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For information about user auditing within views, see Section 6.3.12, “SQL-Based My SQL Account Activity Auditing”. For more information, see Section 23.5.2, “View Processing Algorithms”, as well as Section 126.96.36.199, “Optimizing Derived Tables and View References”. That is, you can use them in statements such as to update the contents of the underlying table.For a view to be updatable, there must be a one-to-one relationship between the rows in the view and the rows in the underlying table.Solution/work around:create view v2 as select * from t2 where ...;create view v1 as select * from t1 JOIN v2 USING (id) where ...(example above is an overly simplified version of what I did for demonstration puposes).Simulating Materialized View Materialized views are not updated every time they are accessed; they behave as static tables hence are much faster than normal view.
============================================================================= Package Arch Version Repository Size ============================================================================= Installing: tsclient i386 0.132-4 base 247 k Installing for dependencies: rdesktop i386 1.3.1-5 base 107 k Transaction Summary ============================================================================= Install 2 Package(s) Update 0 Package(s) Remove 0 Package(s) Total download size: 355 k Is this ok [y/N]:warning: rpmts_Hdr From Fdno: Header V3 DSA signature: NOKEY, key ID 443E1821 public key not available for tsclient-0.132-4.i386Retrieving GPG key from OS-4 Importing GPG key 0x443E1821 "Cent OS-4 Key examines your system for both the specified software, and any software which claims it as a dependency.For example: CREATE TABLE new_materialized_view SELECT * from regular_view; RENAME TABLE materialized_view = old_materialized_view, new_materialized_view = materialized_view; DROP TABLE IF EXISTS old_materialized_view; Creating a materialized view emulation as described above looks good, the only problem is that we are inheriting the lack of indexes My SQL views expose.My solution is to create a correctly indexed table according to my needs, having the exact same structure as the view, and then running something like this: LOCK TABLES materialized View WRITE; TRUNCATE materialized View; INSERT INTO materialized View SELECT * FROM regular View; UNLOCK TABLES; That way all indexes from materialized View are preserved on every "refresh".There are also certain other constructs that make a view nonupdatable.A generated column in a view is considered updatable because it is possible to assign to it.