mysql - solucion - Tabla/alias no únicos

not unique table/alias mysql solucion

Question

Recibo el error ERROR 1066 (42000): Not unique table/alias:

No puedo averiguar qué está mal con eso.

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'';

Answer 1

Tratar

 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'';

Answer 2

 select persons.personsid,name,info.id,address
-> from persons
-> inner join persons on info.infoid = info.info.id;