CASCADED is treated as default if neither keyword is given. WITH LOCAL CHECK OPTION restricts the CHECK OPTION to only the view being defined, while WITH CASCADED CHECK OPTION checks all underlying views as well. There are two keywords that can be applied. The WITH CHECK OPTION clause is used to prevent updates or inserts to views unless the WHERE clause in the SELECT statement is true. MariaDB stores an IS_UPDATABLE flag with each view, so it is always possible to see if MariaDB considers a view updatable (although not necessarily insertable) by querying the IS_UPDATABLE column in the INFORMATION_SCHEMA.VIEWS table. The following are examples of derived columns the view columns are all simple columns, and not derived in any way.no base table columns are present in view select list more than once.the view contains all base table columns that don't have default values.
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