Ho la seguente:Come posso eliminare una tabella se esiste un vincolo di chiave esterna in SQL Server?
DROP TABLE [dbo].[ExtraUserInformation];
DROP TABLE [dbo].[UserProfile];
DROP TABLE [dbo].[webpages_Membership];
DROP TABLE [dbo].[webpages_OAuthMembership];
DROP TABLE [dbo].[webpages_Roles];
DROP TABLE [dbo].[webpages_UsersInRoles];
CREATE TABLE [dbo].[ExtraUserInformation] (
[Id] INT IDENTITY (1, 1) NOT NULL,
[UserId] INT NOT NULL,
[FullName] NVARCHAR (MAX) NULL,
[Link] NVARCHAR (MAX) NULL,
[Verified] BIT NULL,
CONSTRAINT [PK_dbo.ExtraUserInformation] PRIMARY KEY CLUSTERED ([Id] ASC)
);
CREATE TABLE [dbo].[webpages_UsersInRoles] (
[UserId] INT NOT NULL,
[RoleId] INT NOT NULL,
PRIMARY KEY CLUSTERED ([UserId] ASC, [RoleId] ASC),
CONSTRAINT [fk_UserId] FOREIGN KEY ([UserId]) REFERENCES [dbo].[UserProfile] ([UserId]),
CONSTRAINT [fk_RoleId] FOREIGN KEY ([RoleId]) REFERENCES [dbo].[webpages_Roles] ([RoleId])
);
tuttavia questo è guasto con un messaggio che dice:
Msg 3726, Level 16, State 1, Line 6
Could not drop object 'dbo.UserProfile' because it is referenced by a FOREIGN KEY constraint.
Msg 3726, Level 16, State 1, Line 9
Could not drop object 'dbo.webpages_Roles' because it is referenced by a FOREIGN KEY constraint.
Msg 2714, Level 16, State 6, Line 27
There is already an object named 'UserProfile' in the database.
Checking identity information: current identity value 'NULL', current column value 'NULL'.
DBCC execution completed. If DBCC printed error messages, contact your system administrator.
Come posso eliminare una tabella in queste circostanze?
riferimenti goccia primo – Sergio
Check out questa domanda: http://stackoverflow.com/questions/1776079/sql-drop-table-foreign-key-constraint Questa è un'attività SQL Server comune – MPH
devi DROP CONSTRAINS –