CREATE VIEW dbo.uvw_StockingDays
AS
SELECT ItemNmbr
     , ItemDesc
     , dbo.ufn_SplitGet(USCATVLS_1, '-', 1) AS MinDays
     , dbo.ufn_SplitGet(USCATVLS_1, '-', 2) AS MaxDays
FROM IV00101
GO

CREATE TRIGGER dbo.upd_StockingDays
ON uvw_StockingDays
INSTEAD OF UPDATE AS
IF (COLUMNS_UPDATED() & 12) > 0
    UPDATE IV00101
    SET USCATVLS_1 = INSERTED.MinDays + '-' + INSERTED.MaxDays
    FROM INSERTED
    WHERE IV00101.ItemNmbr = INSERTED.ItemNmbr
GO