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Expand Up @@ -207,13 +207,8 @@ Which should look like:

==== Missing values

The `missing` parameter defines how documents that are missing a value should be treated.
The default behavior is different for `value` and `weight`:

By default, if the `value` field is missing the document is ignored and the aggregation moves on to the next document.
If the `weight` field is missing, it is assumed to have a weight of `1` (like a normal average).

Both of these defaults can be overridden with the `missing` parameter:
By default, the aggregation excludes documents with a missing or `null` value for the `value` or `weight` field. Use the
`missing` parameter to specify a default value for these documents instead.

[source,console]
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