Wildcard query
editWildcard query
editReturns documents that contain terms matching a wildcard pattern.
A wildcard operator is a placeholder that matches one or more characters. For
example, the * wildcard operator matches zero or more characters. You can
combine wildcard operators with other characters to create a wildcard pattern.
Example request
editThe following search returns documents where the user field contains a term
that begins with ki and ends with y. These matching terms can include kiy,
kity, or kimchy.
GET /_search
{
"query": {
"wildcard": {
"user": {
"value": "ki*y",
"boost": 1.0,
"rewrite": "constant_score"
}
}
}
}
Top-level parameters for wildcard
edit-
<field> - (Required, object) Field you wish to search.
Parameters for <field>
edit-
value -
(Required, string) Wildcard pattern for terms you wish to find in the provided
<field>.This parameter supports two wildcard operators:
-
?, which matches any single character -
*, which can match zero or more characters, including an empty one
Avoid beginning patterns with
*or?. This can increase the iterations needed to find matching terms and slow search performance. -
-
boost -
(Optional, float) Floating point number used to decrease or increase the relevance scores of a query. Defaults to
1.0.You can use the
boostparameter to adjust relevance scores for searches containing two or more queries.Boost values are relative to the default value of
1.0. A boost value between0and1.0decreases the relevance score. A value greater than1.0increases the relevance score. -
rewrite -
(Optional, string) Method used to rewrite the query. For valid values and more information, see the
rewriteparameter.