Instance Methodgrdb 7.3.0GRDB

    unique(onConflict:)

    Adds a unique constraint.

    ColumnDefinition.swift:185
    @discardableResult func unique(onConflict conflictResolution: Database.ConflictResolution? = nil) -> Self
    Mangled symbol
    s4GRDB16ColumnDefinitionC6unique10onConflictACXDAA8DatabaseC0F10ResolutionOSg_tF What are these?
    FNV24 hash
    7PQZ4

    Parameters

    conflictResolution

    An optional ConflictResolution.

    Returns

    self so that you can further refine the column definition.

    For example:

    // CREATE TABLE player(
//   email TEXT UNIQUE
// )
try db.create(table: "player") { t in
    t.column("email", .text).unique()
}

    Related SQLite documentation: https://www.sqlite.org/lang_createtable.html#uniqueconst