Basic operation of view

Simplify the code , Encapsulate him , Then it can be called in the whole database

create view view_name
as
select  Field name ,job from  Table name ;

// Modify the view 
alter view  View name  as select sentence 
// Update the view 
update,delete,insert Use these statements （ Update can only use these statements ）

// rename 
rename table view_name to new_view_name