MySQL 不是唯一的表/别名
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时间：2020-08-31 21:38:37 来源:igfitidea点击:
Not unique table/alias
提问by Malcr001
I get the error ERROR 1066 (42000): Not unique table/alias:
我收到错误 ERROR 1066 (42000): Not unique table/alias:
I cant figure out whats wrong with it.
我无法弄清楚它有什么问题。
SELECT Project_Assigned.ProjectID, Project_Title, Account.Account_ID, Username, Access_Type
FROM Project_Assigned
JOIN Account
? ON Project_Assigned.AccountID = Account.Account_ID
JOIN Project
? ON Project_Assigned.ProjectID = Project.Project_ID
where Access_Type = 'Client';
采纳答案by Shef
Try
尝试
SELECT pa.ProjectID, p.Project_Title, a.Account_ID, a.Username, a.Access_Type, c.First_Name, c.Last_Name
FROM Project_Assigned pa
INNER JOIN Account a
ON pa.AccountID = a.Account_ID
INNER JOIN Project p
ON pa.ProjectID = p.Project_ID
INNER JOIN Clients c
ON a.Account_ID = c.Account_ID
WHERE a.Access_Type = 'Client';
回答by user8321755
select persons.personsid,name,info.id,address
-> from persons
-> inner join persons on info.infoid = info.info.id;
