Question

SELECT P_descript, p_price, v_name 
From Vendor, Product
WHERE p_price > 6.99 AND Vendor.V_STATE IN ('TN')
Inner Join Vendor ON product.v_code = vendor.v_code
ORDER BY p_price DESC;

此内部联接在Oracle SQL Developer中不断加下划线。我不确定它有什么问题，但我觉得它是正确的。请帮帮我。

Answer 1

您在声明中有两次供应商，首先在from语句中，然后在内部联接上。

试试这个：

SELECT P_descript, p_price, v_name 
From Product
Inner Join Vendor ON Product.v_code = Vendor.v_code
WHERE p_price > 6.99 AND Vendor.V_STATE IN ('TN')
ORDER BY p_price DESC;

试图弄清楚这个SQL语句有什么问题

1 个答案: