Imagine, you have a 10K records in a table in your database. And on each line, there is a character that you want to remove or replaced with other characters. If do it manually, it may take days. Creating a system or script to solve the problem it was still takes a lot of times.
I have even had a case like this and I am looking on the internet. Turns out there and very simple. MySQL has a replace function similar to PHP. Just use this in phpmyadmin and all your problems will be completed.
UPDATE `table` SET `field` = replace(field, 'unwanted_char', 'wanted_char')
Problems are solved in seconds… very help me.