Search API
editSearch API
editReturns search hits that match the query defined in the request.
GET /my-index-000001/_search
Description
editAllows you to execute a search query and get back search hits that match the
query. You can provide search queries using the q
query string parameter or request body.
Path parameters
edit-
<index>
- (Optional, string) Comma-separated list or wildcard expression of index names used to limit the request.
Query parameters
editSeveral options for this API can be specified using a query parameter or a request body parameter. If both parameters are specified, only the query parameter is used.
-
allow_no_indices
-
(Optional, boolean) If
true
, the request does not return an error if a wildcard expression or_all
value retrieves only missing or closed indices.This parameter also applies to index aliases that point to a missing or closed index.
Defaults to
true
.
-
allow_partial_search_results
-
(Optional, boolean) If
true
, returns partial results if there are request timeouts or shard failures. Iffalse
, returns an error with no partial results. Defaults totrue
.To override the default for this field, set the
search.default_allow_partial_results
cluster setting tofalse
. -
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. -
batched_reduce_size
-
(Optional, integer) The number of shard results that should be reduced at once
on the coordinating node. This value should be used as a protection mechanism
to reduce the memory overhead per search request if the potential number of
shards in the request can be large. Defaults to
512
.
-
ccs_minimize_roundtrips
-
(Optional, boolean) If
true
, network round-trips between the coordinating node and the remote clusters are minimized when executing cross-cluster search (CCS) requests. See How cross-cluster search handles network delays. Defaults totrue
. -
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. -
docvalue_fields
- (Optional, string) A comma-separated list of fields to return as the docvalue representation of a field for each hit.
-
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.
Defaults to
open
. -
-
explain
-
(Optional, boolean) If
true
, returns detailed information about score computation as part of a hit. Defaults tofalse
. -
from
-
(Optional, integer) Starting document offset. Defaults to
0
.By default, you cannot page through more than 10,000 documents using the
from
andsize
parameters. This limit is set using theindex.max_result_window
index setting.Deep paging or requesting many results at once can result in slow searches. Results are sorted before being returned. Because search requests usually span multiple shards, each shard must generate its own sorted results. These separate results must then be combined and sorted to ensure that the overall order is correct.
As an alternative to deep paging, we recommend using scroll or the
search_after
parameter. -
ignore_throttled
-
(Optional, boolean) If
true
, concrete, expanded or aliased indices will be ignored when frozen. Defaults totrue
. -
ignore_unavailable
-
(Optional, boolean) If
true
, missing or closed indices are not included in the response. 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. -
max_concurrent_shard_requests
-
(Optional, integer) Defines the number of concurrent shard requests per node
this search executes concurrently. This value should be used to limit the
impact of the search on the cluster in order to limit the number of concurrent
shard requests. Defaults to
5
. -
pre_filter_shard_size
-
(Optional, integer) Defines a threshold that enforces a pre-filter roundtrip to prefilter search shards based on query rewriting if the number of shards the search request expands to exceeds the threshold. This filter roundtrip can limit the number of shards significantly if for instance a shard can not match any documents based on its rewrite method ie. if date filters are mandatory to match but the shard bounds and the query are disjoint. When unspecified, the pre-filter phase is executed if any of these conditions is met:
-
The request targets more than
128
shards. - The request targets one or more read-only index.
- The primary sort of the query targets an indexed field.
-
The request targets more than
-
preference
- (Optional, string) Specifies the node or shard the operation should be performed on. Random by default.
-
q
-
(Optional, string) Query in the Lucene query string syntax.
You can use the
q
parameter to run a query parameter search. Query parameter searches do not support the full Elasticsearch Query DSL but are handy for testing.The
q
parameter overrides thequery
parameter in the request body. If both parameters are specified, documents matching thequery
request body parameter are not returned. -
request_cache
-
(Optional, boolean) If
true
, the caching of search results is enabled for requests wheresize
is0
. See Shard request cache settings. Defaults to index level settings. -
rest_total_hits_as_int
-
(Optional, boolean) Indicates whether hits.total should be rendered as an
integer or an object in the rest search response. Defaults to
false
. -
routing
- (Optional, string) Target the specified primary shard.
-
scroll
-
(Optional, time value) Period to retain the search context for scrolling. See Scroll search results.
By default, this value cannot exceed
1d
(24 hours). You can change this limit using thesearch.max_keep_alive
cluster-level setting. -
search_type
-
(Optional, string) The type of the search operation. Available options:
-
query_then_fetch
-
dfs_query_then_fetch
-
-
seq_no_primary_term
-
(Optional, boolean) If
true
, returns sequence number and primary term of the last modification of each hit. See Optimistic concurrency control. -
size
-
(Optional, integer) Defines the number of hits to return. Defaults to
10
.By default, you cannot page through more than 10,000 documents using the
from
andsize
parameters. This limit is set using theindex.max_result_window
index setting.Deep paging or requesting many results at once can result in slow searches. Results are sorted before being returned. Because search requests usually span multiple shards, each shard must generate its own sorted results. These separate results must then be combined and sorted to ensure that the overall order is correct.
As an alternative to deep paging, we recommend using scroll or the
search_after
parameter.If the
scroll
parameter is specified, this value cannot be0
. -
sort
- (Optional, string) A comma-separated list of <field>:<direction> pairs.
-
_source
-
(Optional) Indicates which source fields are returned for matching documents. These fields are returned in the
hits._source
property of the search response. Defaults totrue
.Valid values for
_source
-
true
- (boolean) The entire document source is returned.
-
false
- (boolean) The document source is not returned.
-
<string>
-
(string)
Comma-separated list of source fields to return.
Wildcard (
*
) patterns are supported.
-
-
_source_excludes
-
(Optional, string) A comma-separated list of source fields to exclude from the response.
You can also use this parameter to exclude fields from the subset specified in
_source_includes
query parameter.If the
_source
parameter isfalse
, this parameter is ignored. -
_source_includes
-
(Optional, string) A comma-separated list of source fields to include in the response.
If this parameter is specified, only these source fields are returned. You can exclude fields from this subset using the
_source_excludes
query parameter.If the
_source
parameter isfalse
, this parameter is ignored. -
stats
-
(Optional, string) Specific
tag
of the request for logging and statistical purposes. -
stored_fields
-
(Optional, string) A comma-separated list of stored fields to return as part of a hit. If no fields are specified, no stored fields are included in the response.
If this field is specified, the
_source
parameter defaults tofalse
. You can pass_source: true
to return both source fields and stored fields in the search response. -
suggest_field
- (Optional, string) Specifies which field to use for suggestions.
-
suggest_mode
-
(Optional, string) Specifies the suggest mode. Defaults to
missing
. Available options:-
always
-
missing
-
popular
This parameter can only be used when the
suggest_field
andsuggest_text
query string parameters are specified. -
-
suggest_size
-
(Optional, integer) Number of suggestions to return.
This parameter can only be used when the
suggest_field
andsuggest_text
query string parameters are specified. -
suggest_text
-
(Optional, string) The source text for which the suggestions should be returned.
This parameter can only be used when the
suggest_field
query string parameter is specified. -
terminate_after
-
(Optional, integer) The maximum number of documents to collect for each shard, upon reaching which the query execution will terminate early.
Defaults to
0
, which does not terminate query execution early. -
timeout
- (Optional, time units) Specifies the period of time to wait for a response. If no response is received before the timeout expires, the request fails and returns an error. Defaults to no timeout.
-
track_scores
-
(Optional, boolean) If
true
, calculate and return document scores, even if the scores are not used for sorting. Defaults tofalse
. -
track_total_hits
-
(Optional, integer or boolean) Number of hits matching the query to count accurately. Defaults to
10000
.If
true
, the default value is used. Iffalse
, the response does not include the total number of hits matching the query. -
typed_keys
-
(Optional, boolean) If
true
, aggregation and suggester names are be prefixed by their respective types in the response. Defaults totrue
. -
version
-
(Optional, boolean)
If
true
, returns document version as part of a hit. Defaults tofalse
.
Request body
edit-
docvalue_fields
-
(Optional, array of strings and objects) Array of wildcard (
*
) patterns. The request returns doc values for field names matching these patterns in thehits.fields
property of the response.You can specify items in the array as a string or object. See Doc value fields.
Properties of
docvalue_fields
objects-
field
- (Required, string) Wildcard pattern. The request returns doc values for field names matching this pattern.
-
format
-
(Optional, string) Format in which the doc values are returned.
For date fields, you can specify a date date
format
. For numeric fields fields, you can specify a DecimalFormat pattern.For other field data types, this parameter is not supported.
-
-
explain
-
(Optional, boolean) If
true
, returns detailed information about score computation as part of a hit. Defaults tofalse
. -
from
-
(Optional, integer) Starting document offset. Defaults to
0
.By default, you cannot page through more than 10,000 documents using the
from
andsize
parameters. This limit is set using theindex.max_result_window
index setting.Deep paging or requesting many results at once can result in slow searches. Results are sorted before being returned. Because search requests usually span multiple shards, each shard must generate its own sorted results. These separate results must then be combined and sorted to ensure that the overall order is correct.
As an alternative to deep paging, we recommend using scroll or the
search_after
parameter.
-
min_score
-
(Optional, float)
Minimum
_score
for matching documents. Documents with a lower_score
are not included in the search results.
-
query
- (Optional, query object) Defines the search definition using the Query DSL.
-
seq_no_primary_term
-
(Optional, boolean) If
true
, returns sequence number and primary term of the last modification of each hit. See Optimistic concurrency control. -
size
-
(Optional, integer) The number of hits to return. Defaults to
10
.By default, you cannot page through more than 10,000 documents using the
from
andsize
parameters. This limit is set using theindex.max_result_window
index setting.Deep paging or requesting many results at once can result in slow searches. Results are sorted before being returned. Because search requests usually span multiple shards, each shard must generate its own sorted results. These separate results must then be combined and sorted to ensure that the overall order is correct.
As an alternative to deep paging, we recommend using scroll or the
search_after
parameter.If the
scroll
parameter is specified, this value cannot be0
. -
_source
-
(Optional) Indicates which source fields are returned for matching documents. These fields are returned in the
hits._source
property of the search response. Defaults totrue
.Valid values for
_source
-
true
- (boolean) The entire document source is returned.
-
false
- (boolean) The document source is not returned.
-
<wildcard_pattern>
-
(string or array of strings)
Wildcard (
*
) pattern or array of patterns containing source fields to return. -
<object>
-
(object) Object containing a list of source fields to include or exclude.
Properties for
<object>
-
excludes
-
(string or array of strings) Wildcard (
*
) pattern or array of patterns containing source fields to exclude from the response.You can also use this property to exclude fields from the subset specified in
includes
property. -
includes
-
(string or array of strings) Wildcard (
*
) pattern or array of patterns containing source fields to return.If this property is specified, only these source fields are returned. You can exclude fields from this subset using the
excludes
property.
-
-
-
terminate_after
-
(Optional, integer) The maximum number of documents to collect for each shard, upon reaching which the query execution will terminate early.
Defaults to
0
, which does not terminate query execution early. -
timeout
- (Optional, time units) Specifies the period of time to wait for a response. If no response is received before the timeout expires, the request fails and returns an error. Defaults to no timeout.
Response body
edit-
_scroll_id
-
(string) Identifier for the search and its search context.
You can use this scroll ID with the scroll API to retrieve the next batch of search results for the request. See Scroll search results.
This parameter is only returned if the
scroll
query parameter is specified in the request. -
took
-
(integer) Milliseconds it took Elasticsearch to execute the request.
This value is calculated by measuring the time elapsed between receipt of a request on the coordinating node and the time at which the coordinating node is ready to send the response.
Took time includes:
- Communication time between the coordinating node and data nodes
-
Time the request spends in the
search
thread pool, queued for execution - Actual execution time
Took time does not include:
- Time needed to send the request to Elasticsearch
- Time needed to serialize the JSON response
- Time needed to send the response to a client
-
timed_out
-
(boolean)
If
true
, the request timed out before completion; returned results may be partial or empty. -
_shards
-
(object) Contains a count of shards used for the request.
Properties of
_shards
-
total
- (integer) Total number of shards that require querying, including unallocated shards.
-
successful
- (integer) Number of shards that executed the request successfully.
-
skipped
- (integer) Number of shards that skipped the request because a lightweight check helped realize that no documents could possibly match on this shard. This typically happens when a search request includes a range filter and the shard only has values that fall outside of that range.
-
failed
-
(integer)
Number of shards that failed to execute the request. Note that shards
that are not allocated will be considered neither successful nor failed.
Having
failed+successful
less thantotal
is thus an indication that some of the shards were not allocated.
-
-
hits
-
(object) Contains returned documents and metadata.
Properties of
hits
-
total
-
(object) Metadata about the number of returned documents.
Properties of
total
-
value
- (integer) Total number of returned documents.
-
relation
-
(string) Indicates whether the number of returned documents in the
value
parameter is accurate or a lower bound.Values of
relation
:-
eq
- Accurate
-
gte
- Lower bound, including returned documents
-
-
-
max_score
-
(float) Highest returned document
_score
.This value is
null
for requests that do not sort by_score
.
-
hits
-
(array of objects) Array of returned document objects.
Properties of
hits
objects-
_index
- (string) Name of the index containing the returned document.
-
_type
- [6.0.0] Deprecated in 6.0.0. Mapping types are deprecated and will be removed in 8.0. See Removal of mapping types. (string) Mapping type of the returned document.
-
_id
- (string) Unique identifier for the returned document. This ID is only unique within the returned index.
-
_score
- (float) Positive 32-bit floating point number used to determine the relevance of the returned document.
-
_source
-
(object) Original JSON body passed for the document at index time.
You can use the
_source
parameter to exclude this property from the response or specify which source fields to return. -
fields
-
(object) Contains field values for the documents. These fields must be specified in the request using one or more of the following request parameters:
This property is returned only if one or more of these parameters are set.
Properties of
fields
-
<field>
- (array) Key is the field name. Value is the value for the field.
-
-
-
Examples
editSearch an index using the q
query parameter
editGET /my-index-000001/_search?q=user.id:kimchy
The API returns the following response:
{ "took": 5, "timed_out": false, "_shards": { "total": 1, "successful": 1, "skipped": 0, "failed": 0 }, "hits": { "total": { "value": 1, "relation": "eq" }, "max_score": 1.3862942, "hits": [ { "_index": "my-index-000001", "_type" : "_doc", "_id": "0", "_score": 1.3862942, "_source": { "@timestamp": "2099-11-15T14:12:12", "http": { "request": { "method": "get" }, "response": { "status_code": 200, "bytes": 1070000 }, "version": "1.1" }, "source": { "ip": "127.0.0.1" }, "message": "GET /search HTTP/1.1 200 1070000", "user": { "id": "kimchy" } } } ] } }
Search several indices using the q
query parameter
editGET /my-index-000001,my-index-000002/_search?q=user.id:kimchy
Search all indices using the q
query parameter
editTo search all indices in a cluster,
omit the <index>
parameter.
GET /_search?q=user.id:kimchy
Alternatively,
you can use the _all
or *
value in the <index>
parameter.
GET /_all/_search?q=user.id:kimchy
GET /*/_search?q=user.id:kimchy
Search an index using the query
request body parameter
editGET /my-index-000001/_search { "query": { "term": { "user.id": "kimchy" } } }
The API returns the following response:
{ "took": 5, "timed_out": false, "_shards": { "total": 1, "successful": 1, "skipped": 0, "failed": 0 }, "hits": { "total": { "value": 1, "relation": "eq" }, "max_score": 1.3862942, "hits": [ { "_index": "my-index-000001", "_type" : "_doc", "_id": "0", "_score": 1.3862942, "_source": { "@timestamp": "2099-11-15T14:12:12", "http": { "request": { "method": "get" }, "response": { "status_code": 200, "bytes": 1070000 }, "version": "1.1" }, "source": { "ip": "127.0.0.1" }, "message": "GET /search HTTP/1.1 200 1070000", "user": { "id": "kimchy" } } } ] } }