参考手册SQL 参考视图版本:Latest-4.1视图 📄️ ALTER VIEWALTER VIEW modifies the definition of a view.📄️ CREATE VIEWCREATE VIEW creates a logical view.📄️ DROP VIEWDROP VIEW is used to drop a logical view.📄️ SHOW CREATE VIEWReturns the CREATE statement that was used to create a given view.