A view is a virtual table whose contents are defined by a query.
1. Basic use
create view 视图名 as select语句;//创建视图语法
Whether modifying the view, or the base table data will affect each other
delete view
A view is a virtual table whose contents are defined by a query.
create view 视图名 as select语句;//创建视图语法
Whether modifying the view, or the base table data will affect each other
delete view