CREATE unique INDEX 索引名 ON 表名 (列名) TABLESPACE 表空间名; 创建组合索引: CREATE INDEX 索引名 ON 表名 (列名1,列名2) TABLESPACE 表空间名; 创建反向键索引: CREATE INDEX 索引名 ON 表名 (列名) reverse TABLESPACE 表空间名; 查看文章 oracle 查看索引类别以及查看索引字段被引用的字段方法2008年0...
alter table tabname add constraint con_fk foreign key(eid) references employees(employee_id) ;on delete cascade |on delete set null,on delete cascade表示删除主键,参照该主键的外键表的数据也被删除了;on delete set null表示删除主键,参照该主键的外键表的数据被设置成null(前提是该字段允许为null)。 s...
Oracle 19c,此功能仅限于企业版。通过设置初始化参数“_exadata_feature_on=true”进行测试。 代码语言:javascript 代码运行次数:0 复制 Cloud Studio代码运行 exportORACLE_SID=cdb1exportORAENV_ASK=NO.oraenvexportORAENV_ASK=YESsqlplus/assysdba<<EOFalter systemset"_exadata_feature_on"=truescope=spfile;shutdo...
“I’m excited to see the more folks from the wider Java Community working together with Oracle on JavaFX. This release proves there is a great future for client-side Java development. As an OpenJDK Project , OpenJFX shares much of its principles and infrastructure, leading to a high-...
On the other hand, while rebuilding the index without online option, Oracle will grab the index in X-mode and rebuild a new index segment by selecting the data from the old index. So here we are not allowing any DML on the table hence there is no journal table involved and it is doin...
Oracle database, 1-5, 1-8, 29-6 password, 26-14 administrator privileges, 5-3 See also control files, datafiles, redo log files fine-grained access control, 27-23 FIPS standard, 15-6 fixed views, 2-7 flagging of nonstandard features, 15-6 foreign key constraints changes...
Oracle database, 1-5, 1-8, 29-6 password, 26-14 administrator privileges, 5-3 See also control files, datafiles, redo log files fine-grained access control, 27-23 FIPS standard, 15-6 fixed views, 2-7 flagging of nonstandard features, 15-6 foreign key constraints changes...
Complete explain information for Oracle Fix a dbojects parsing bug when there are multiple constraints with one name on one table. Fix a bug in RuleOrCond4SelectRewrite. Support named windown function in SQL Parser. Fix a bug about table correlation with column alias. Version 2024.1.13 ...
02 - oracle-cloud-infrastructure-compute/ 22-Aug-2021 02:02 - oracle-cloud-infrastructure-compute-classic/ 22-Aug-2021 02:03 - oracle-cloud-infrastructure-devops/ 22-Aug-2021 02:03 - origo-issue-notifier/ 22-Aug-2021 02:03 - osf-builder-suite-for-sfcc-credentials/ 22-Aug-2021 02:03 ...
with Oracle,MySQL对标准SQL的扩展,GROUP BY(聚合)函数,DESCRIBE语法(获取有关列的信息) with PostgreSQL,MySQL对标准SQL的扩展 with standard SQL,MySQL标准的兼容性 with Sybase,USE语法 compiler C++ gcc,典型配置选项 compiling on Windows,在Windows下编译MySQL客户端 optimizing,系统因素和启动参数的调节 problems,...