SQL Server 给表和字段添加说明

https://www.cnblogs.com/jkqnb/p/5949611.html
1、添加表说明
 EXECUTE sp_addextendedproperty   N'MS_Description','表说明',N'user',N'dbo',N'table',N'表名',NULL,NULL
2、删除表说明
EXEC sp_dropextendedproperty N'MS_Description','user','dbo','table', '表名', NULL,NULL
3。添加字段说明
EXECUTE   sp_addextendedproperty   N'MS_Description','字段说明内容',N'user',N'dbo',N'table',N'表名',N'column',N'字段名'
4。删除字段说明
EXEC sp_dropextendedproperty N'MS_Description', 'user','dbo', 'table', '表名', 'column','字段名'

增加字段添加字段说明例子
alter table dbo.pmw_order add AirCost type not null default 0
EXECUTE   sp_addextendedproperty   N'MS_Description','航空成本',N'user',N'dbo',N'table',N'pmw_order',N'column',N'AirCost'