我的目标是要掩列SQL服务器2019年。
我是下一个非常简单的 引导.
我运行这种查询 AdventureWorks2014
我创建一个副本 Person.Person
:
SELECT [BusinessEntityID]
,[PersonType]
,[NameStyle]
,[Title]
,[FirstName]
,[MiddleName]
,[LastName]
,[Suffix]
,[EmailPromotion]
,[AdditionalContactInfo]
,[Demographics]
,[rowguid]
,[ModifiedDate]
INTO [Person].[PersonMasked]
FROM [AdventureWorks2014].[Person].[PersonMasked]
ORDER BY BusinessEntityID
我现在要掩列 FirstName
作是编写指导:
ALTER TABLE [AdventureWorks2014].[Person].[PersonMasked]
ALTER COLUMN FirstName NVARCHAR(10) MASKED WITH (FUNCTION = 'default()');
和我收到的错误:
Msg 8152, Level 16, State 30, Line 1
String or binary data would be truncated.
The statement has been terminated.
Completion time: 2021-11-23T15:32:43.0426983+01:00
我在哪里错了吗?
我在哪里可以找到的功能 FUNCTION = 'default()'
在短程?