Regular Expression Usage
Regular expression can be used in column validation to validate and restrict user input. Eg. matching emails from specific domains, matching numbers within a specific range, matching a word or a phrase in a list etc...
Your regex should start with ^ and end with $ and match the whole input if it's valid.
Regular Expression Guides
Regular Expression Examples
These examples can be copied and pasted into your UseCSV Column Regular Expression Validation settings.
|Description||Match any email address from mydomain.com|
|Description||Match word or phrase in a list: cat | dog | hamster | goldfish|