使用START WITH为第一次自动刷新时间指定一个日期时间表达式,然后通过NEXT指定自动刷新间隔的datetime表达式,计算结果必须为未来的时间。 如果省略 START WITH 值,则数据库通过评估与物化视图的创建时间相关的 NEXT 表达式来确定第一次自动刷新时间。 如果省略 NEXT 值,则数据库仅刷新物化视图一次 代码语言:javascrip
##可以通过在 view T后加上BUILD IMMEDIATE参数立刻刷新物化视图,得到数据 REFRESH 子句可以包含如下部分: [refresh [fast|complete|force] [on demand | commit] [start with date] [next date] [with {primary key|rowid}]] 2、物化视图刷新 当基表有更新后(DML),如果不是on commit类型,物化视图需要刷新后...
start with,connect by主要目的:从表中取出树状数据。可以假想成表中存成的各条数据是分别是树中的一个结点。 主要用法: select...start withinitial-conditionconnect bynocyclerecurse-conditionselect...connect byrecurse-conditionselect...start withinitial-conditionconnect bynocyclerecurse-conditionselect...connect...
WITHtransfer (start_station, stop_station, stops, path)AS( SELECTstation_name, next_station,1, line_name||station_name||'->'||line_name||next_station FROMbj_subwayWHEREstation_name='王府井' UNIONALL SELECTp.start_station, e.next_station, stops+1, p.path||'->'||e.line_name||e.nex...
Oracle Database Free Release Quick Start Experience the next generation of database innovation with Oracle Database 23ai. Designed to simplify development for AI, microservices, graph, document, spatial, and relational applications, this converged database platform offers everything you need in one po...
解决办法包括向表空间添加空间或者为索引重新设置next 参数值"。 ORA-02243 修改索引或修改物化视图的选项无效 使用了有语法错误的alter index命令。检查命令的正确性并且更正命令。 ORA-02429 不能删除用于强制使用唯一性键/主键约束的索引 试图删除用于强制使用表的主键或者唯一性键约束的索引。需要删除该约束来使索引...
ClickNext. Review Review the instance configuration and do one of the following: If you are satisfied with the configuration, clickCreate. The instance's detail page is created and its status displaysProvisioning. To track the progress of the operation andtroubleshoot errorsthat occur during instanc...
The next-generation cloud designed to run any application, faster and more securely, for less. Try OCI for free Chat with Oracle Sales What is Oracle Cloud Infrastructure? (2:15) Announcing Oracle CloudWorld 2025 At CloudWorld, October 13–16 in Las Vegas, you’ll see the latest Oracle pr...
If the parameters listed in Step 2 do not exist, add the parameters with their values, as listed in Step 3, to thelimits.conffile. 3.1.3Starting Oracle JDeveloper on Linux and UNIX Systems To start Oracle JDeveloper on Linux and UNIX, do the following: ...
# 检查日志归档是否开启 SQL> archive log list; Database log mode Archive Mode Automatic archival Enabled Archive destination USE_DB_RECOVERY_FILE_DEST Oldest online log sequence 1 Next log sequence to archive 1 Current log sequence 1 # 启用补充日志记录 SQL> ALTER DATABASE ADD SUPPLEMENTAL LOG ...