Hello
I have the following data
[
{
"id": 1,
"collection": [
{
"key": "val1"
},
{
"key": "val2"
},
{
"key": "val3"
}
]
},
{
"id": 2,
"collection": [
{
"key": "val1"
},
{
"key": "val2"
}
]
}
]
And I would like to be able to get a repartition of the number of items
into the
“collection” key. For example, With my sample, I expect something like:
- 1 documents has 3 items
- 1 document has 2 items
And then, after getting this king of information, I would like to be able to
query ES to ask something like “give me all document that have 2 items
under the
collection property”.
I dig into the documentation, test lot of things with sens, but nothing
give me the expected result.
So I have few questions:
- Is it possible?
- If yes, where can I find the doc?
- If no, is it because I did not understand ES correctly?
Thanks 
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Because I would like to be able to also filter node in the