First of all, if you have commas in your fields, then “fields terminated by” option should not be “,”, unless you specify “fields enclosed by”. Secondly, before updating your text fields, you should check for special characters such as “, and have them escaped.
For example,
Quote:
Hello ” Kevin, Peter” , how are you?
should be entered as 'Hello ” Kevin, Peter” , how are you?' . In this case “” is the escape character.