Question

我在takeOutTbl中更新记录时遇到错误（只有几条记录）。任何帮助将受到高度赞赏。这是更新代码：

fine = overdueDays * 10; //the fine is calculated by multiplying the number of overdue days by the 10
            simpleUpdate("update takenOutTbl set Random Calculations = Random Calculations " + fine);

它与此方法相关：

public static void simpleUpdate(String update) throws SQLException {
    try {
        Connection connection = dc.DatabaseConnection(); //a connection to the database is established
        PreparedStatement statement = connection.prepareStatement(update); //the conenction is used to prepare the update statement which was sent to this method
        statement.executeUpdate();//the statement is executed
        statement.close(); //the prepared statement is closed
    } catch (SQLException e) {
        JOptionPane.showMessageDialog(null, "Error: the database was not updated. Please try again." );
        System.err.print(e.getMessage());
    }
}

我收到的错误信息是：

user lacks privilege or object not found: RANDOM

Answer 1

按如下方式更正您的查询：

"update takenOutTbl set [Random Calculations] = [Random Calculations] + " + fine

由于列名称中的空格，您必须稍微帮助MS Access，并指出Random Calculations是一列。您可以通过将列名括在括号中来完成此操作。

此外，您的查询最后没有+，所以我在上面的示例中也添加了这个。

更新我的表时出错

1 个答案: