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[[query-dsl-prefix-query]]
=== Prefix Query
Matches documents that have fields containing terms with a specified
prefix (*not analyzed*). The prefix query maps to Lucene `PrefixQuery`.
The following matches documents where the user field contains a term
that starts with `ki`:
[source,js]
--------------------------------------------------
{
"prefix" : { "user" : "ki" }
}
--------------------------------------------------
A boost can also be associated with the query:
[source,js]
--------------------------------------------------
{
"prefix" : { "user" : { "value" : "ki", "boost" : 2.0 } }
}
--------------------------------------------------
Or :
[source,js]
--------------------------------------------------
{
"prefix" : { "user" : { "prefix" : "ki", "boost" : 2.0 } }
}
--------------------------------------------------
This multi term query allows to control how it gets rewritten using the
<<query-dsl-multi-term-rewrite,rewrite>>
parameter.
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