在Oracle Database 21c 十大新特性一览 - New Features一文中,我列举了自 20c 开始的十大新特性,在本文中,我将再次遴选10个小特性,与读者分享,相应的,我将本文命名为:Oracle Database 21c 十小新特性一览。 1. In-Memory 基础级支持 Oracle In-Memory 通过列式存储,将行列融于RDBMS一体,从而加速OLTP和OLAP混合...
Oracle Database 23ai: AI Made Simple for Enterprise (7:11) Announcing Oracle DatabaseWorld: Multicloud AI Edition Join us at the free in-person event in New York City on May 7, or virtually on May 8, to discover how you can advance your AI and multicloud strategies with Oracle’s la...
Oracle Database 23ai: AI Made Simple for Enterprise (7:11) Announcing Oracle DatabaseWorld: Multicloud AI Edition Join us at the free in-person event in New York City on May 7, or virtually on May 8, to discover how you can advance your AI and multicloud strategies with Oracle’s la...
Oracle Database 23ai: AI Made Simple for Enterprise (7:11) Announcing Oracle DatabaseWorld: Multicloud AI Edition Join us at the free in-person event in New York City on May 7, or virtually on May 8, to discover how you can advance your AI and multicloud strategies with Oracle’s la...
Oracle Database SQL Language Referencefor more information about data types Oracle Built-In Data Types This section describes the kinds of Oracle built-in data types. character_datatypes { CHAR [ (size [ BYTE | CHAR ]) ] | VARCHAR2 (size [ BYTE | CHAR ]) | NCHAR [ (size) ] | NVARC...
通过使用 Active Data Guard (ADG) 技术,Oracle Database 23ai 可判断高速缓存是否与主实例中的最新更改一致,并在高速缓存中缺少数据时检索数据。了解有关 True Cache 的更多信息 SQL 增强功能:Oracle Database 23ai 包含了 Application Usage Domains 等新功能,支持开发人员定义列表示的类别,例如电子邮件、信用卡...
最终,在 Oracle Database 23c 中,布尔数据类型被支持: 5. 基于别名的GROUP BY 终于,我们不再需要在 Group By 中重复长长的表达式,现在支持基于别名、位置的 GROUP BY,这大大简化了SQL文本和编写,毕竟 Group by 如此常用、无处不在: 6. Javascript 存储过程 ...
oracle之type、database_link、synonym --type用法 /** 多行多列--动态游标(ref cursor) 多行单列--表(table) 单行多列--记录(record) 自定义类型--对象(object) %rowtype -->与某一行的数据类型一致 %type -->与某个字段的数据类型一致 **/...
In 18c we've finished off the implementation. So they support almost all thedata types in Oracle Database. But like JSON_table, these can be tricky to work with. Converting a row to a JSON object is tedious if you have many columns. ...
Database In-Memoryオプションが必要。 属性クラスタリング (注意1) N N Y ゾーン・マップ (注意1) N N Y PartitioningオプションおよびExadataまたはSuperclusterが必要。 セキュリティ Oracle Advanced Security N N Y 追加費用オプション Oracle Database Vault N N Y 追加費用オ...