"must_not":[],{"match":
{"firstSearch":true}}]}}}, "size" : 0}
{"index":"myindex","type":"things","from":0,,"size":0}
{"query":{"bool":{"must":[{"match_all":{}}],"must_not":[],{"match":
{"secondSearch":true}}]}}}, "size" : 0}
Im using curl to get the results, this way:
curl -H "Content-Type: application/x-ndjson" -XGET localhost:9200/_msearch?pretty=1 --data-binary "#requests"; echo
Setting size as zero signifies that you are asking Elasticsearch to return all the documents which satisfies the query.
You can let Elasticsearch know that you do not need the documents by sending "_source" as false.
Example:
{
"query": {},
"_source": false,
}
You can use
GET /indexname/type/_count?
{ "query":
{ "match_all": {} }
}
please read more document: https://www.elastic.co/guide/en/elasticsearch/reference/current/search-count.html
If I do a search directly to elasticsearch in a browser, such as:
http://localhost:9200/mydocs/_search?q=Awesome%20Search
What does the search body data actually look like? Is it doing a multi_match and including all fields? I've tried writing a multi_match including all the fields and I get different results from doing it right in the browser.
?q=.... is not a multi_match query, this is URI query and it's using query_string query.
So your search is "translated" to:
{
"query": {
"query_string": {
"query": "Awesome Search"
}
}
}
You need to pass multi_match query as request body like this
curl -XGET 'http://localhost:9200/your_index/_search?pretty=true' -d '{"query":{"multi_match":{"query":"keyword","fields":["field1","field2"]}}}'
Elastic-search has from/size parameter and this size is 10 by default. How to get all the results without pagination?
first get count of results . you can get it by count api. the put n into following method of QueryBuilder.
CountResponse response = client.prepareCount("test")
.setQuery(termQuery("_type", "type1"))
.execute()
.actionGet();
then call
n=response.getCount();
you can use setSize(n).
for non java use like this curl request.
curl -XGET 'http://localhost:9200/twitter/tweet/_count' -d '
{
"query" : {
"term" : { "user" : "kimchy" }
}
}'
more on this can be found on this link.
http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-count.html
I know one can delete all documents from a certain type via deleteByQuery.
Example:
curl -XDELETE 'http://localhost:9200/twitter/tweet/_query' -d '{
"query" : {
"term" : { "user" : "kimchy" }
}
}'
But i have NO term and simply want to delete all documents from that type, no matter what term. What is best practice to achieve this? Empty term does not work.
Link to deleteByQuery
I believe if you combine the delete by query with a match all it should do what you are looking for, something like this (using your example):
curl -XDELETE 'http://localhost:9200/twitter/tweet/_query' -d '{
"query" : {
"match_all" : {}
}
}'
Or you could just delete the type:
curl -XDELETE http://localhost:9200/twitter/tweet
Note: XDELETE is deprecated for later versions of ElasticSearch
The Delete-By-Query plugin has been removed in favor of a new Delete By Query API implementation in core. Read here
curl -XPOST 'localhost:9200/twitter/tweet/_delete_by_query?conflicts=proceed&pretty' -H 'Content-Type: application/json' -d'
{
"query": {
"match_all": {}
}
}'
From ElasticSearch 5.x, delete_by_query API is there by default
POST: http://localhost:9200/index/type/_delete_by_query
{
"query": {
"match_all": {}
}
}
You can delete documents from type with following query:
POST /index/type/_delete_by_query
{
"query" : {
"match_all" : {}
}
}
I tested this query in Kibana and Elastic 5.5.2
Torsten Engelbrecht's comment in John Petrones answer expanded:
curl -XDELETE 'http://localhost:9200/twitter/tweet/_query' -d
'{
"query":
{
"match_all": {}
}
}'
(I did not want to edit John's reply, since it got upvotes and is set as answer, and I might have introduced an error)
Starting from Elasticsearch 2.x delete is not anymore allowed, since documents remain in the index causing index corruption.
Since ElasticSearch 7.x, delete-by-query plugin was removed in favor of new Delete By Query API.
The curl option:
curl -X POST "localhost:9200/my-index/_delete_by_query" -H 'Content-Type: application/json' -d' { "query": { "match_all":{} } } '
Or in Kibana
POST /my-index/_delete_by_query
{
"query": {
"match_all":{}
}
}
The above answers no longer work with ES 6.2.2 because of Strict Content-Type Checking for Elasticsearch REST Requests. The curl command which I ended up using is this:
curl -H'Content-Type: application/json' -XPOST 'localhost:9200/yourindex/_doc/_delete_by_query?conflicts=proceed' -d' { "query": { "match_all": {} }}'
In Kibana Console:
POST calls-xin-test-2/_delete_by_query
{
"query": {
"match_all": {}
}
}
(Reputation not high enough to comment)
The second part of John Petrone's answer works - no query needed. It will delete the type and all documents contained in that type, but that can just be re-created whenever you index a new document to that type.
Just to clarify:
$ curl -XDELETE 'http://localhost:9200/twitter/tweet'
Note: this does delete the mapping! But as mentioned before, it can be easily re-mapped by creating a new document.
Note for ES2+
Starting with ES 1.5.3 the delete-by-query API is deprecated, and is completely removed since ES 2.0
Instead of the API, the Delete By Query is now a plugin.
In order to use the Delete By Query plugin you must install the plugin on all nodes of the cluster:
sudo bin/plugin install delete-by-query
All of the nodes must be restarted after the installation.
The usage of the plugin is the same as the old API. You don't need to change anything in your queries - this plugin will just make them work.
*For complete information regarding WHY the API was removed you can read more here.
You have these alternatives:
1) Delete a whole index:
curl -XDELETE 'http://localhost:9200/indexName'
example:
curl -XDELETE 'http://localhost:9200/mentorz'
For more details you can find here -https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-delete-index.html
2) Delete by Query to those that match:
curl -XDELETE 'http://localhost:9200/mentorz/users/_query' -d
'{
"query":
{
"match_all": {}
}
}'
*Here mentorz is an index name and users is a type
I'm using elasticsearch 7.5 and when I use
curl -XPOST 'localhost:9200/materials/_delete_by_query?conflicts=proceed&pretty' -d'
{
"query": {
"match_all": {}
}
}'
which will throw below error.
{
"error" : "Content-Type header [application/x-www-form-urlencoded] is not supported",
"status" : 406
}
I also need to add extra -H 'Content-Type: application/json' header in the request to make it works.
curl -XPOST 'localhost:9200/materials/_delete_by_query?conflicts=proceed&pretty' -H 'Content-Type: application/json' -d'
{
"query": {
"match_all": {}
}
}'
{
"took" : 465,
"timed_out" : false,
"total" : 2275,
"deleted" : 2275,
"batches" : 3,
"version_conflicts" : 0,
"noops" : 0,
"retries" : {
"bulk" : 0,
"search" : 0
},
"throttled_millis" : 0,
"requests_per_second" : -1.0,
"throttled_until_millis" : 0,
"failures" : [ ]
}
Just to add couple cents to this.
The "delete_by_query" mentioned at the top is still available as a plugin in elasticsearch 2.x.
Although in the latest upcoming version 5.x it will be replaced by
"delete by query api"
Elasticsearch 2.3 the option
action.destructive_requires_name: true
in elasticsearch.yml do the trip
curl -XDELETE http://localhost:9200/twitter/tweet
For future readers:
in Elasticsearch 7.x there's effectively one type per index - types are hidden
you can delete by query, but if you want remove everything you'll be much better off removing and re-creating the index. That's because deletes are only soft deletes under the hood, until the trigger Lucene segment merges*, which can be expensive if the index is large. Meanwhile, removing an index is almost instant: remove some files on disk and a reference in the cluster state.
* The video/slides are about Solr, but things work exactly the same in Elasticsearch, this is Lucene-level functionality.
If you want to delete document according to a date.
You can use kibana console (v.6.1.2)
POST index_name/_delete_by_query
{
"query" : {
"range" : {
"sendDate" : {
"lte" : "2018-03-06"
}
}
}
}