도움말을 작성하는 데 도움이됩니다.MySQL ManyToMany 중복 행 표시
+-------------------+
| Patient |
| PatientPhysician |
| Physician |
+-------------------+
이 환자 그의 FIRSTNAME,성 하나 내 DOBPhysicianOrganizationId이 비슷 찾기 :
나는 세 개의 테이블이있다.
나는 당신에게 당신이 더 문제를 이해하고 데이터가 표시됩니다 :
mysql> SELECT pt.Id, pt.FirstName, pt.LastName, pt.DoB, ph.PhysicianOrganizationId
-> FROM Patient pt, Physician ph, PatientPhysician pp
-> WHERE pt.Id = pp.IdPatient AND ph.Id = pp.IdPhysician
-> ORDER BY pt.Id;
+----+-----------+-------------+------------+-------------------------+
| Id | FirstName | LastName | DoB | PhysicianOrganizationId |
+----+-----------+-------------+------------+-------------------------+
| 1 | Mario | Gotze | 1989-01-09 | 101 |
| 2 | Mario | Gotze | 1989-01-09 | 102 |
| 3 | Mario | Gotze | 1989-01-09 | 101 |
| 4 | Fillip | Gotze | 1989-01-09 | 101 |
| 5 | Marco | Rues | 1988-09-12 | 102 |
| 5 | Marco | Rues | 1988-09-12 | 101 |
| 5 | Marco | Rues | 1988-09-12 | 103 |
| 6 | Dimitri | Payet | 1986-10-10 | 101 |
| 7 | Dimitri | Payet | 1986-10-10 | 101 |
| 8 | Dimitri | Payet | 1986-10-10 | 101 |
| 8 | Dimitri | Payet | 1986-10-10 | 102 |
| 9 | Zlatan | Ibrahimovic | 1982-01-12 | 103 |
| 9 | Zlatan | Ibrahimovic | 1982-01-12 | 101 |
| 10 | Zlatan | Ibrahimovic | 1982-01-12 | 101 |
| 10 | Zlatan | Ibrahimovic | 1982-01-12 | 103 |
+----+-----------+-------------+------------+-------------------------+
15 rows in set (0.01 sec)
내가 쿼리를 작성을하지만 잘못된 결과를 생성합니다
SELECT
pt.Id,
pt.FirstName,
pt.LastName,
pt.DoB,
ph.PhysicianOrganizationId
FROM Patient pt, Physician ph, PatientPhysician pp
WHERE pt.Id = pp.IdPatient AND ph.Id = pp.IdPhysician
GROUP BY pt.FirstName, pt.LastName, pt.DoB, ph.PhysicianOrganizationId
HAVING COUNT(*) > 1 ORDER BY pt.Id;
결과 :
+----+-----------+-------------+------------+-------------------------+
| Id | FirstName | LastName | DoB | PhysicianOrganizationId |
+----+-----------+-------------+------------+-------------------------+
| 1 | Mario | Gotze | 1989-01-09 | 101 |
| 6 | Dimitri | Payet | 1986-10-10 | 101 |
| 9 | Zlatan | Ibrahimovic | 1982-01-12 | 103 |
| 9 | Zlatan | Ibrahimovic | 1982-01-12 | 101 |
+----+-----------+-------------+------------+-------------------------+
을 이 결과가 필요합니다.
+----+-----------+-------------+------------+-------------------------+
| Id | FirstName | LastName | DoB | PhysicianOrganizationId |
+----+-----------+-------------+------------+-------------------------+
| 1 | Mario | Gotze | 1989-01-09 | 101 |
| 3 | Mario | Gotze | 1989-01-09 | 101 |
| 6 | Dimitri | Payet | 1986-10-10 | 101 |
| 7 | Dimitri | Payet | 1986-10-10 | 101 |
| 8 | Dimitri | Payet | 1986-10-10 | 101 |
| 9 | Zlatan | Ibrahimovic | 1982-01-12 | 103 |
| 9 | Zlatan | Ibrahimovic | 1982-01-12 | 101 |
| 10 | Zlatan | Ibrahimovic | 1982-01-12 | 103 |
| 10 | Zlatan | Ibrahimovic | 1982-01-12 | 101 |
+----+-----------+-------------+------------+-------------------------+
내가 뭘 잘못하고 있는지 말해?
좋습니다! 고마워요/ –
작은 실수를 할 때마다 바꿀 것입니다. –