USE [EnVisage]
GO

if exists (select * from sys.all_columns where name like 'PerformanceGreenThreshold' and object_id = OBJECT_ID('Project'))
begin
 alter table [Project] 
 drop column PerformanceGreenThreshold
end

if exists (select * from sys.all_columns where name like 'PerformanceGreenThreshold' and object_id = OBJECT_ID('Type'))
begin
 alter table [Type] 
 drop column PerformanceGreenThreshold
end