select isnull(salary,null) as SecondHighestSalary from(select distinct salary,row_number()over(order by salary desc) rn from Employee ) temp where rn=2;

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转载自www.cnblogs.com/wsq-blog/p/10952468.html

select isnull(salary,null) as SecondHighestSalary from(select distinct salary,row_number()over(order by salary desc) rn from Employee ) temp where rn=2;

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