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Hybrid search with search_after
Introduced 2.16
You can control sorting results by applying a search_after condition that provides a live cursor and uses the previous page’s results to obtain the next page’s results. For more information about search_after, see The search_after parameter.
You can paginate the sorted results by applying a search_after condition in the sort queries.
In the following example, sorting is applied by doc_price with a search_after condition:
GET /my-nlp-index/_search?search_pipeline=nlp-search-pipeline
{
"query": {
"hybrid": {
"queries": [
{
"term": {
"category": "permission"
}
},
{
"bool": {
"should": [
{
"term": {
"category": "editor"
}
},
{
"term": {
"category": "statement"
}
}
]
}
}
]
}
},
"sort":[
{
"_id": {
"order": "desc"
}
}
],
"search_after":[200]
}
The response contains the matching documents that are listed after the 200 sort value, sorted by doc_price in descending order:
{
"took": 8,
"timed_out": false,
"_shards": {
"total": 3,
"successful": 3,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 4,
"relation": "eq"
},
"max_score": 0.5,
"hits": [
{
"_index": "my-nlp-index",
"_id": "6yaM4JABZkI1FQv8AwoM",
"_score": null,
"_source": {
"category": "permission",
"doc_keyword": "workable",
"doc_index": 4976,
"doc_price": 100
},
"sort": [
100
]
},
{
"_index": "my-nlp-index",
"_id": "7iaM4JABZkI1FQv8AwoN",
"_score": null,
"_source": {
"category": "editor",
"doc_index": 9871,
"doc_price": 30
},
"sort": [
30
]
}
]
}
}
In the following example, sorting is applied by id with a search_after condition:
GET /my-nlp-index/_search?search_pipeline=nlp-search-pipeline
{
"query": {
"hybrid": {
"queries": [
{
"term": {
"category": "permission"
}
},
{
"bool": {
"should": [
{
"term": {
"category": "editor"
}
},
{
"term": {
"category": "statement"
}
}
]
}
}
]
}
},
"sort":[
{
"_id": {
"order": "desc"
}
}
],
"search_after":["7yaM4JABZkI1FQv8AwoN"]
}
The response contains the matching documents that are listed after the 7yaM4JABZkI1FQv8AwoN sort value, sorted by id in descending order:
{
"took": 17,
"timed_out": false,
"_shards": {
"total": 3,
"successful": 3,
"skipped": 0,
"failed": 0
},
"hits": {
"total": {
"value": 4,
"relation": "eq"
},
"max_score": 0.5,
"hits": [
{
"_index": "my-nlp-index",
"_id": "7iaM4JABZkI1FQv8AwoN",
"_score": null,
"_source": {
"category": "editor",
"doc_index": 9871,
"doc_price": 30
},
"sort": [
"7iaM4JABZkI1FQv8AwoN"
]
},
{
"_index": "my-nlp-index",
"_id": "6yaM4JABZkI1FQv8AwoM",
"_score": null,
"_source": {
"category": "permission",
"doc_keyword": "workable",
"doc_index": 4976,
"doc_price": 100
},
"sort": [
"6yaM4JABZkI1FQv8AwoM"
]
}
]
}
}