Using GROUP BY and HAVING
I tested , "USING" is OK.
@ParinSanghavi Nice SQL
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your thinking is special.
only beats 14% now, with inner join can beats 25%
because the sql string will be compiled from the end.
select B.Id from Weather A,Weather B
where A.Temperature < B.Temperature
Mysql的datediff 函数和sql server不同，DATEDIFF() 函数返回两个日期之间的天数。
because you used the same table ,the way to "Minus" must select different table.
@sqlworld1 your solution ended up deleting all rows where email have dups. you need to preserve one row from each email, with a minimum id number.
@hiraksarkar You need to sort the table first and then rank it.
Because your outcome is Customers.Id = Orders.CustomerId;
However the request is that Customers.Id is not in Orders.CustomerId
you can not use Id to decide one day is the previous day of another
but you can use Date
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