问题描述
如何在弹性搜索中对具有复合聚合的字段进行排序。
我们正在使用弹性搜索版本6.8.6，并尝试使用复合聚合对字段进行排序。 但是我们无法通过汇总获得预期的结果。
这是我们的映射
{
"properties": {
"department": {
"type": "text","fields": {
"keyword": {
"ignore_above": 256.0,"type": "keyword"
}
}
},"project": {
"type": "text","billingUnit": {
"type": "text","billingType": {
"type": "text","application": {
"type": "text","environmet": {
"type": "text","cost": {
"type": "float"
}
}
}
通过使用以下查询，我们无法进行排序，结果不按字母顺序排列：
{
"query": {
"bool": {
"must": [
{
"match_phrase": {
"department": {
"query": "HR","slop": 0,"zero_terms_query": "NONE","boost": 1.0
}
}
}
],"adjust_pure_negative": true,"boost": 1.0
}
},"sort": [
{
"project.keyword": {
"order": "desc"
}
}
],"aggs": {
"TERM_RANGE": {
"composite": {
"size": 10000,"sources": [
{
"billingUnitKey": {
"terms": {
"field": "billingUnit.keyword","missing_bucket": false
}
}
},{
"billingTypeKey": {
"terms": {
"field": "billingType.keyword","missing_bucket": false
}
}
}
]
},"aggregations": {
"TOTAL": {
"sum": {
"field": "cost"
}
},"dataHits": {
"top_hits": {
"from": 0,"size": 1,"version": false,"seq_no_primary_term": false,"explain": false,"_source": {
"includes": [
"application.keyword","environmet.keyword",],"excludes": []
},"docvalue_fields": [
{
"field": "application.keyword"
},{
"field": "environmet.keyword"
}
]
}
},"paginate_bucket": {
"bucket_sort": {
"sort": [],"from": 0,"size": 100,"gap_policy": "SKIP"
}
}
}
}
}
}
在以下查询中进行排序（没有聚合）可以很好地工作
{
"query": {
"match": {
"department": "HR"
}
},"sort": [
{
"project.keyword": {
"order": "desc"
}
}
]
}