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[[query-dsl-wildcard-query]]
=== Wildcard Query
Matches documents that have fields matching a wildcard expression (*not
analyzed*). Supported wildcards are `*`, which matches any character
sequence (including the empty one), and `?`, which matches any single
character. Note this query can be slow, as it needs to iterate over many
terms. In order to prevent extremely slow wildcard queries, a wildcard
term should not start with one of the wildcards `*` or `?`. The wildcard
query maps to Lucene `WildcardQuery`.
[source,js]
--------------------------------------------------
{
"wildcard" : { "user" : "ki*y" }
}
--------------------------------------------------
A boost can also be associated with the query:
[source,js]
--------------------------------------------------
{
"wildcard" : { "user" : { "value" : "ki*y", "boost" : 2.0 } }
}
--------------------------------------------------
Or :
[source,js]
--------------------------------------------------
{
"wildcard" : { "user" : { "wildcard" : "ki*y", "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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