52 lines
1.3 KiB
Plaintext
52 lines
1.3 KiB
Plaintext
[[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 that 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]
|
|
--------------------------------------------------
|
|
GET /_search
|
|
{
|
|
"query": {
|
|
"wildcard" : { "user" : "ki*y" }
|
|
}
|
|
}
|
|
--------------------------------------------------
|
|
// CONSOLE
|
|
|
|
A boost can also be associated with the query:
|
|
|
|
[source,js]
|
|
--------------------------------------------------
|
|
GET /_search
|
|
{
|
|
"query": {
|
|
"wildcard" : { "user" : { "value" : "ki*y", "boost" : 2.0 } }
|
|
}
|
|
}
|
|
--------------------------------------------------
|
|
// CONSOLE
|
|
|
|
Or :
|
|
|
|
[source,js]
|
|
--------------------------------------------------
|
|
GET /_search
|
|
{
|
|
"query": {
|
|
"wildcard" : { "user" : { "wildcard" : "ki*y", "boost" : 2.0 } }
|
|
}
|
|
}
|
|
--------------------------------------------------
|
|
// CONSOLE
|
|
|
|
This multi term query allows to control how it gets rewritten using the
|
|
<<query-dsl-multi-term-rewrite,rewrite>>
|
|
parameter.
|