将上述步骤整合在一起,你可以得到以下 SQL 代码: -- 创建一个名为 Employees 的表CREATETABLEEmployees(EmployeeIDINTPRIMARYKEY,FirstName NVARCHAR(50),LastName NVARCHAR(50),JoiningDateDATE);-- 为 JoiningDate 列添加默认约束,默认值为当前日期ALTERTABLEEmployeesADDCONSTRAINTDF_JoiningDateDEFAULTGETDATE()FORJoi...
In this blog, I’m explaining the default constraint in sql server and how to create it. Defaults are the objects that can be bound to one or more columns or user defined data type, making it possible to define them once and use them repeatedly. Defaults specify a value to add to a ...
SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO CREATE TABLE [dbo].[Departments_Category_Registration]( [CategoryID] [int] IDENTITY(1250000,1) NOT NULL, [DepartmentID] [int] NULL, [UniqueId] [uniqueidentifier] NULL, [IsEnabled] [bit] NOT NULL, CONSTRAINT [PK_Departments_Category_Registr...
The visibility of the metadata in catalog views is limited to securables that a user either owns, or on which the user was granted some permission. For more information, see Metadata Visibility Configuration. Examples The following example returns the definition of the DEFAULT constraint that...
DefaultConstraint 事件DefaultConstraint 型別公開下列成員。 事件 展開表格 名稱描述 PropertyChanged (繼承自 SqlSmoObject。) PropertyMetadataChanged (繼承自 SqlSmoObject。) 頂端 請參閱 參考 DefaultConstraint類別 Microsoft.SqlServer.Management.Smo 命名空間 ...
Msg 142, Level 1, State 14 Msg 1750, Level 16, State 0,LineNumber Could not create constraint or index. See previous errors. More information The fix for this issue is included inCumulative Update 2...
ALTER TABLE stu ADD CONSTRAINT DF_class DEFAULT('班级不详')提示是:“约束 'TABLE' 的定义中有语法错误。” 答案 ALTER TABLE stu ADD CONSTRAINT DF_class DEFAULT('班级不详') for 添加默认值的字段名相关推荐 1sql server 2008语句,提示有错误为什么?ALTER TABLE stu ADD CONSTRAINT DF_class DEFAULT('...
In general, when you don't name a default constraint, SQL Server will assign one. In the first example, SQL Server assigned DF__Customers__cust___151B244E as the default constraint name for cust_name, not terribly elegant. Bound Defaults是那种独立的default constraint,创建一次,多次绑定到不...
In this SQL tutorial, we’ll demonstrate examples for the types of constraints that can be created in Microsoft SQL Server. The T-SQL constraint code can be copied, pasted, and modified for your needs. Not Null Constraint Check Constraint ...
Learn more about the Microsoft.SqlServer.Management.Smo.DefaultConstraint.CreateDate in the Microsoft.SqlServer.Management.Smo namespace.