我打算根据加入进行更新,但收到错误。缺少什么?
update
vna.patients,
vna.patient_observations,
vna.studies,
vna.series,
vna.instances,
vna.sop_classes,
vna.files,
vna.modalities,
vna.issuers
join patient_observations on atients.patient_id=patient_observations.patient_id
join studies
on patient_observations.study_id=studies.study_id
AND studies.patient_id=patients.patient_id
join series
on series.study_id=studies.study_id
join instances
on instances.series_id=series.series_id
join sop_classes
on sop_classes.sop_class_id=instances.sop_class_id
join files
on files.instance_id=instances.instance_id
left join modalities
on modalities.modality_id=series.modality_id
left join issuers
on (patients.issuer_of_patient_identifier=issuers.issuer_id)
set PATIENT_NAME='AAPM'
WHERE PATIENT_IDENTIFIER='TG18-2002';
ERROR 1066 (42000): Not unique table/alias: 'patient_observations'
答案 0 :(得分:2)
您不需要再次指定显示在连接部分
中的表名UPDATE
vna.patients
JOIN patient_observations
ON patients.patient_id = patient_observations.patient_id
JOIN studies
ON patient_observations.study_id = studies.study_id
AND studies.patient_id = patients.patient_id
JOIN series
ON series.study_id = studies.study_id
JOIN instances
ON instances.series_id = series.series_id
JOIN sop_classes
ON sop_classes.sop_class_id = instances.sop_class_id
JOIN files
ON files.instance_id = instances.instance_id
LEFT JOIN modalities
ON modalities.modality_id = series.modality_id
LEFT JOIN issuers
ON (patients.issuer_of_patient_identifier = issuers.issuer_id)
SET PATIENT_NAME = 'AAPM'
WHERE PATIENT_IDENTIFIER = 'TG18-2002' ;
答案 1 :(得分:2)
为什么要混用两种不同的JOIN
语法?简单的规则:从不在FROM
子句中使用逗号(也适用于UPDATE
)。我想你打算:
update vna.patients p
patient_observations po
on p.patient_id = po.patient_id join
studies st
on po.study_id = st.study_id AND
st.patient_id = p.patient_id join
series s
on s.study_id = st.study_id join
instances i
on i.series_id = s.series_id join
sop_classes sc
on sc.sop_class_id = i.sop_class_id join
files f
on f.instance_id = i.instance_id left join
modalities m
on m.modality_id = s.modality_id left join
issuers iss
on (p.issuer_of_patient_identifier = iss.issuer_id)
set p.PATIENT_NAME = 'AAPM'
where p.PATIENT_IDENTIFIER = 'TG18-2002';
这似乎太复杂了。我猜你只是想要:
update vna.patients p
set p.PATIENT_NAME = 'AAPM'
where p.PATIENT_IDENTIFIER = 'TG18-2002';
答案 2 :(得分:0)
错误消息非常清楚,表patient_observations
在查询中的表引用中列出两次。如果您确实需要在同一查询中再次加入它,请为第二个别名添加另一个别名:
...
vna.issuers
join patient_observations as po2 on patients. ....
否则,请删除其中一个。
还尝试使用ANSI SQL连接语法而不是这种旧语法。