Java连接GreenPlum

1.postgres驱动

下载：https://jdbc.postgresql.org/download.html
我下载的是：postgresql-42.2.4.jar

// URL
String url = "jdbc:postgresql://host:8006/lcc_gp";
// 数据库用户名
String username = "用户名";
// 数据库密码
String password = "密码";
Class.forName("org.postgresql.Driver");
// 获取连接
Connection conn = DriverManager.getConnection(url, username, password);
String sqlssss = "select * from pg_proc where proname='prc_test';";
PreparedStatement pre = conn.prepareStatement(sqlssss);
ResultSet rs = pre.executeQuery();
while(rs.next()){
     System.out.println("===============》"+rs.getString(1));
}