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Example 1:
Select * from customers
Example 2:
select * from customers where Country ='uk'
Example 3:
select City,Country from customers order by city
Example 4:
select City,Country from customers order by 1
Example 5:
select distinct City,Country from customers order by 1
Example 6:
Select Count(*) from Customers where Country ='uk
Example 7:
Select sum(Quantity) from[order details] where productid = 11
Example 8:
Select productid, sum(Quantity) as sum_qty from [Order Details] group by productid