hey, I am trying to compute a ratio of one-to-many sum aggregated values - obtained via a filters aggregation - against a top-level sum aggregated value without luck.

Basically I want to compute a score for all docs (`sum`

) and then for each bucket created:

- calculate the bucket score
- calculate the bucket ratio: total score / bucket score

Below is the query used and the limitation is related with: `bucket_path`

- Pipeline aggregations | Elasticsearch Guide [7.17] | Elastic because: `Paths are relative from the position of the pipeline aggregation; they are not absolute paths, and the path cannot go back "up" the aggregation tree.`

```
{
"size": 0,
"aggs": {
"score_total": {
"sum": {
"field": "score"
}
},
"keyword": {
"filters": { /* apply filters to create buckets - avoid to include because are larger*/ },
"aggregations": {
"score_keyword": {
"sum": {
"field": "score"
}
},
"ratio_calculated": {
"bucket_script": {
"buckets_path": {
"bucket_value": "score_keyword",
"total_value": "score_total"
},
"script": "params.bucket_value / params.total_value",
"gap_policy": "insert_zeros"
}
}
}
}
}
}
```

I checked over others pipelines aggregation without success, so I want to know if there is a limitation/constraint from ES or if is possible to make in another way (more/less efficient but at least that works).

Thanks in advance!