1
我是新來的sqlx,我想知道它是否適用於strutscan的master - > detail join子句。病人有許多情節,所以我想查詢所有患者和每個病人結構中嵌入一個小插曲陣列sqlx structscan join查詢
事情是這樣的:
type Episode struct {
EpisodeID int `db:"episode_id"`
PatientID int `db:"patient_id"`
Status string `db:"status"`
}
type Patient struct {
PatientID int `db:"patient_id"`
FirstName string `db:"first_name"`
MiddleName sql.NullString `db:"middle_name"`
LastName string `db:"last_name"`
Episodes []Episode
}
query := `SELECT
mr_patients.patient_id,
mr_patients.first_name,
mr_patients.middle_name,
mr_patients.last_name,
mr_episode_statuses.status,
mr_episodes.episode_id,
mr_episodes.created_at
FROM mr_patients
INNER JOIN mr_episodes ON mr_patients.patient_id = mr_episodes.patient_id
INNER JOIN mr_episode_statuses ON mr_episodes.status_id = mr_episode_statuses.status_id
ORDER BY mr_patients.patient_id, mr_episodes.episode_id`
rows, err := db.Queryx(query)
if err != nil {
log.Fatal(err)
}
var patients []Patient
for rows.Next() {
var p Patient
err = rows.StructScan(&p)
if err != nil {
log.Fatalln(err)
} else {
patients = append(patients, p)
}
}
感謝。
看看:https://github.com/jmoiron/sqlx/blob/master/sqlx_test.go#L470 – molivier
謝謝@molivier,我試過了,但是#mpm說它只能用於一個到一個關係。它不會填充劇集數組。 – mattinsalto