Oracle XML DB Developer's Guidefor information onXMLTypeviews ALTER VIEWandDROP VIEWfor information on modifying a view and removing a view from the database Prerequisites To create a view in your own schema, you must have theCREATEVIEWsystem privilege. To create a view in another user's sch...
在Oracle中,使用如下语句创立视图:CREATE OR REPLACE VIEW pen_viewAS SELECT * FROM order_masterWHERE ostatus = ‘p’ WITH CHECK OPTION;当顾客试图执行如下语句:UPDATE pen_view SET ostatus = ‘d’ WHERE ostatus=’p’;下列描述对旳旳是(选一项),本题来源于2022年Or
Note: Not all SQL types support this. (e.g. can be done in Oracle and DBT, but not PostgreSQL.)To create a materialized view, add the MATERIALIZED keyword:CREATE MATERIALIZED VIEW myView AS [Query]; To refresh the view manually use the following command:REFRESH MATERIALIZED VIEW [view nam...
在Oracle中,使用以下语句创建视图: RETE OR REPLE VIEW pen_view S SELET * FROM order_master WHERE ostatus = ‘p’ WITH HEK OPTION ONSTRINT penv; 当用户试图执行以下语句: UPTE pen_view SET ostatus = ‘d’ WHERE ostatus=’p’; 下列描述正确的是( )。; Ora
在Oracle中,使用以下语句创建视图: RETE OR REPLE VIEW pen_view S SELET * FROM order_master WHERE ostatus = ‘p’ WITH HEK OPTION ONSTRINT penv; 当用户试图执行以下语句: UPTE pen_view SET ostatus = ‘d’ WHERE ostatus=’p’; 下列描述正确的是( )。 ; Or
CREATE/ALTER/DROP VIEW CREATE [OR REPLACE] [FORCE|NOFORCE] VIEW [schema.] viewname [( alias[, alias ...])] AS viewquery [WITH CHECK OPTION [CONSTRAINT constraint]] Creates a view. ALTER VIEW [ … - Selection from Oracle SQL: the Essential Reference [Boo
You can only create a view with errors by using the FORCE option of the CREATE VIEW command: CREATE FORCE VIEW AS ...; When a view is created with errors, Oracle returns a message and leaves the status of the view as INVALID. If conditions later change so that the query of an invali...
CREATE VIEW SALES _Total(VEMno,Gno,SDate,amount) AS SELECT VENno ,Gno ,SDate ,count(*) FROM SALES GROUP BY (d);CREATE VIWE (e) AS SELECT VEM.VEMno,Location ,GOODS.Gno ,Brand,Price,amount,SDate FROM VEM,GOODS,SALES_Total WHERE (f) AND (g)【问题 3】 (3分)每售出一件商品,就...
DROP VIEW RENAME TRUNCATE TABLE ALTER SYSTEM MAJOR FREEZE DML DCL DDL 功能 SQL 实践和建议 PL 参考 预留关键字(MySQL 模式) 预留关键字(Oracle 模式) 系统视图 配置项和系统变量 错误码 性能调优 性能测试 数据库代理 驱动 平台产品 组件& 工具 常见问题 版本发布记录 OceanBase 术语 下载PDF ...
[1]:https://dev.mysql.com/doc/refman/8.0/en/view-check-option.html Subject Written By Posted Is it possible to create a View with read only option in MySQL? Kulasangar Gowrisangar July 24, 2017 03:16PM Sorry, you can't reply to this topic. It has been closed....