Replace a comma with a dot in a table

Hello, me again.

I am extracting a value from an excel but it comes with a comma separator, can anybody advise how i can write the SQL or any other means that can replace that with a dot instead? Number looks like this for example: 23,422

Thanks in advance!

In your extract step add a Converter → Number Handling → Extract  Number.
Add an additional Converter if you need a specific number format.