SqlServer 给表一次添加多个字段

alter table tableName add
  MaleCount varchar(50) null,
  FemaleCount varchar(50) null,
  SubadultCount varchar(50) null,
  LarvaeCount varchar(50) null,
  TraceType varchar(50) null,
  MountainArea varchar(50) null,
  BehaviourType varchar(50) null,
  Area varchar(50) null,
  Phenology varchar(50) null;