USE [EnVisage]
GO

/* Scenario table */
IF EXISTS(SELECT * FROM sys.columns 
            WHERE Name = N'OccurrenceType' AND Object_ID = Object_ID(N'Holiday'))
BEGIN
ALTER table Holiday DROP COLUMN OccurrenceType
end
go

IF EXISTS(SELECT * FROM sys.columns 
            WHERE Name = N'OccurrenceWeekDay' AND Object_ID = Object_ID(N'Holiday'))
BEGIN
ALTER table Holiday DROP COLUMN OccurrenceWeekDay
end
go

IF EXISTS(SELECT * FROM sys.columns 
            WHERE Name = N'OccurrenceMonthDay' AND Object_ID = Object_ID(N'Holiday'))
BEGIN
ALTER table Holiday DROP COLUMN OccurrenceMonthDay
end
go

IF EXISTS(SELECT * FROM sys.columns 
            WHERE Name = N'OccurrenceMonth' AND Object_ID = Object_ID(N'Holiday'))
BEGIN
ALTER table Holiday DROP COLUMN OccurrenceMonth
end
go

IF EXISTS(SELECT * FROM sys.columns 
            WHERE Name = N'NonWorkingWeek' AND Object_ID = Object_ID(N'Holiday'))
BEGIN
ALTER table Holiday DROP COLUMN NonWorkingWeek
end
go

ALTER VIEW [dbo].[VW_HolidayGroupItems] AS
SELECT ROW_NUMBER () 
    OVER (PARTITION BY HolidayGroupId ORDER BY EffectiveChangeDate) AS RN, *
FROM Holiday
GO