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[[query-dsl-exists-filter]]
=== Exists Filter
Filters documents where a specific field has a value in them.
[source,js]
--------------------------------------------------
{
"constant_score" : {
"filter" : {
"exists" : { "field" : "user" }
}
}
}
--------------------------------------------------
[float]
==== Caching
The result of the filter is always cached.
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