在所有数据库mysql中用另一个字符串替换字符串

I have a database which I want to export to CSV File.

In one of the fields ringPics, I have values as

"abc.png,zxc.png"

Now when I export to CSV it mix up columns.

Since the database is very big , i can't replace , manually.

I want to do something like this replace , with /\

What changes need to be done with below query

UPDATE `rings` SET `ringPicDir`= REPLACE("ringPicDir", ',', '/\')

try this

 UPDATE `rings` SET `ringPicDir`= REPLACE( ringPicDir, ',', '/\')
                                         ^^^---no quotes here , you can use backticks also

or this

UPDATE `rings` SET `ringPicDir` = if (ringPicDir Like '%,%' ,  REPLACE( ringPicDir, ',', '/\'), ringPicDir)