find distinct records from two table

Question

Table Product

PID(PK)Name

1Mobile

2Laptop

3Fashion

Table Coupons

IDPIDCity

12Bangalore

23Pune

3 2Mumbai

41Bangalore

52Mumbai

I want to select distinct City name records joining two tables

(if i have five different city then its one one record from each city).

Pl'z suggest me, how can i fetch this records.

I trired using distinct keyword to fetch records but i am unable to find desire output....