alter table MonthEnd_Unit
  add MEU_IsImport bit null default(0)
go

EXEC sys.sp_addextendedproperty @name=N‘MS_Description‘, @value=http://www.mamicode.com/N‘是否是导入的月结‘ , @level0type=N‘SCHEMA‘,@level0name=N‘dbo‘, > go

sql server 添加字段并且赋默认值和说明