Hi Folks -
I am looking for a way to validate text strings against just this list of values: " abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789". Any characters outside of this list would indicate unwanted characters, either by raising an error or somehow indicating unwanted characters such as : (&,%,$,-,!) and so on.
I seek to create a method for end users to replicate the validation in Excel that I have created in Oracle and MS-Access.
Any thoughts about how to approach this challenge?
Thanking all of you in advance,