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- Release notes
- Elasticsearch version 8.17.1
- Elasticsearch version 8.17.0
- Elasticsearch version 8.16.2
- Elasticsearch version 8.16.1
- Elasticsearch version 8.16.0
- Elasticsearch version 8.15.5
- Elasticsearch version 8.15.4
- Elasticsearch version 8.15.3
- Elasticsearch version 8.15.2
- Elasticsearch version 8.15.1
- Elasticsearch version 8.15.0
- Elasticsearch version 8.14.3
- Elasticsearch version 8.14.2
- Elasticsearch version 8.14.1
- Elasticsearch version 8.14.0
- Elasticsearch version 8.13.4
- Elasticsearch version 8.13.3
- Elasticsearch version 8.13.2
- Elasticsearch version 8.13.1
- Elasticsearch version 8.13.0
- Elasticsearch version 8.12.2
- Elasticsearch version 8.12.1
- Elasticsearch version 8.12.0
- Elasticsearch version 8.11.4
- Elasticsearch version 8.11.3
- Elasticsearch version 8.11.2
- Elasticsearch version 8.11.1
- Elasticsearch version 8.11.0
- Elasticsearch version 8.10.4
- Elasticsearch version 8.10.3
- Elasticsearch version 8.10.2
- Elasticsearch version 8.10.1
- Elasticsearch version 8.10.0
- Elasticsearch version 8.9.2
- Elasticsearch version 8.9.1
- Elasticsearch version 8.9.0
- Elasticsearch version 8.8.2
- Elasticsearch version 8.8.1
- Elasticsearch version 8.8.0
- Elasticsearch version 8.7.1
- Elasticsearch version 8.7.0
- Elasticsearch version 8.6.2
- Elasticsearch version 8.6.1
- Elasticsearch version 8.6.0
- Elasticsearch version 8.5.3
- Elasticsearch version 8.5.2
- Elasticsearch version 8.5.1
- Elasticsearch version 8.5.0
- Elasticsearch version 8.4.3
- Elasticsearch version 8.4.2
- Elasticsearch version 8.4.1
- Elasticsearch version 8.4.0
- Elasticsearch version 8.3.3
- Elasticsearch version 8.3.2
- Elasticsearch version 8.3.1
- Elasticsearch version 8.3.0
- Elasticsearch version 8.2.3
- Elasticsearch version 8.2.2
- Elasticsearch version 8.2.1
- Elasticsearch version 8.2.0
- Elasticsearch version 8.1.3
- Elasticsearch version 8.1.2
- Elasticsearch version 8.1.1
- Elasticsearch version 8.1.0
- Elasticsearch version 8.0.1
- Elasticsearch version 8.0.0
- Elasticsearch version 8.0.0-rc2
- Elasticsearch version 8.0.0-rc1
- Elasticsearch version 8.0.0-beta1
- Elasticsearch version 8.0.0-alpha2
- Elasticsearch version 8.0.0-alpha1
- Dependencies and versions
Using ES|QL to query multiple indices
editUsing ES|QL to query multiple indices
editWith ES|QL, you can execute a single query across multiple indices, data streams, or aliases. To do so, use wildcards and date arithmetic. The following example uses a comma-separated list and a wildcard:
FROM employees-00001,other-employees-*
Use the format <remote_cluster_name>:<target>
to query data streams and indices
on remote clusters:
FROM cluster_one:employees-00001,cluster_two:other-employees-*
Field type mismatches
editWhen querying multiple indices, data streams, or aliases, you might find that the same field is mapped to multiple different types. For example, consider the two indices with the following field mappings:
index: events_ip
{ "mappings": { "properties": { "@timestamp": { "type": "date" }, "client_ip": { "type": "ip" }, "event_duration": { "type": "long" }, "message": { "type": "keyword" } } } }
index: events_keyword
{ "mappings": { "properties": { "@timestamp": { "type": "date" }, "client_ip": { "type": "keyword" }, "event_duration": { "type": "long" }, "message": { "type": "keyword" } } } }
When you query each of these individually with a simple query like FROM events_ip
, the results are provided with type-specific columns:
FROM events_ip | SORT @timestamp DESC
@timestamp:date | client_ip:ip | event_duration:long | message:keyword |
---|---|---|---|
2023-10-23T13:55:01.543Z |
172.21.3.15 |
1756467 |
Connected to 10.1.0.1 |
2023-10-23T13:53:55.832Z |
172.21.3.15 |
5033755 |
Connection error |
2023-10-23T13:52:55.015Z |
172.21.3.15 |
8268153 |
Connection error |
Note how the client_ip
column is correctly identified as type ip
, and all values are displayed.
However, if instead the query sources two conflicting indices with FROM events_*
, the type of the client_ip
column cannot be determined
and is reported as unsupported
with all values returned as null
.
FROM events_* | SORT @timestamp DESC
@timestamp:date | client_ip:unsupported | event_duration:long | message:keyword |
---|---|---|---|
2023-10-23T13:55:01.543Z |
null |
1756467 |
Connected to 10.1.0.1 |
2023-10-23T13:53:55.832Z |
null |
5033755 |
Connection error |
2023-10-23T13:52:55.015Z |
null |
8268153 |
Connection error |
2023-10-23T13:51:54.732Z |
null |
725448 |
Connection error |
2023-10-23T13:33:34.937Z |
null |
1232382 |
Disconnected |
2023-10-23T12:27:28.948Z |
null |
2764889 |
Connected to 10.1.0.2 |
2023-10-23T12:15:03.360Z |
null |
3450233 |
Connected to 10.1.0.3 |
In addition, if the query refers to this unsupported field directly, the query fails:
FROM events_* | SORT client_ip DESC
Cannot use field [client_ip] due to ambiguities being mapped as [2] incompatible types: [ip] in [events_ip], [keyword] in [events_keyword]
Union types
editThis functionality is in technical preview and may be changed or removed in a future release. Elastic will work to fix any issues, but features in technical preview are not subject to the support SLA of official GA features.
ES|QL has a way to handle field type mismatches. When the same field is mapped to multiple types in multiple indices,
the type of the field is understood to be a union of the various types in the index mappings.
As seen in the preceding examples, this union type cannot be used in the results,
and cannot be referred to by the query — except in KEEP
, DROP
or when it’s passed to a type conversion function that accepts all the types in
the union and converts the field to a single type. ES|QL offers a suite of type conversion functions to achieve this.
In the above examples, the query can use a command like EVAL client_ip = TO_IP(client_ip)
to resolve
the union of ip
and keyword
to just ip
.
You can also use the type-conversion syntax EVAL client_ip = client_ip::IP
.
Alternatively, the query could use TO_STRING
to convert all supported types into KEYWORD
.
For example, the query that returned client_ip:unsupported
with null
values can be improved using the TO_IP
function or the equivalent field::ip
syntax.
These changes also resolve the error message.
As long as the only reference to the original field is to pass it to a conversion function that resolves the type ambiguity, no error results.
FROM events_* | EVAL client_ip = TO_IP(client_ip) | KEEP @timestamp, client_ip, event_duration, message | SORT @timestamp DESC
@timestamp:date | client_ip:ip | event_duration:long | message:keyword |
---|---|---|---|
2023-10-23T13:55:01.543Z |
172.21.3.15 |
1756467 |
Connected to 10.1.0.1 |
2023-10-23T13:53:55.832Z |
172.21.3.15 |
5033755 |
Connection error |
2023-10-23T13:52:55.015Z |
172.21.3.15 |
8268153 |
Connection error |
2023-10-23T13:51:54.732Z |
172.21.3.15 |
725448 |
Connection error |
2023-10-23T13:33:34.937Z |
172.21.0.5 |
1232382 |
Disconnected |
2023-10-23T12:27:28.948Z |
172.21.2.113 |
2764889 |
Connected to 10.1.0.2 |
2023-10-23T12:15:03.360Z |
172.21.2.162 |
3450233 |
Connected to 10.1.0.3 |
Index metadata
editIt can be helpful to know the particular index from which each row is sourced.
To get this information, use the METADATA
option on the FROM
command.
FROM events_* METADATA _index | EVAL client_ip = TO_IP(client_ip) | KEEP _index, @timestamp, client_ip, event_duration, message | SORT @timestamp DESC
_index:keyword | @timestamp:date | client_ip:ip | event_duration:long | message:keyword |
---|---|---|---|---|
events_ip |
2023-10-23T13:55:01.543Z |
172.21.3.15 |
1756467 |
Connected to 10.1.0.1 |
events_ip |
2023-10-23T13:53:55.832Z |
172.21.3.15 |
5033755 |
Connection error |
events_ip |
2023-10-23T13:52:55.015Z |
172.21.3.15 |
8268153 |
Connection error |
events_keyword |
2023-10-23T13:51:54.732Z |
172.21.3.15 |
725448 |
Connection error |
events_keyword |
2023-10-23T13:33:34.937Z |
172.21.0.5 |
1232382 |
Disconnected |
events_keyword |
2023-10-23T12:27:28.948Z |
172.21.2.113 |
2764889 |
Connected to 10.1.0.2 |
events_keyword |
2023-10-23T12:15:03.360Z |
172.21.2.162 |
3450233 |
Connected to 10.1.0.3 |
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