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- Definitions
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- Elasticsearch version 7.10.2
- Elasticsearch version 7.10.1
- Elasticsearch version 7.10.0
- Elasticsearch version 7.9.3
- Elasticsearch version 7.9.2
- Elasticsearch version 7.9.1
- Elasticsearch version 7.9.0
- Elasticsearch version 7.8.1
- Elasticsearch version 7.8.0
- Elasticsearch version 7.7.1
- Elasticsearch version 7.7.0
- Elasticsearch version 7.6.2
- Elasticsearch version 7.6.1
- Elasticsearch version 7.6.0
- Elasticsearch version 7.5.2
- Elasticsearch version 7.5.1
- Elasticsearch version 7.5.0
- Elasticsearch version 7.4.2
- Elasticsearch version 7.4.1
- Elasticsearch version 7.4.0
- Elasticsearch version 7.3.2
- Elasticsearch version 7.3.1
- Elasticsearch version 7.3.0
- Elasticsearch version 7.2.1
- Elasticsearch version 7.2.0
- Elasticsearch version 7.1.1
- Elasticsearch version 7.1.0
- Elasticsearch version 7.0.0
- Elasticsearch version 7.0.0-rc2
- Elasticsearch version 7.0.0-rc1
- Elasticsearch version 7.0.0-beta1
- Elasticsearch version 7.0.0-alpha2
- Elasticsearch version 7.0.0-alpha1
- Dependencies and versions
Validate API
editValidate API
editValidates a potentially expensive query without executing it.
GET my-index-000001/_validate/query?q=user.id:kimchy
Request
editGET /<target>/_validate/<query>
Prerequisites
edit-
If the Elasticsearch security features are enabled, you must have the
read
index privilege for the target data stream, index, or index alias.
Description
editThe validate API allows you to validate a potentially expensive query without executing it. The query can be sent either as a path parameter or in the request body.
Path parameters
edit-
<target>
-
(Optional, string) Comma-separated list of data streams, indices, and index aliases to search. Wildcard (
*
) expressions are supported.To search all data streams or indices in a cluster, omit this parameter or use
_all
or*
. -
query
- (Optional, query object) Defines the search definition using the Query DSL.
Query parameters
edit-
all_shards
-
(Optional, Boolean) If
true
, the validation is executed on all shards instead of one random shard per index. Defaults tofalse
. -
allow_no_indices
-
(Optional, Boolean) If
false
, the request returns an error if any wildcard expression, index alias, or_all
value targets only missing or closed indices. This behavior applies even if the request targets other open indices. For example, a request targetingfoo*,bar*
returns an error if an index starts withfoo
but no index starts withbar
.Defaults to
false
. -
analyzer
-
(Optional, string) Analyzer to use for the query string.
This parameter can only be used when the
q
query string parameter is specified. -
analyze_wildcard
-
(Optional, Boolean) If
true
, wildcard and prefix queries are analyzed. Defaults tofalse
.This parameter can only be used when the
q
query string parameter is specified. -
default_operator
-
(Optional, string) The default operator for query string query: AND or OR. Defaults to
OR
.This parameter can only be used when the
q
query string parameter is specified. -
df
-
(Optional, string) Field to use as default where no field prefix is given in the query string.
This parameter can only be used when the
q
query string parameter is specified. -
expand_wildcards
-
(Optional, string) Controls what kind of indices that wildcard expressions can expand to. Multiple values are accepted when separated by a comma, as in
open,hidden
. Valid values are:-
all
- Expand to open and closed indices, including hidden indices.
-
open
- Expand only to open indices.
-
closed
- Expand only to closed indices.
-
hidden
-
Expansion of wildcards will include hidden indices.
Must be combined with
open
,closed
, or both. -
none
- Wildcard expressions are not accepted.
-
-
explain
-
(Optional, Boolean) If
true
, the response returns detailed information if an error has occurred. Defaults tofalse
. -
ignore_unavailable
-
(Optional, Boolean) If
false
, the request returns an error if it targets a missing or closed index. Defaults tofalse
. -
lenient
-
(Optional, Boolean) If
true
, format-based query failures (such as providing text to a numeric field) in the query string will be ignored. Defaults tofalse
.This parameter can only be used when the
q
query string parameter is specified. -
rewrite
-
(Optional, Boolean) If
true
, returns a more detailed explanation showing the actual Lucene query that will be executed. Defaults tofalse
. -
q
- (Optional, string) Query in the Lucene query string syntax.
Examples
editPUT my-index-000001/_bulk?refresh {"index":{"_id":1}} {"user" : { "id": "kimchy" }, "@timestamp" : "2099-11-15T14:12:12", "message" : "trying out Elasticsearch"} {"index":{"_id":2}} {"user" : { "id": "kimchi" }, "@timestamp" : "2099-11-15T14:12:13", "message" : "My user ID is similar to kimchy!"}
When sent a valid query:
GET my-index-000001/_validate/query?q=user.id:kimchy
The response contains valid:true
:
{"valid":true,"_shards":{"total":1,"successful":1,"failed":0}}
The query may also be sent in the request body:
GET my-index-000001/_validate/query { "query" : { "bool" : { "must" : { "query_string" : { "query" : "*:*" } }, "filter" : { "term" : { "user.id" : "kimchy" } } } } }
The query being sent in the body must be nested in a query
key, same as
the search api works
If the query is invalid, valid
will be false
. Here the query is invalid
because Elasticsearch knows the post_date
field should be a date due to dynamic
mapping, and foo does not correctly parse into a date:
GET my-index-000001/_validate/query { "query": { "query_string": { "query": "@timestamp:foo", "lenient": false } } }
{"valid":false,"_shards":{"total":1,"successful":1,"failed":0}}
The explain parameter
editAn explain
parameter can be specified to get more detailed information about
why a query failed:
GET my-index-000001/_validate/query?explain=true { "query": { "query_string": { "query": "@timestamp:foo", "lenient": false } } }
The API returns the following response:
{ "valid" : false, "_shards" : { "total" : 1, "successful" : 1, "failed" : 0 }, "explanations" : [ { "index" : "my-index-000001", "valid" : false, "error" : "my-index-000001/IAEc2nIXSSunQA_suI0MLw] QueryShardException[failed to create query:...failed to parse date field [foo]" } ] }
The rewrite parameter
editWhen the query is valid, the explanation defaults to the string representation
of that query. With rewrite
set to true
, the explanation is more detailed
showing the actual Lucene query that will be executed.
GET my-index-000001/_validate/query?rewrite=true { "query": { "more_like_this": { "like": { "_id": "2" }, "boost_terms": 1 } } }
The API returns the following response:
{ "valid": true, "_shards": { "total": 1, "successful": 1, "failed": 0 }, "explanations": [ { "index": "my-index-000001", "valid": true, "explanation": "((user:terminator^3.71334 plot:future^2.763601 plot:human^2.8415773 plot:sarah^3.4193945 plot:kyle^3.8244398 plot:cyborg^3.9177752 plot:connor^4.040236 plot:reese^4.7133346 ... )~6) -ConstantScore(_id:2)) #(ConstantScore(_type:_doc))^0.0" } ] }
Rewrite and all_shards parameters
editBy default, the request is executed on a single shard only, which is randomly
selected. The detailed explanation of the query may depend on which shard is
being hit, and therefore may vary from one request to another. So, in case of
query rewrite the all_shards
parameter should be used to get response from
all available shards.
GET my-index-000001/_validate/query?rewrite=true&all_shards=true { "query": { "match": { "user.id": { "query": "kimchy", "fuzziness": "auto" } } } }
The API returns the following response:
{ "valid": true, "_shards": { "total": 1, "successful": 1, "failed": 0 }, "explanations": [ { "index": "my-index-000001", "shard": 0, "valid": true, "explanation": "(user.id:kimchi)^0.8333333 user.id:kimchy" } ] }
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