if not exists(select 1 from syscolumns where id = object_id('EST_TRIB_CONF_GRP_CPL') and name = 'PERC_ICMS_DIFAL_EXCESSAO')
begin
ALTER TABLE dbo.EST_TRIB_CONF_GRP_CPL ADD
	PERC_ICMS_DIFAL_EXCESSAO money NOT NULL CONSTRAINT DF_EST_TRIB_CONF_GRP_CPL_PERC_ICMS_DIFAL_EXCESSAO DEFAULT 0
end