KtMongo: MongoDB request DSL/opensavvy.ktmongo.dsl.query/FilterQuery/isUndefined

isUndefined

open fun Field<T, *>.isUndefined()(source)
open fun KProperty1<T, *>.isUndefined()(source)

Deprecated

This functionality is deprecated in the BSON specification. See https://bsonspec.org/spec.html

Selects documents for which the field is undefined.

Example

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

collection.find {
    User::age.isUndefined()
}
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External resources

See also

Opposite.

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