[POWER QUERY] How to change a text format

Hey everyone!

I have a challenge here in order to organize some discount code used in our orders.

There is a specific indication code, that when it used in a order, it actually shows the field like this:

ALE32H-99999

ALE32H is the actully indication code from the person that had gave the code to the person that ordered.

And 99999 is the order ID from this order.

What I need is to reduce this field to show only the indication code, so I can create a count of how many people this indication code has brought.

Since this date comes from MySQL, I thought it will be easy to transform directly in the Power Query.

What you guys think?

Does anyone know how to crack this?

FYI: the table shows like this:

LINE > Order ID, Discount Code

Thank you very much in advance