MongoDB driver for Kotlin (coroutines)/opensavvy.ktmongo.coroutines/JvmMongoCollection/count

count

open suspend override fun count(): Long(source)

Counts how many documents exist in the collection.

External resources

See also

Faster alternative when the result doesn't need to be exact.

open suspend override fun count(options: CountOptions<Document>.() -> Unit, predicate: FilterQuery<Document>.() -> Unit): Long(source)

Counts how many documents match predicate in the collection.

Example

class User(
    val name: String,
    val age: Int,
)

collection.count {
    User::name eq "foo"
    User::age eq 10
}
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External resources