text: ---- =============================================
  -- 使用刚创建的数据库
  -- =============================================
  use noveltysearch
  go
  
  -- 
  alter table t_subject_class add alias_name4 varchar(150)   null;
  alter table t_subject_class add alias_name5 varchar(150)   null;
  alter table t_subject_class add alias_name6 varchar(150)   null;
  
  alter table t_subject_class add alias_ename6 varchar(150)   null;
  alter table t_subject_class add alias_ename7 varchar(150)   null;
  alter table t_subject_class add alias_ename8 varchar(150)   null;
  alter table t_subject_class add alias_ename9 varchar(150)   null;
  
  alter table t_subject_class add retain3 varchar(150)   null;
  
  alter table t_contract add taxpayer_no varchar(50) null;
  
  
  
  