Retrieve data from ps_customer

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HI folks,

I created 2 new custom fields in the registration page, and The value of the two fields is added to the ps_customer table.

 

I need later to retrieve the value of these two fields in order to show them in the product cart page. How could I retrieve the two values?!  I imagine I need to make a call to DB or something like that. But in which file I need to implement the code?!

 

Thanks!