I have an idea of what I want to achieve, but have no clue what it is called in statistical analysis world, hence impossible to implement.

I have a database with unique order numbers, customer names, products etc. I would like to see the correlation between products within orders. I.e. if I pick product X, what is the likelihood that I will also choose a product Y.

I would like to know what to research to help me with this.

Thank you!

M