What is the difference between nvl and coalesce?
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I have a table name Table1 which contain columns Cust_no, car_model, country, salesamt. The records are 101, Fiat, India, 12345 2nd record is 102, Tata, USA, 98743 3rd record is 101, indica, India, 65342 4th record is 103, Toyota, UK, 64522 5th record is 103, Maruti, USA, 98632 and so on..... Now my question is write sql query which will give me detail about the sum of sales amount in perticular country
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