Question

SQL语法中有什么错误吗？

Sql语法：

UPDATE Table1 SET 
       Username='Diana' , 
       Email='Diana@gmail.com' , 
       FirstName='' , 
        LastName='' , 
       CrediCardNum='' 
Where Username='Diana'

它一直给我错误：

没有给出一个或多个必需参数的值。

我尝试重新启动visual studio但不断给出相同的错误

c＃code

                f1.Connection1.Open();
            OleDbCommand Command = new OleDbCommand();
            Command.Connection = f1.Connection1;
            if(m[6].Contains("Red"))
            Command.CommandText = "UPDATE userdlt SET Username='"+textBox10.Text+"' , Email='"+textBox9.Text+"' , FirstName='"+textBox8.Text+ "',LastName='"+textBox7.Text+"',CrediCardNum='"+textBox6.Text+"' Where Username='"+m[0]+"'" ;
            else
                Command.CommandText = "UPDATE Table1 SET Username='"+textBox10.Text+"' , Email='"+textBox9.Text+"' , FirstName='"+textBox8.Text+ "' , LastName='"+textBox7.Text+"' , CrediCardNum='"+textBox6.Text+"' Where Username='"+m[0]+"'" ;
            Clipboard.SetText(Command.CommandText);
            Command.ExecuteNonQuery();
            f1.Connection1.Close();
            MessageBox.Show("Member UPDATED Succefully");

m数组是字符串数组

Answer 1

您的专栏名称creditcardNum缺少t

  Command.CommandText = "UPDATE Table1 SET Username='"+textBox10.Text+"' ,
 Email='"+textBox9.Text+"' , FirstName='"+textBox8.Text+ "' ,
LastName='"+textBox7.Text+"' , CrediCardNum='"+textBox6.Text+"' Where 
Username='"+m[0]+"'" ;

应该是

 Command.CommandText = "UPDATE Table1 SET Username='"+textBox10.Text+"' ,
     Email='"+textBox9.Text+"' , FirstName='"+textBox8.Text+ "' ,
    LastName='"+textBox7.Text+"' , CreditCardNum='"+textBox6.Text+"' Where 
    Username='"+m[0]+"'" ;

您的表格定义图片CreditCardNum

Answer 2

我怀疑＆＃39; @＆＃39;在电子邮件地址中使SqlCommand认为您正在传递参数。避免这种情况的方法如下：

string sql =＆＃34; UPDATE myTable SET col1 = @ val1，col2 = @ val2 WHERE col3 = @ val3＆＃34 ;;

然后，一旦用这个SQL创建了命令对象：

myCommand.Parameters.AddWithValue（＆＃34; val1＆＃34;，＆＃34; anEmail@address.com"）;

等等。

C＃没有给出一个或多个必需参数的值

2 个答案: