ALTER TABLE Person.Contact ENABLE CHANGE_TRACKING WITH (TRACK_COLUMNS_UPDATED = ON) 你还可以通过使用数据库属性(“变更跟踪”页)对话框,在 SQL Server Management Studio 中对表启用更改跟踪。当TRACK_COLUMNS_UPDATED 选项设为 ON 时,SQL Server 数据库会将有关哪些列已更新的额外信息存储到内部更改跟踪表中...
ENABLE CHANGE_TRACKING --开启更改跟踪功能 WITH (TRACK_COLUMNS_UPDATED = ON) --开启跟踪已更新的列 开始测试CT功能 对表做增删改操作 insert into test values('test4','four') update test set c2 = 't2' where c1 <3 delete from test where c2='test3' 上边的脚本每执行一次,都要对应执行一次下面...
1. 在库级别启用CT alterdatabaseTestCTsetchange_tracking=on( change_retention=2days, auto_cleanup=on) 2. 对要跟踪的对象启用CT altertablesometable enable change_trackinggo 3. 使用CHANGETABLE函数查看CT数据。SYS_CHANGE_VERSION是库中任何行的变改的最新版本号。 返回行的最新更改数据: SELECTt.*, ct...
使用CHANGE_TRACKING_MIN_VALID_VERSION() 來驗證上一次同步處理的版本。 使用CHANGE_TRACKING_CURRENT_VERSION() 來取得下一次可用於取得變更的版本。 使用CHANGETABLE(CHANGES ...) 來取得 Sales 資料表的變更。 使用CHANGETABLE(CHANGES ...) 來取得 SalesOrders 資料表的變更。在資料庫中進行的兩個處理序可能會...
ALTER TABLE Employee ENABLE CHANGE_TRACKING WITH (TRACK_COLUMNS_UPDATED = ON); 1. 那么现在我们开始跟踪表的修改 update employee set Phone1 ='12121212' where EmployeeID ='E001' update employee set Phone1 ='21212121' where EmployeeID ='E002' ...
enable change_tracking go 1. 2. 3. 4. 5. 3. 使用CHANGETABLE函数查看CT数据。SYS_CHANGE_VERSION是库中任何行的变改的最新版本号。 返回行的最新更改数据: SELECT t.* , ct.* FROM dbo.SomeTable t CROSS APPLY CHANGETABLE(VERSION dbo.SomeTable, (ID), (t. ID)) AS ct; ...
change_retention=2days, auto_cleanup=on) 2. 对要跟踪的对象启用CT altertablesometable enable change_trackinggo 3. 使用CHANGETABLE函数查看CT数据。SYS_CHANGE_VERSION是库中任何行的变改的最新版本号。 返回行的最新更改数据: SELECTt.*, ct.*FROMdbo.SomeTable tCROSSAPPLY CHANGETABLE(VERSION dbo.SomeTa...
SQL Server provides two features that track changes to data in a database: change data capture and change tracking. These features enable applications to determine the DML changes (insert, update, and delete operations) that were made to user tables in a database. Change data capture and ...
Open a new query window and run the following SQL as the sqladmin user to enable Change Tracking: Copy ALTERDATABASECTDemoSETCHANGE_TRACKING =ON(CHANGE_RETENTION =2DAYS, AUTO_CLEANUP =ON); GO Two things to note here. First, theCHANGE_RETENTIONparameter. This is used to tell Change Trackin...
SQL Server change tracking will not be enabled until the server is updated to enable change tracking. After you complete the Data Source Configuration Wizard, you have to add code to the application to initiate the synchronization. Note