mysql - SQL 错误：1066 不是唯一的表/别名

Question

嗨我被困在这个查询上

SELECT c1.ID FROM cliente JOIN corsa AS c1 ON corsa.cliente_ID = cliente.ID_cliente, cliente JOIN corsa AS c2 ON corsa.cliente_ID = cliente.ID_cliente WHERE c1.tariffa = c2.tariffa AND c2.ID_cliente = 1 AND c2.data_corsa = "2012-06-20";

我收到错误 1066 not unique table/alias: 'cliente'。我知道 FROM 语句中存在问题，我在其中两次调用“cliente”。我只是不知道如何使它工作。

我试过这个

SELECT DISTINCT c1.* FROM cliente INNER JOIN corsa AS c1, cliente c2 INNER JOIN corsa AS c3 WHERE c1.tariffa = c3.tariffa AND c3.cliente_ID = 1 AND c3.data_corsa = "2012-06-20";

它似乎有效，但我不太确定。

谢谢