Update query when database in ms access

Question

My update query

 update tbl_Clients set  Username=@Username, Password=@Password where Id=@Id

When I am updating this code in giving error Syntax error in update statement

Answer 1

The reason might because Passowrd is a reserved keyword in MS Access. You should use it with square brackets like [Password]

update tbl_Clients set Username = @Username, [Password] = @Password where Id = @Id

As a best practice, change it to non-reserved word.

By the way, if you using OleDb provider, it doesn't care about the named parameters. It only care about their orders. Since you didn't show your code, I hope you provided your parameters in a same order that you defined in your command. Like;

var cmd = OleDbCommand("update tbl_Clients set Username = @Username, [Password] = @Password where Id = @Id");
cmd.Parameters.Add("@Username", OleDbType.VarChar, 255).Value = Username;
cmd.Parameters.Add("@Password", OleDbType.VarChar, 255).Value = Password;
cmd.Parameters.Add("@Id", OleDbType.Integer).Value = Id;

Answer 2

For MS Access you use a question mark ("?") in order to reference parameters in a query, so:

update tbl_Clients set Username=?, Password=? where Id=?

Of course you must be careful to add the parameters to the command object in the same order as they appear in the query. See this blog post for some examples.