ALTER TABLE [dbo].[SitePerson_Checking] DROP CONSTRAINT [FK_SitePerson_Checking_WBS_UnitWork]
GO

alter table [dbo].[SitePerson_Checking] alter column WorkAreaId nvarchar(max)
go
alter table [dbo].[SitePerson_Checking] alter column IdentityCard nvarchar(50)
go
alter table [dbo].[SitePerson_Checking] alter column Address nvarchar(2000)
go
alter table [dbo].[SitePerson_Checking] alter column WorkAreaName nvarchar(max)
go