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Oracle ?????CREATE VIEW????????????????????????????????????? Oracle ??CREATE VIEW ?????????????????????
CREATE [OR REPLACE] [FORCE|NOFORCE] VIEW view_name[(alias[, alias]...)]AS subquery[WITH CHECK OPTION [CONSTRAINT constraint]] [WITH READ ONLY]
view_name????????????????????????alias?????????????????????subquery????????????????WITH CHECK OPTION????? INSERT?UPDATE ? DELETE ???????????????WITH READ ONLY???????????????OR REPLACE???????????????????????FORCE??????????NOFORCE?????????????????-- ???? `user_view` ?????? `users` ?CREATE VIEW user_view AS SELECT * FROM users;-- ???? `sales_analyst_view` ?????? `sales` ??????? `sa`CREATE VIEW sales_analyst_view AS SELECT * FROM sales WHERE department = 'SA' AS sa;
FORCE ? NOFORCE??????????NOFORCE ????????????????WITH CHECK OPTION????????????????????????WITH READ ONLY????????????????????????? Oracle CREATE VIEW ????????????????????????????????????
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