if not exists(select 1 from syscolumns where id = object_id('PG_CRED_FORN') and name = 'STS_CRED_FORN')
begin 
ALTER TABLE dbo.PG_CRED_FORN ADD
	STS_CRED_FORN int NOT NULL CONSTRAINT DF_PG_CRED_FORN_STS_CRED_FORN DEFAULT 0
end