我使用eclipse作为我的IDE编写java程序。它通过JDBC驱动程序连接到oracle数据库并打印出一些数据。该程序的工作方式类似于魅力,但在ORDER DATE和SHIPDATE之后输出为零。
他们来自哪里以及如何删除它们?
想要执行Q1(1)或Q2(2)或(X)退出:
ORDER ORDER DATE SHIPDATE COMPANY
==== ========== ======== =======
10440 2007-02-10 00:00:00 2007-02-28 00:00:00 Save-a-lot Markets
10441 2007-02-10 00:00:00 2007-03-14 00:00:00 Old World Delicatessen
这是我的代码:
private static void doQ2(Connection conn)
{
try
{
conn = DriverManager.getConnection(dbURL, user, password);
conn.clearWarnings();
stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("select * from VQ2");
System.out.print("ORDER ORDER DATE SHIPDATE COMPANY\n"
+ "==== ========== ======== =======");
System.out.println("");
while(rs.next())
{
System.out.print(rs.getString("ORDERID"));
System.out.print(" ");
System.out.print(rs.getString("ORDERDATE"));
System.out.print(" ");
System.out.print(rs.getString("SHIPPEDDATE"));
System.out.print(" ");
System.out.print(rs.getString("COMPANYNAME"));
System.out.println("");
}
rs.close();
}
catch(SQLException e)
{
System.err.println(e.getMessage());
}
}
答案 0 :(得分:0)
答案 1 :(得分:0)
只需转换ORDERDATE和SHIPPEDDATE to_char' YYYY-MM-DD'
ResultSet rs = stmt.executeQuery("SELECT ORDERID, TO_CHAR (ORDERDATE, 'YYYY-MM-DD') ORDERDATE, "
+ "TO_CHAR (SHIPPEDDATE, 'YYYY-MM-DD') SHIPPEDDATE, COMPANYNAME FROM VQ2");