Write a Regex to extract number before '/'

Question

I don\'t want to use string split because I have numbers 1-99, and a column of string that contain \'#/#\' somewhere in the text.

How can I write a regex to extract the

Answer 1

Use a lookahead to match on the /, like this:

\d+(?=/)

You may need to escape the / if your implementation uses it as its delimiter.

Live example: https://regex101.com/r/xdT4vq/1