Static Methodgrdb 7.1.0GRDB

    exists(_:id:)

    Returns whether a record exists for this primary key.

    TableRecord.swift:371
    static func exists(_ db: Database, id: ID) throws -> Bool
    Mangled symbol
    s4GRDB11TableRecordPAAs12IdentifiableRzAA24DatabaseValueConvertible2IDsADPRpzrlE6exists_2idSbAA0E0C_AHtKFZ What are these?
    FNV24 hash
    8TUNH
    Constraints
    where Self:Identifiable, Self.ID:DatabaseValueConvertible

    Parameters

    db

    A database connection.

    id

    A primary key value.

    Returns

    Whether a record exists for this primary key.

    All single-column primary keys are supported:

    struct Player: TableRecord, Identifiable {
    var id: Int64
}
struct Country: TableRecord, Identifiable {
    var id: String
}

try dbQueue.read { db in
    let playerExists = try Player.exists(db, id: 1)
    let countryExists = try Country.exists(db, id: "FR")
}