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_uid
fieldedit

Deprecated in 6.0.0.
Now that types have been removed, documents are uniquely identified by their _id
and the _uid
field has only been kept as a view over the _id
field for backward compatibility.
Each document indexed is associated with a _type
(see
Mapping Typeedit) and an _id
. These values are
combined as {type}#{id}
and indexed as the _uid
field.
The value of the _uid
field is accessible in queries, aggregations, scripts,
and when sorting:
# Example documents PUT my_index/_doc/1 { "text": "Document with ID 1" } PUT my_index/_doc/2?refresh=true { "text": "Document with ID 2" }
GET my_index/_search { "query": { "terms": { "_uid": [ "_doc#1", "_doc#2" ]} }, "aggs": { "UIDs": { "terms": { "field": "_uid",
"size": 10 } } }, "sort": [ { "_uid": {
"order": "desc" } } ], "script_fields": { "UID": { "script": { "lang": "painless", "source": "doc['_uid']"
} } } }
Querying on the | |
Aggregating on the | |
Sorting on the | |
Accessing the |