如何用SQL語句查詢視圖的定義
create view Dep_ MSalary asselect 部門名稱,salary.月份,max(sum(salary.工資)) 最高工資,min(sum(salary.工資)) 最低工資from Employee,Departments,Salarywhere Employee.員工ID = Salary.員工ID and Employee.部門ID = Departments.部門IDgroup by 部門名稱 ,salary.月份如果需要限定 月份,則為:create view Dep_ MSalary asselect 部門名稱,max(sum(salary.工資)) 最高工資,min(sum(salary.工資)) 最低工資from Employee,Departments,Salarywhere Employee.員工ID = Salary.員工ID and Employee.部門ID = Departments.部門IDand salary.月份 = xxxgroup by 部門名稱。
轉載請注明出處華閱文章網 » 查詢視圖的sql語句