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'
