Error:    IDispatch error #3159
Source:    Microsoft OLE DB Provider for ODBC Drivers

[Microsoft][ODBC SQL Server Driver][SQL Server]The conversion of the varchar value '4294967295' overflowed an int column. Maximum integer value exceeded.

SELECT * FROM [Patient]  
WHERE [PatientID] = '999-ск'  
AND [PatientsName] = N'Иванов^ Иван^ Владимирович'

USE [eFilmWorkstation]

IF  EXISTS (SELECT * FROM sys.indexes WHERE object_id = OBJECT_ID(N'[dbo].[Patient]') AND name = N'IX_PatientID')
DROP INDEX [IX_PatientID] ON [dbo].[Patient] WITH ( ONLINE = OFF )

--ALTER TABLE [dbo].[Patient] ALTER COLUMN [PatientID] [nvarchar](255) NULL;
ALTER TABLE [dbo].[Patient] ALTER COLUMN [PatientID] [varchar](255) NULL;

CREATE NONCLUSTERED INDEX [IX_PatientID] ON [dbo].[Patient]  
(
  [PatientID] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF
, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF
, DROP_EXISTING = OFF, ONLINE = OFF
, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]