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Update post-aggregations.md (#5237) 

* Update post-aggregations.md

I think this is more clear. I am not sure how multiplying by 100 is involved in averaging...

* Update post-aggregations.md

adding additional aggregator

* Update post-aggregations.md
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Stephanie Rivera 2018-02-06 17:26:39 -07:00 committed by Jonathan Wei
parent e255d66b85
commit 77bb2f9c9f
1 changed files with 24 additions and 3 deletions
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27
docs/content/querying/post-aggregations.md
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@ -162,14 +162,35 @@ The format of the query JSON is as follows:
"postAggregations" : [{
"type" : "arithmetic",
"name" : "average",
"fn" : "/",
"fields" : [
{ "type" : "fieldAccess", "name" : "tot", "fieldName" : "tot" },
{ "type" : "fieldAccess", "name" : "rows", "fieldName" : "rows" }
]
}]
...
}
```
```json
{
...
"aggregations" : [
{ "type" : "doubleSum", "name" : "tot", "fieldName" : "total" },
{ "type" : "doubleSum", "name" : "part", "fieldName" : "part" }
],
"postAggregations" : [{
"type" : "arithmetic",
"name" : "part_percentage",
"fn" : "*",
"fields" : [
{ "type" : "arithmetic",
"name" : "div",
"name" : "ratio",
"fn" : "/",
"fields" : [
{ "type" : "fieldAccess", "name" : "tot", "fieldName" : "tot" },
{ "type" : "fieldAccess", "name" : "rows", "fieldName" : "rows" }
{ "type" : "fieldAccess", "name" : "part", "fieldName" : "part" },
{ "type" : "fieldAccess", "name" : "tot", "fieldName" : "tot" }
]
},
{ "type" : "constant", "name": "const", "value" : 100 }