Question

以下代码有什么问题。它给出了语法错误。

str = "UPDATE Users SET Password=? WHERE User_Name=?"
cmd1 = New OleDbCommand(str, con)
cmd1.Parameters.AddWithValue("@Password", pwn)
cmd1.Parameters.AddWithValue("@User_Name", un)
cmd1.ExecuteNonQuery()
MsgBox("Password Updated Successfully")

Answer 1

密码是使用[Password]

的保留密钥

str = "UPDATE Users SET [Password]=? WHERE User_Name=?"
//str = "UPDATE Users SET [Password]=@Password WHERE User_Name=@User_Name"

cmd1 = New OleDbCommand(str, con)
cmd1.Parameters.AddWithValue("@Password", pwn)
cmd1.Parameters.AddWithValue("@User_Name", un)
cmd1.ExecuteNonQuery()
MsgBox("Password Updated Successfully")

reserved Keywords

Answer 2

PASSWORD是reserved keyword，将您的代码更改为

str = "UPDATE Users SET [Password]=? WHERE User_Name=?"
cmd1 = New OleDbCommand(str, con)
cmd1.Parameters.AddWithValue("@Password", pwn)
cmd1.Parameters.AddWithValue("@User_Name", un)
cmd1.ExecuteNonQuery()
MsgBox("Password Updated Successfully")

顺便说一下，如果你仍然可以这样做，我建议将此列更改为非保留字，否则每次都会出现此问题

如何解决更新MS Access数据库中的错误

2 个答案: