我在 postgres 中有一對多的關系（Event 有很多 EventUser），并且想掃描并存儲到 structEvent中。// EventUser structtype EventUser struct {    ID              int64    CheckedIn       bool    PaidAmount      float32}// Event structtype Event struct {    ID         int64  `json:"id"`    Name       string `json:"name"`    StartTime  string `json:"startTime"`    EventUsers string}這是查詢：SELECT events.id, events.name, events."startTime", e."eventUsers" as "eventUsers"FROM "Events" as eventsLEFT JOIN (        SELECT events.id as id, array_to_json(array_agg(eu.*)) as "eventUsers"        FROM "EventUsers" as eu        JOIN "Events" AS "events" ON events.id = eu."eventId"        WHERE eu.status = 'RESERVED'        GROUP BY events.id    ) AS e USING (id)WHERE events.status = 'COMPLETED' 查詢返回：{  id: 2,  name: "2 Events are 48 days from now",  startTime: 1590471343345,  eventUsers: [    {      id: 2,      checkedIn: false,      paidAmount: 8    },    {      id: 3,      checkedIn: false,       paidAmount: 8,    },  ],};這就是我正在嘗試做的，它直接將每個項目掃描eventUsers到結構中，并存儲在Event的結構中。got := []Event{}for rows.Next() {    var r Event    err = rows.Scan(&r.ID, &r.Name, &r.StartTime, &r.EventUsers)    if err != nil {        panic(err)    }}我想我可以通過將數組存儲為字符串然后再存儲它來實現這unmarshal一點。我想要的是類似于sql.NullString.