nice_hui_的博客

官网文档：https://dev.mysql.com/doc/refman/8.0/en/problems-with-alias.html别名只能用于 GROUP BY, ORDER BY, 或者 HAVING 中，不能用于where中。原因如下：An alias can be used in a query select list to give a column a different...

https://www.cnblogs.com/huanongying/p/7021555.html

import java.sql.Connection;import java.sql.Driver;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;public class JDBC { public ...