AllColumns

public struct AllColumns

AllColumns is the * in SELECT *.

You use AllColumns in your custom implementation of TableMapping.databaseSelection.

For example:

struct Player : TableMapping {
    static var databaseTableName = "players"
    static let databaseSelection: [SQLSelectable] = [AllColumns(), Column.rowID]
}

// SELECT *, rowid FROM players
let request = Player.all()