ALTER TABLE PreRun_TechnologySysPiping ALTER Column NameSpecifications varchar(max) null
ALTER TABLE PreRun_TechnologySysPiping ALTER Column Materials varchar(max) null
GO

--删除工作包设置中的编码
ALTER TABLE PreRun_WorkPackage DROP COLUMN WorkPackCode
GO
--清除子系统工作包管理表
truncate table PreRun_SubSysWorkPackage
GO
--子系统工作包管理添加系统主键
alter table PreRun_SubSysWorkPackage add SystemId varchar(50) null
GO