Return number of rows affected by SQL UPDATE statement in Java

Question

I\'m using a MySQL database and accessing it through Java.

PreparedStatement prep1 = this.connection.prepareStatement(
        \"UPDATE user_table 
                


        

Answer 1

1. First of all, prepare the 'PreparedStatement' object using below constructor:

   PreparedStatement pStmt = con.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS);
   //here variable 'sql' is your query ("UPDATE user_table SET Level = 'Super' WHERE Username = ?") 
   

2. Then, set your argument to 'pStmt'. In this case:

   prep1.setString(1, username);
   

3. Finally, executeUpdate and get affected rows as an integer

   int affectedRows = pStmt.executeUpdate();