Update statment problem

Question

I having a problem using th following preparded statement:
String updateDatabase = "UPDATE titles SET titles.isbn = ? WHERE titles.isbn = "+ISBN+"";//ISBN is a string already initialized
preStatement = connection.prepareStatement(updateDatabase);
preStatement.set.setString(1,Sisbn);//Sisbn is a string to update database.
preStatement.executeUpdate();
preStatement.close();
This of course is inclosed in a try catch.
However, when I run this I get the following error:
Data type mismatch in criteria expression.
The field in the database is text so I don't see what could be the mismatch. Any help would be appreciated.

Answer 1

1) You didn't quote the value in the where clause
2) Why can't you use another parameter (?) and set that, too? Example from the docs:PreparedStatement pstmt = con.prepareStatement("UPDATE EMPLOYEES
                                     SET SALARY = ? WHERE ID = ?");