Check string contains numbers in T-SQL

I know this is looking very simple when we read. But, I had a requirement where I need to filter strings from string data type column in T-SQL. Means, some strings in database having numbers in them, and I need to get them out and do some processing. When I started implementing this, I had so many ideas and thought like, looping through all characters in each string and check whether it has numbers in it or not. But, this is not efficient and may be a stupid implementation. And after thought about it sometime, started reading T-SQL documentation and found a wonderful function which is already built in in T-sql. I am saved. Very happy to see that function and that is working very great.