C# Bulk Insert SQLBulkCopy - Update if Exists [duplicate] - c#-4.0

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Closed 10 years ago.
Possible Duplicate:
Any way to SQLBulkCopy “insert or update if exists”?
I am using SQLBulkCopy to insert Bulk records
How can I perform on update (rather than an insert) on records that already exist? Is this possible with SQLBulkCopy?
This is my code for SQLBulkCopy
using (var bulkCopy = new SqlBulkCopy(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString, SqlBulkCopyOptions.KeepNulls & SqlBulkCopyOptions.KeepIdentity))
{
bulkCopy.BatchSize = CustomerList.Count;
bulkCopy.DestinationTableName = "dbo.tCustomers";
bulkCopy.ColumnMappings.Clear();
bulkCopy.ColumnMappings.Add("CustomerID", "CustomerID");
bulkCopy.ColumnMappings.Add("FirstName", "FirstName");
bulkCopy.ColumnMappings.Add("LastName", "LastName");
bulkCopy.ColumnMappings.Add("Address1", "Address1");
bulkCopy.ColumnMappings.Add("Address2", "Address2");
bulkCopy.WriteToServer(CustomerList);
}
Application Details
ASP.net MVC 3.0 Razor view Engine
SQL Server 2008

Answer 1

Thanks to #pst
with his suggestions this is how I implemented, if anyone has to implement similar.
Bulk Insert in to permanent Temp Table
using (var bulkCopy = new SqlBulkCopy(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString, SqlBulkCopyOptions.KeepNulls & SqlBulkCopyOptions.KeepIdentity))
{
bulkCopy.BatchSize = CustomerList.Count;
bulkCopy.DestinationTableName = "dbo.tPermanentTempTable";
bulkCopy.ColumnMappings.Clear();
bulkCopy.ColumnMappings.Add("CustomerID", "CustomerID");
bulkCopy.ColumnMappings.Add("FirstName", "FirstName");
bulkCopy.ColumnMappings.Add("LastName", "LastName");
bulkCopy.ColumnMappings.Add("Address1", "Address1");
bulkCopy.ColumnMappings.Add("Address2", "Address2");
bulkCopy.WriteToServer(CustomerList);
}
Then call a stored Procedure to Merge the temp table with actual table
using (Entities context = new Entities())
{
System.Nullable<int> iReturnValue = context.usp_Customer_BulkUploadMerge(customerid, locationID).SingleOrDefault();
if (iReturnValue.HasValue)
{
// return was successful!
}
}
This is how I used Merge in my Stored Procedure
ALTER PROCEDURE usp_Customer_BulkUploadMerge
(
#CustomerID INT ,
#locationID INT
)
AS
BEGIN
DECLARE #retValue INT
BEGIN TRY
IF OBJECT_ID('tCustomers') IS NOT NULL
BEGIN
BEGIN TRANSACTION MergPatientsTable
SET NOCOUNT ON;
MERGE dbo.tCustomers AS target
USING
( SELECT PU.CustomerID ,
PU.LocationID ,
PU.FirstName ,
PU.LastName ,
PU.MiddleInitial ,
PU.Gender ,
PU.DOB
FROM dbo.tPermanentTempTable PU
WHERE PU.CustomerID = #CustomerID
AND PU.LocationID = #locationID
GROUP BY PU.CustomerID ,
PU.LocationID ,
PU.FirstName ,
PU.LastName ,
PU.MiddleInitial ,
PU.Gender ,
PU.DOB
) AS source ( CustomerID, LocationID, FirstName,
LastName, MiddleInitial, Gender, DOB )
ON ( LOWER(target.FirstName) = LOWER(source.FirstName)
AND LOWER(target.LastName) = LOWER(source.LastName)
AND target.DOB = source.DOB
)
WHEN MATCHED
THEN
UPDATE SET
MiddleInitial = source.MiddleInitial ,
Gender = source.Gender,
LastActive = GETDATE()
WHEN NOT MATCHED
THEN
INSERT (
CustomerID ,
LocationID ,
FirstName ,
LastName ,
MiddleInitial ,
Gender ,
DOB ,
DateEntered ,
LastActive
) VALUES
( source.CustomerID ,
source.LocationID ,
source.FirstName ,
source.LastName ,
source.MiddleInitial ,
source.Gender ,
source.DOB ,
GETDATE() ,
NULL
);
DELETE PU
FROM dbo.tPermanentTempTable PU
WHERE PU.CustomerID = #CustomerID
AND PU.LocationID = #locationID
COMMIT TRANSACTION MergPatientsTable
SET #retValue = 1
SELECT #retValue
END
ELSE
BEGIN
SET #retValue = -1
SELECT #retValue
END
END TRY
BEGIN CATCH
ROLLBACK TRANSACTION MergPatientsTable
DECLARE #ErrorMsg VARCHAR(MAX);
DECLARE #ErrorSeverity INT;
DECLARE #ErrorState INT;
SET #ErrorMsg = ERROR_MESSAGE();
SET #ErrorSeverity = ERROR_SEVERITY();
SET #ErrorState = ERROR_STATE();
SET #retValue = 0
SELECT #retValue
-- SELECT 0 AS isSuccess
END CATCH
END