如果把第二高,更新为第N高的薪水 CREATEFUNCTIONgetNthHighestSalary(NINT)RETURNSINTBEGINSETN=N-1;IFN<0THENRETURNNULL;ELSERETURN( # Write your MySQL query statement below.SELECTIFNULL( (SELECTDISTINCTSalaryFROMEmployeeORDERBYSalaryDESCLIMIT N,1),NULL)ASgetNthHighestSalary );ENDIF;END...