UserBirthdayGroupByOutputType: {
    _avg: UserBirthdayAvgAggregateOutputType | null;
    _count: UserBirthdayCountAggregateOutputType | null;
    _max: UserBirthdayMaxAggregateOutputType | null;
    _min: UserBirthdayMinAggregateOutputType | null;
    _sum: UserBirthdaySumAggregateOutputType | null;
    date: string | null;
    dbId: string;
    lastChanged: Date | null;
    lastYearCongratulated: number | null;
    userId: string;
    whereToCongratulate: string[];
}