The system versioned table creates a temporal table which maintains the history of the data. By default, the name is as MSSQL_TemporalHistoryFor_1541580530. But you can specify the name of this table in the CRE
System-Versioned Temporal Table,暂且容我管它叫版本由系统控制的临时表,它是 SQL Server 2016 中的新型用户表,用于保留完整的数据更改历史记录。 它之所以称为版本由系统控制的临时表,是因为每一行的有效期由数据库引擎管理。 每个临时表有两个显式定义的列,其中每个列都有一个datetime2数据类型。每当数据修改后,...
Subclause 5.77, "VIEW_PERIOD_USAGE view": Without Feature T180, "System-versioned tables", conforming SQL language shall not reference INFORMATION_SCHEMA.VIEW_PERIOD_USAGE. Function Identify the periods on which viewed tables defined in this catalog and owned by a given user or role ...
FILESTREAM、FileTable 與 BLOB 索引 SQL Graph 順序號碼 服務代理 空間數據 預存程式 表格 表格 管理 主鍵 外鍵 唯一約束條件和檢查約束條件 檢查約束條件 時態表 時態表 建立及管理 入門指南 創造 修改數據 查詢數據 安全 變更架構 停止系統版本管理 使用案例 一致性檢查 分區 考慮事項...
SQL Server 2016 (13.x) and later versions Azure SQL Database Azure SQL Managed Instance SQL database in Microsoft Fabric There are three ways to create a system-versioned temporal table when considering how the history table is specified: ...
To be system-versioned, according to SQL:2011, a table must have two generated columns, a period, and a special table option clause: CREATE TABLE t( x INT, start_timestamp TIMESTAMP(6) GENERATED ALWAYS AS ROW START, end_timestamp TIMESTAMP(6) GENERATED ALWAYS AS ROW END, PERIOD FOR...
Database Research & Development: How to enable System-versioned Temporal Table on existing table of SQL Server 2016. You can enable it and can keep a history of change data in additional history table.
在mariadb中,表版本化是10.3.4开始引入的,参考了SQL:2011的标准,截止本文编写,mariadb 10.3系列的最新版本为MariaDB 10.3.10 Stable,10.3.7发布第一个GA版本。如下: 所以新是有点新,具体看怎么办了。。。 TheCREATE TABLEsyntax has been extended to permit creating a system-versioned table. To be system...
终于等到你,System-Versioned表特性的引入,对于启用了该特性的表,数据的误删再也不怕了。相当于Oracle的闪回查询,可以查询任意时间点的数据。下面举个小例子: –创建表,with system versioning MySQL [(none)]> use test; Database changed MySQL [test]> drop table student; ...
Stop system-versioning if you want to perform specific maintenance operations on a temporal table or don't need a versioned table anymore. Because of this operation, you get two independent tables:Current table with a period definition History table as a regular table ...