CREATE TRIGGER [Sales].[uSalesOrderHeader] ON [Sales].[SalesOrderHeader] 
AFTER UPDATE NOT FOR REPLICATION AS 

BEGIN
    DECLARE @Count int;

    SET @Count = @@ROWCOUNT;
    IF @Count = 0 
        RETURN;

    SET NOCOUNT ON;

    BEGIN TRY
        -- Update RevisionNumber for modification of any field EXCEPT the Status.
        IF NOT UPDATE([Status])
        BEGIN
            UPDATE [Sales].[SalesOrderHeader]
            SET [Sales].[SalesOrderHeader].[RevisionNumber] = 
                [Sales].[SalesOrderHeader].[RevisionNumber] + 1
            WHERE [Sales].[SalesOrderHeader].[SalesOrderID] IN 
                (SELECT inserted.[SalesOrderID] FROM inserted);
        END;

        -- Update the SalesPerson SalesYTD when SubTotal is updated
        IF UPDATE([SubTotal])
        BEGIN
            DECLARE @StartDate datetime,
                    @EndDate datetime

            SET @StartDate = [dbo].[ufnGetAccountingStartDate]();
            SET @EndDate = [dbo].[ufnGetAccountingEndDate]();

            UPDATE [Sales].[SalesPerson]
            SET [Sales].[SalesPerson].[SalesYTD] = 
                (SELECT SUM([Sales].[SalesOrderHeader].[SubTotal])
                FROM [Sales].[SalesOrderHeader] 
                WHERE [Sales].[SalesPerson].[BusinessEntityID] = [Sales].[SalesOrderHeader].[SalesPersonID]
                    AND ([Sales].[SalesOrderHeader].[Status] = 5) -- Shipped
                    AND [Sales].[SalesOrderHeader].[OrderDate] BETWEEN @StartDate AND @EndDate)
            WHERE [Sales].[SalesPerson].[BusinessEntityID] 
                IN (SELECT DISTINCT inserted.[SalesPersonID] FROM inserted 
                    WHERE inserted.[OrderDate] BETWEEN @StartDate AND @EndDate);

            -- Update the SalesTerritory SalesYTD when SubTotal is updated
            UPDATE [Sales].[SalesTerritory]
            SET [Sales].[SalesTerritory].[SalesYTD] = 
                (SELECT SUM([Sales].[SalesOrderHeader].[SubTotal])
                FROM [Sales].[SalesOrderHeader] 
                WHERE [Sales].[SalesTerritory].[TerritoryID] = [Sales].[SalesOrderHeader].[TerritoryID]
                    AND ([Sales].[SalesOrderHeader].[Status] = 5) -- Shipped
                    AND [Sales].[SalesOrderHeader].[OrderDate] BETWEEN @StartDate AND @EndDate)
            WHERE [Sales].[SalesTerritory].[TerritoryID] 
                IN (SELECT DISTINCT inserted.[TerritoryID] FROM inserted 
                    WHERE inserted.[OrderDate] BETWEEN @StartDate AND @EndDate);
        END;
    END TRY
    BEGIN CATCH
        EXECUTE [dbo].[uspPrintError];

        -- Rollback any active or uncommittable transactions before
        -- inserting information in the ErrorLog
        IF @@TRANCOUNT > 0
        BEGIN
            ROLLBACK TRANSACTION;
        END

        EXECUTE [dbo].[uspLogError];
    END CATCH;
END;