$count

$count returns how many documents contribute a value for a field.

How It Works

• By default, only documents that have the field are counted.
• If missing is set, documents without the field also contribute to result.

Compatibility

Field must be FAST.

Arguments

await index.aggregate({  aggregations: {    price_count: { $count: { field: "price" } },  },});

index.aggregate(    aggregations={"price_count": {"$count": {"field": "price"}}})

SEARCH.AGGREGATE products '{}' '{"price_count": {"$count": {"field": "price"}}}'

Output

{ "price_count": { "value": 9 } }