Question

public void create(String name) {
    create_name = name;
    try {
        getConnection();
        q = "create table ? (emp_id number (10), emp_name varchar (15))";
        pst = con.prepareStatement(q);

        pst.setString(1, create_name);
        int j = pst.executeUpdate();

        JOptionPane.showMessageDialog(new JDialog(), "Table is Created");

    } catch (Exception e) {
        JOptionPane.showMessageDialog(new JDialog(), "Table is not Created");
    }

}

Answer 1

要创建一个包含PrepapredStatement的表，这是不可能的，因为当您创建

时

q= "create table ? (emp_id number (10), emp_name varchar (15))";

所以实际上它会在这里执行这个查询：

create table 'table_name' (emp_id number (10), emp_name varchar (15))

并且在您创建表格时禁止'table_name'，所以我建议您使用PrepapredStatement这样的内容：

try {
    Class.forName(driver);
    Connection connection = DriverManager.getConnection(DB_URL, DB_username, DB_password);
    PreparedStatement preparedStatement = connection.prepareStatement("create table ? (emp_id number (10), emp_name varchar (15))");
    preparedStatement.setString(1, "table_name");

    System.out.println(preparedStatement.toString());
    Statement st = connection.createStatement();
    int i = st.executeUpdate(preparedStatement.toString().replaceAll("\"", "\""));

    JOptionPane.showMessageDialog(new JDialog(), "Table is Created");        

} catch (ClassNotFoundException | SQLException e) {
    JOptionPane.showMessageDialog(new JDialog(), "Table is not Created");
}

当您准备语句时，这个想法很简单，您将获得上一个查询，您可以像preparedStatement.toString()一样获取它，这样您就可以在{{1}开头和最后更改''因为create a table with a name which contain spaces在oracle中允许""。

尝试创建用户定义的数据库

1 个答案: