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Document that bool.filter assigns scores of 1.0

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Clinton Gormley 2016-01-13 11:55:56 +01:00
parent d5e20fb763
commit b1ee074921
1 changed files with 71 additions and 0 deletions
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71
docs/reference/query-dsl/bool-query.asciidoc
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@ -70,3 +70,74 @@ final `_score` for each document.
}
}
--------------------------------------------------
==== Scoring with `bool.filter`
Queries specified under the `filter` element have no effect on scoring --
scores are returned as `0`. Scores are only affected by the query that has
been specified. For instance, all three of the following queries return
all documents where the `status` field contains the term `active`.
This first query assigns a score of `0` to all documents, as no scoring
query has been specified:
[source,json]
---------------------------------
GET _search
{
"query": {
"bool": {
"filter": {
"term": {
"status": "active"
}
}
}
}
}
---------------------------------
// AUTOSENSE
This `bool` query has a `match_all` query, which assigns a score of `1.0` to
all documents.
[source,json]
---------------------------------
GET _search
{
"query": {
"bool": {
"query": {
"match_all": {}
},
"filter": {
"term": {
"status": "active"
}
}
}
}
}
---------------------------------
// AUTOSENSE
This `constant_score` query behaves in exactly the same way as the second example above.
The `constant_score` query assigns a score of `1.0` to all documents matched
by the filter.
[source,json]
---------------------------------
GET _search
{
"query": {
"constant_score": {
"filter": {
"term": {
"status": "active"
}
}
}
}
}
---------------------------------
// AUTOSENSE