Need SQL script that deletes all values from a column and replaces them with unique random characters, numbers and symbols.

Need a SQL script that deletes all values from the password column values and replaces them with unique random characters, numbers and symbols that are at least 8 characters in length. For example: IF the value is: Yellow 20, then change it to something random like: RkW2587! Some existing passwords are the same for several users so I need the passwords to all be different. I need this by 8AM pacific time. (0800) Do this correctly and I will give you another project, which involves sending the new passwords to the users. See attached file.